Interstate 5 in California

Interstate 5
I-5 highlighted in red
Route information
Maintained by Caltrans
Length	796.77 mi[1] (1,282.28 km)
History	Completed October 12, 1979
Tourist routes	Volcanic Legacy Scenic Byway West Side Freeway from SR 152 near Santa Nella to I-580 near Tracy
NHS	Entire route
Major junctions
South end	Fed. 1 / Fed. 1D at the Mexican border in San Diego
Major intersections	SR 15 in San Diego I-8 in San Diego I-405 in Irvine I-10 / US 101 / SR 60 in Los Angeles SR 134 in Los Angeles SR 99 near Wheeler Ridge I-580 near Tracy US 50 / I-80 BL in Sacramento I-80 in Sacramento US 97 in Weed
North end	I-5 at the Oregon state line south of Ashland, OR
Location
Country	United States
State	California
Counties	San Diego, Orange, Los Angeles, Kern, Kings, Fresno, Merced, Stanislaus, San Joaquin, Sacramento, Yolo, Colusa, Glenn, Tehama, Shasta, Siskiyou
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← SR 4 → US 6

Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, running largely parallel to the Pacific Coast between the Mexican border and the Canadian border. The segment of I-5 in California runs across the length of the state from the Mexican border at the San Ysidro Port of Entry in the San Ysidro neighborhood of San Diego to the Oregon state line south of the Medford-Ashland metropolitan area. It is the longest interstate in California at 796.77 miles (1,282.28 km),^[1] and accounts for more than half of I-5's total length of 1,381.29 miles (2,222.97 km).^[2] It is also the second longest stretch of Interstate Highway (and the longest for a north-south Interstate) with a single designation within a single state after I-10 in Texas.

It is the more important and most-used of the two major north–south routes on the Pacific Coast, the other being U.S. Route 101 (US 101), which is primarily coastal. I-5 links the major California cities of San Diego, Santa Ana, Los Angeles, Stockton, Sacramento, and Redding. The San Francisco Bay Area is about 80 miles (130 km) west of the highway.

I-5 is known colloquially as "the 5" to Southern California residents and "5" to Northern California residents due to varieties in California English. I-5 also has several named portions: the John J. Montgomery Freeway, San Diego Freeway, Santa Ana Freeway, Golden State Freeway, and West Side Freeway.^[3]

I-5 southbound in San Diego toward Mexico, September 2012

I-5 looking south toward Downtown San Diego, January 2002

I-5 looking south at I-805 split

I-5 crosses the Los Angeles River twice; the northern of these is on the border between Los Angeles and Glendale

I-5 in the Newhall Pass Interchange, where it meets I-210 and SR 14 in northern Los Angeles

I-5 in the Central Valley, facing northbound near Millux, California

I-5 in the Central Valley between Tracy and Patterson

I-5 southbound approaching Weed and Mount Shasta

Hilt (exit 796) is the last exit before the Oregon state line

The entirety of Interstate 5 in California is defined in the California Streets and Highways Code as Route 5, which is defined as such in section 305:^[4]

Route 5 is from the international boundary near Tijuana to the Oregon state line via National City, San Diego, Los Angeles, the westerly side of the San Joaquin Valley, Sacramento, and Yreka; also passing near Santa Ana, Glendale, Woodland, and Red Bluff.

I-5 is part of the California Freeway and Expressway System,^[5] and is part of the National Highway System,^[6] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.^[7] The segment of I-5 from State Route 89 (SR 89) to US 97 forms part of the Volcanic Legacy Scenic Byway, an All-American Road.^[8] I-5 is also eligible to be included in the State Scenic Highway System;^[9] however, it is a scenic highway as designated by the California Department of Transportation (Caltrans) only from SR 152 to I-580.^[10]

I-5 begins at the San Ysidro Port of Entry from Mexico in the San Ysidro neighborhood of San Diego. Immediately after the border, I-805 splits off to the northeast and serves as a bypass of I-5 that avoids downtown San Diego. I-5 itself continues northwest and meets the western end of SR 905, a route that connects with the Otay Mesa border crossing. I-5 then continues northward and joins the southern end of SR 75, a highway connecting to Coronado via the Silver Strand. I-5 then enters Chula Vista, briefly leaving the San Diego city limits. It continues along the east side of San Diego Bay where it intersects with SR 54 and enters National City. From there, I-5 veers around Naval Base San Diego and reenters the city limits of San Diego. I-5 subsequently intersects with four state routes: the southern end of SR 15 (the extension of I-15), SR 75 and the Coronado Bridge, the western end of SR 94, and SR 163. In addition to serving downtown San Diego, I-5 also provides access to Balboa Park from the Pershing Drive exit.^[11][12] The portion of I-5 from the Mexican border to SR 94 at downtown San Diego is named the John J. Montgomery Freeway in honor of John J. Montgomery, a pioneer aviator who flew a glider from a location near Chula Vista in 1884.^[13]

I-5 continues northwest from downtown as the San Diego Freeway^[14] until it reaches its junction with I-8, then turns slightly to the north while passing SeaWorld and Mission Bay. Thereafter, I-5 intersects the western end of SR 52 near La Jolla before entering University City. At Nobel Drive, the San Diego LDS Temple towers over I-5.^[15] Shortly afterward, I‑5 passes through the UC San Diego campus and intersects the northern terminus of I-805 before continuing north and intersecting the western end of SR 56. At this interchange, there is a local bypass that provides the only access to Carmel Mountain Road from both directions and provides the only direct access to SR 56 going northbound.^[11]

North of the San Diego city limits, I-5 enters the city limits of Solana Beach, and then three incorporated cities to the north: Encinitas, Carlsbad and Oceanside. In Oceanside, I-5 intersects the SR 78 freeway and the SR 76 expressway and continues through Camp Pendleton. It then follows the Pacific Ocean coastline for the next 18 mi (29 km). Toward the northern end of its routing through Camp Pendleton, I-5 passes through San Onofre State Beach and near the San Onofre Nuclear Generating Station. I-5 enters Orange County at the Cristianitos Road exit.^[11]

Upon entering Orange County, I-5 goes through San Clemente. At Dana Point, I-5 turns inland while SR 1 continues along the coast. I-5 then heads due north through San Juan Capistrano and Mission Viejo, intersecting the SR 73 toll road heading northwest. I-5 continues to the El Toro Y interchange with I-405 in southeastern Irvine, splitting into lanes for regular traffic as well as for truck traffic (though autos can use these lanes as well).^[16] From that point, I-405 takes over the San Diego Freeway designation, while I-5 becomes the Santa Ana Freeway as it runs southeast to northwest.^[17]

After the El Toro Y junction, I-5 intersects SR 133, a toll road that eventually connects to SR 241. Just before the Tustin city limits, I-5 passes over SR 261, the final toll road of the Eastern Transportation Corridor, but traffic must use Jamboree Road to access the latter. I-5 then intersects SR 55 and enters Santa Ana, the county seat of Orange County. Towards the northern side of Santa Ana, I-5 intersects both SR 57 and SR 22 in what is known as the Orange Crush interchange. Following this, I-5 briefly enters the city of Orange and then traverses Anaheim, passing along the north side of Disneyland. I-5 then intersects SR 91, passes through Buena Park and crosses into Los Angeles County.^[17]

After crossing the county line, I-5 goes through several cities southeast of Los Angeles, including La Mirada, Santa Fe Springs, and Norwalk. In Downey, I-5 intersects I-605, which serves as a north–south connector route between the cities east of Los Angeles, including those in the San Gabriel Valley. I-5 then enters Commerce, passing the Citadel Outlets shopping center, and intersects I-710 before entering the large unincorporated community of East Los Angeles and later the city proper of Los Angeles. When the freeway reaches the East Los Angeles Interchange 1 mi (1.6 km) east of downtown Los Angeles, I-5 becomes the Golden State Freeway as US 101 takes over the Santa Ana Freeway designation. At this interchange, I-10, SR 60, and US 101 intersect; I-10 continues north on I-5 for about 2 mi (3.2 km) before continuing east towards San Bernardino and points farther east.^[18]

On the north side of downtown, the Golden State Freeway follows the Los Angeles River, intersects SR 110 and SR 2 and passes along the eastern side of Griffith Park. The route continues through the San Fernando Valley, intersecting the Ventura Freeway (SR 134). It briefly enters the city of Glendale and then Burbank, passing near Burbank Airport before reentering the Los Angeles city limits and intersecting the northern end of the Hollywood Freeway (SR 170). Near the city of San Fernando, I-5 intersects SR 118. Following this, I-5 intersects three routes in succession: the northern end of I-405, the western end of I-210, and the southern end of SR 14 at the Newhall Pass interchange. It then crosses the Newhall Pass through the Santa Susana Mountains into the Santa Clarita Valley. I-5's carpool lanes also have direct connectors with the carpool lanes on the SR 170 and SR 14 freeways (an additional direct connector with the HOV lanes on I-405 near Mission Hills is planned.^[19]) This allows a continuous HOV lane to run from Palmdale to North Hollywood via SR 14 to I-5 to SR 170.

I-5 continues along the western city limits of Santa Clarita and passes Six Flags Magic Mountain, intersecting SR 126 just north of there.

The Golden State Freeway then rises sharply, passing by Lake Castaic and undergoing a unique crossover resulting in a left-driving configuration for about 5 mi (8.0 km) before the highway crosses back into its standard alignment. This section is known as the Five Mile Grade. After cresting the Five Mile Grade, the freeway enters the Angeles National Forest. It passes Pyramid Lake and intersects SR 138 before crossing the Tejon Pass through the Tehachapi Mountains near the Los Angeles–Kern county line,^[18] with Path 26 power lines generally paralleling the freeway.

After entering Kern County, the freeway sharply descends for 12 mi (19 km) from 4,144 ft (1,263 m) at the Tejon Pass to 1,499 ft (457 m) at Grapevine near the southernmost point of the San Joaquin Valley, approximately 30 mi (48 km) south of Bakersfield and 5 mi (8.0 km) south of its interchange with SR 99 at Wheeler Ridge.^[20]

This stretch of I-5 through the Tejon Pass and Grapevine typically gets snow at higher elevations during the winter.^[21] Although Caltrans may require vehicles to use snow tires, snow chains, or other traction devices during and after snowstorms,^[22] the California Highway Patrol will instead usually close this segment altogether during these conditions because of the steep grade of the pass, and the amount of passenger traffic and big-rigs that generally use the corridor.^[23][24] Whenever there is such a closure, traffic must either wait for it to reopen, or endure a multi-hour detour.^[25][26] An automated gate on the freeway's median in Castaic north of Lake Hughes Road allows drivers to turn around when such closures occur.^[27]

From SR 99 at Wheeler Ridge to Woodland, I-5 is known as the West Side Freeway. I-5 parallels SR 33, skirting along the far more remote western edge of the Central Valley, and is largely removed from the major population centers such as Bakersfield, Fresno and Modesto; other state highways provide connections. I-5 still runs within the vicinity of Avenal, Coalinga, Los Banos, and a handful of other smaller cities on the western edge of the Central Valley. For most of this section, the Path 15 electrical transmission corridor follows the highway, forming an infrastructure corridor along with the California Aqueduct. After the Grapevine, I-5 crosses the California Aqueduct. This is first time out of 5 times that I-5 crosses the aqueduct.^{[citation needed]}

North of the Grapevine, I-5 intersects SR 166, SR 119 and SR 43 before meeting SR 58, a highway that continues east to Bakersfield, near the town of Buttonwillow. I-5 then intersects SR 46 before entering Kings County.^[20] From the Utica Avenue exit to I-580, I-5 parallels the eastern foothills of the Diablo Range. It crosses the California Aqueduct for the second time. In Kings County, I-5 intersects SR 41 before briefly entering the city limits of Avenal, where it intersects SR 269.^[28] In Fresno County, I-5 intersects SR 198 and SR 145 before running concurrently with SR 33 for several miles. I-5 then crosses into Merced County, intersecting SR 165, SR 152 and SR 33 near the San Luis Reservoir (where SR 152 provides a major connection to the Monterey Peninsula and the Silicon Valley), and SR 140 at the Stanislaus county line. I-5 crosses the California Aqueduct for the third time between SR 152 and SR 33 and again near Crows Landing.^[29]

In San Joaquin County, I-580 splits off from I-5 south of Tracy, providing a spur-route connection to the San Francisco Bay Area. From here, I-5 crosses the California Aqueduct for the final time and intersects SR 132, a major route to Modesto and the mountains in the east, as well as the northern end of SR 33. After passing Tracy, I-5 intersects I-205, a connector route to I-580, before intersecting the SR 120 freeway near Manteca. After passing through Lathrop, I-5 heads due north through Stockton, intersecting the SR 4 freeway that provides access to downtown Stockton. I-5 passes through the western portion of the Lodi city limits before intersecting SR 12 and entering Sacramento County.^[29]

I-5 enters the city of Elk Grove while passing along the eastern edge of the Stone Lakes National Wildlife Refuge. It then crosses into the Sacramento city limits, soon paralleling the Sacramento River before intersecting the Capital City Freeway, which carries US 50 and I-80 Business (I-80 Bus.). SR 99 merges with I-5 at this point, and the two routes pass through the western half of downtown Sacramento. Following the bridge over the American River, I-5 and SR 99 intersect the major transcontinental route of I-80. Just as I-5 leaves Sacramento, SR 99 splits off and continues north while I-5 turns due west past Sacramento International Airport and crosses the Sacramento River into Yolo County. In Woodland, the SR 113 freeway merges with I-5 before exiting to the north.^[30] The Interstate heads northwest again toward Dunnigan, where it converges with I-505.^[29]

I-5 skirts north along the western edge of the Sacramento Valley, bypassing the larger cities of the region, including Yuba City, Oroville and Chico, before reaching Red Bluff. From Dunnigan, I-5 enters Colusa County, passing through the city of Williams and intersecting SR 20. In Glenn County, I-5 intersects SR 162 in Willows and SR 32 in Orland. I-5 then crosses into Tehama County, passing through Corning before entering Red Bluff and intersecting SR 36, which connects to the northern end of SR 99. I-5 crosses the Sacramento River twice before entering Shasta County.^[29]

I-5 then enters the Shasta Cascade region, intersecting SR 273 in Anderson before passing through Redding and intersecting SR 44 and SR 299. The freeway then continues through the city of Shasta Lake, intersecting SR 151, before crossing over Shasta Lake on the Pit River Bridge and climbing up to near the foot of Mount Shasta. Just north of the bridge over Shasta Lake, I-5 also boasts the second-largest median in California after I-8's In‑Ko‑Pah grade. In Siskiyou County, I-5 passes through Dunsmuir before intersecting SR 89 near Lake Siskiyou and entering the city of Mount Shasta. North of here, US 97 intersects I-5 in Weed, providing access to Klamath Falls, Oregon. The Interstate then continues to Yreka, intersecting SR 3 and SR 96 before crossing the Klamath River and reaching the Oregon border and the Siskiyou Summit.^[29]

North of Redding, I-5 regularly gets snow at higher elevations from fall to spring. Caltrans sometimes requires vehicles to use snow tires, snow chains, or other traction devices in the mountains during and after snowstorms. Checkpoints are often set up to enforce chain restrictions on vehicles bound for icy or snowy areas. When chain restrictions are in effect, vehicles must have chains on the driving wheels, except 4WD vehicles with snow tires. Additionally, during the winter season, trucks are required to carry chains whether or not controls are in force.^[31][22]

The portion of this highway from Los Angeles to San Diego was also co-signed as US 101 until 1964–1968. The portion of this highway from Woodland to Red Bluff roughly follows old US 99W.

In California, the former western branch of Interstate 5 (the northern end of the spur into the Bay Area) connecting I-80 out of Vacaville to near Dunnigan, previously known as I-5W, was renamed I-505. Interstate 580 running between I-5 and I-80 was also once designated 5W; what is now I-5 (the stretch that runs through Sacramento) had been originally designated I-5E.

The term "Golden State Highway" was the popular name for US 99 through the length of California; the name was chosen in a public contest in 1927, but was never officially adopted.^[32] Since the construction of I-5, it has taken over the term "Golden State Freeway" from 99 south of the latter's southern terminus in Kern County.

The Golden State Freeway was proposed by the California Highway Commission in 1953. The proposal drew strong criticism from East Los Angeles residents as it would dissect and eliminate large residential and commercial areas of Boyle Heights and Hollenbeck Heights.^[33][34] The proposal also seemed to indicate a disregard for the ethnic Mexican American population of metropolitan Los Angeles. The "Boyle–Hollenbeck Anti–Golden State Freeway Committee" was formed for the purpose of blocking or rerouting the freeway. Then–Los Angeles City Council member Edward R. Roybal chaired that committee.^[33] Despite this opposition, the construction of the freeway went ahead.

When this section was completed in 1956, the newspaper The Eastside Sun wrote the freeway led to the "eradication, obliteration, razing, moving, ripping asunder, demolishing of Eastside homes."^[33][34] A widowed Edendale resident, Lomie Puckett, resisted the condemnation of one of her rental properties in August 1958 by using a rifle to threaten state workers and police.^[35] After a five-day standoff with police, the home was seized and later demolished.^[36]

The section between Orange County and Los Angeles was originally designed to have three lanes in each direction. Due to high traffic demand, the freeway started undergoing major extensions and widening in the early 1990s in Orange County. Work from SR 91 north through the Los Angeles–Orange County line was completed in 2010. Reconstruction between the county line and Interstate 605 began in 2013 and was completed by early 2023.

The original route went through the towns of Saugus and Newhall, and then crossed Newhall Pass (current route of SR 14, the Antelope Valley Freeway). In 1862, Beale's Cut was made in the construction of a toll wagon road. The 15 ft wide (4.6 m) by 60 ft deep (18 m) "slot" was dug with picks and shovels. That road would become part of the Midway Route. At the turn of the century, it was the most direct automobile route between Los Angeles and the San Joaquin Valley via the Mojave Desert and Tehachapi Pass.^[37]

In 1910, Beale's Cut was bypassed by the Newhall Tunnel. Constructed by Los Angeles County, it was too narrow for two trucks to pass each other inside. As a result, in 1939, the tunnel was completely removed (or "daylighted") when the road was widened to four lanes. Additionally, by 1930, a bypass road was constructed to avoid Newhall Pass via Weldon and Gavin canyons, which is the current route of I-5.^[37]

Both routes were eventually built as freeways. The Gavin Canyon route became I-5, and the main north–south route via the Ridge Route. The Newhall Pass route became SR 14, which is the main route between Los Angeles and the growing high desert communities of the Antelope Valley. It is also still a part of the important Midway Route, which is the primary alternate route when I-5 is closed (via SR 58 and SR 14).

The interchange has partially collapsed twice due to earthquakes: the 1971 Sylmar earthquake and the 1994 Northridge earthquake. As a result of the 1994 collapse, this interchange was renamed the "Clarence Wayne Dean Memorial Interchange", honoring a Los Angeles Police Department motorcycle officer killed when he was unable to stop in time and drove off the collapsed flyover ramp from SR 14 south to I-5 south. After both earthquakes, the collapsed portions were rebuilt and surviving portions reinforced.

In the evening of October 12, 2007, two trucks collided in the southbound tunnel that takes the truck bypass roadway under the main lanes near the Newhall Pass interchange. Fifteen trucks caught fire, killing three people and injuring ten.^[38][39]

View of the Grapevine loops looking north toward the San Joaquin Valley c. 1920, before the Ridge Route Alternate was built off to the left

A section of the 1915 Ridge Route in Lebec, abandoned when US 99 (later upgraded to I-5) was constructed over the Tejon Pass in order to make the travel straighter and safer

The Ridge Route refers to the section of highway between Castaic and Grapevine, through the Tejon Pass. The highway had its origins in the early 1910s, when a route was needed to connect Los Angeles to the Central Valley. Some believed that the only option was the route through the Mojave Desert and the Tehachapi Mountains, but a new route was discovered through the Tejon Pass. This route became known as the Ridge Route and saw almost constant planning, construction, and improvement from 1914 to 1970.^[37]

The first road was completed in 1915. It was a slow, winding, two-lane road through the mountains with a speed limit of 15 mph (24 km/h) in some places. However, the need for improvements was realized soon after it was completed. The road was paved after World War I, and several blind turns were opened up ("daylighted"). Even with these improvements in the 1920s, it became clear that a new route was needed to keep up with increasing demand.^[37]

In 1927, plans were drawn up for a "Ridge Route Alternate", named as it was planned as an addition to the existing Ridge Route and not as a replacement. It opened in 1933 as a three-lane highway through the mountains. The middle or "suicide lane" was used as an overtaking lane for cars in both directions. This route was a great improvement, faster and 9.7 mi (15.6 km) shorter than the old Ridge Route,^[37] but was not enough to satisfy demand, and a conversion to a four-lane expressway was needed. The outbreak of World War II delayed this until 1948 and the fourth lane was completed in 1952. However, just three years later, plans were begun for converting the four-lane expressway to a six-lane freeway.^[37]

The last major alteration to the Ridge Route began in the early 1960s. By then, the plan for a six-lane freeway had expanded to eight lanes. This construction project made the most changes to the route. Many of the curves that followed the mountainside were cut through. To climb the mountain on the south side of Castaic more easily, traffic lanes were reversed (southbound lanes to the east and northbound lanes to the west). To prevent head-on collisions, the two ends of the route were separated on two different mountainsides, and the section through Piru Canyon was moved to an entirely new alignment to make room for Pyramid Lake. The project was completed by 1970 and brought the Ridge Route to its current alignment.^[37]

When the Interstate Highway System was created in 1956, there was discussion about which way to route the interstate through the San Joaquin Valley (Central Valley). Two proposals were considered. One was to convert the Golden State Highway (US 99, later SR 99) into a freeway. The other was to use the proposed West Side Freeway (current Interstate 5), which had been endorsed by local groups as early as 1945.^[40] The Golden State Highway route would serve many farming communities across the San Joaquin Valley, but the West Side Freeway proposal would bypass all the Central Valley communities and thus provide a faster and more direct north–south route through the state and so was eventually chosen.^[41]

Construction began in the early 1960s. There were just three phases for the 321 mi (517 km). The first phase, completed in 1967, ran from the San Joaquin County line to Los Banos. The second phase, completed in 1972, extended the freeway south to Wheeler Ridge and connected it to SR 99. The freeway then started to see traffic, as in Stockton there were only 4 mi (6.4 km) between the West Side Freeway and the Golden State Highway. The third phase, completed in 1979, extended the freeway to Sacramento and connected it to the northern I-5.^[42]

When the second phase of the freeway opened in 1972, it was a long and lonely route with no businesses alongside. Services were not easily available as the nearest towns were miles away and generally out of sight. It was common for cars to run out of fuel.^[43] Over time the West Side Freeway (I-5) saw the development of businesses serving the needs of travelers. For years, there has still been interest in designating the Golden State Highway route as its own interstate, I-7 or I-9.^[44]

The median on I-5 between Wheeler Ridge and Tracy is wide enough to accommodate widening the West Side Freeway to six or eight lanes, should the need arise.

Interstate 5W
Location	Tracy–Dunnigan
Existed	1957–1977

I-5's more direct Los Angeles-to-Sacramento route bypasses San Francisco, San Jose, Oakland, and the rest of the San Francisco Bay Area. Original plans also called for a loop Interstate with a directional suffix, I-5W.^[41] This route now roughly corresponds to I-580 from I-5 south of Tracy to Oakland, I-80 from Oakland to Vacaville, and I-505 from Vacaville to I-5 near Dunnigan. I-5W and most of the other Interstates around the country with directional suffixes were eventually renumbered or eliminated, except I-35E and I-35W in Texas and Minnesota. Nevertheless, San Francisco is still listed as a control city on northbound I-5 between SR 99 and I-580.

Interstate 5 in downtown Sacramento closely follows the Sacramento River. This has resulted in complex engineering work to keep the section dry due to it being located below the water table. Locally, Caltrans refers to this part of the freeway as the "Boat Section".^[45] Due to record levels of rainfall in 1980 the Boat Section was flooded with 15 ft (4.6 m) of water. Caltrans began constructing this section during the 1960s and 1970s. The freeway was engineered below grade so it would be out of the view of offices and shops in downtown Sacramento. To achieve this, the site was excavated and the seeping water was pumped from the area. An intricate drainage system, water pump and retaining wall are used to protect the freeway from the Sacramento River. However, the system slowly clogged up over the years with sand and silt buildup ^[46] Major repair work of the Boat Section began on May 30, 2008.^[45] The construction was to take 40 days to complete, requiring complete northbound and southbound closures on an alternating schedule.

In 1992, Caltrans finished upgrading the final 13 mile segment north of Lakehead.^[47]

I-5 through north San Diego County is currently undergoing expansion as part of the North Coast Corridor project.^[48] The carpool lane expansion from Lomas Santa Fe Drive to SR 78 fully opened by late 2023. As part of this expansion, the bridge carrying I-5 over San Elijo Lagoon was replaced with a much wider bridge. Previously in 2007, a carpool lane opened between Lomas Santa Fe Drive and I-805, with a continuation of the lanes on I-805 to Governor Drive opening in 2016. There are plans to construct the last three miles from SR 78 to Oceanside Harbor Drive, however, there is a lack of funding for them, and there are no plans to set aside funding from the state to construct them.^[49]

In Orange County, the HOV lane opened in the mid-1990s between SR 1 and SR 91, following the widening of the freeway between SR 55 and SR 91, between SR 91 and Artesia Boulevard in 2010, and between SR 1 and Avenida Pico in 2018. Multiple carpool flyovers were constructed during this time to connect motorists from one freeway's carpool lanes to the next (see Exit List for a list of them). In 2013, ground broke on a major expansion of the freeway through La Mirada and Norwalk in neighboring Los Angeles County to the I-605 interchange, which included a carpool lane to Florence Avenue. The carpool lane fully opened in 2023. Currently, in San Clemente, there are studies to extend the carpool lanes from their current terminus at Avenida Pico to Cristianitos Road at the county line.^[50] At an OCTA board meeting in August 2024, it was discussed that preliminary engineering is ongoing and will be complete next year. However, a timeline for actual construction was not provided.^[51] This extension would give way for I-5 to have carpool lanes for its entire length in Orange County, plus the newly widened section in Los Angeles County, for a total of 50 miles. OCTA and Caltrans are expected to work with the residents of San Clemente during the process, as several bridges may have to be replaced with wider ones, and buildings may have to be demolished for the widening.

North of downtown Los Angeles, the freeway is currently going widening, which includes the addition of HOV lanes in four phases. The first phase was the opening of a carpool lane between carpool lane between SR 170 and SR 14 in 2011. A flyover between the carpool lanes of SR 14 and I-5 opened in 2014. The second phase was between Buena Vista Street and SR 170, and the carpool lane opened in 2014. This phase also included a flyover between the existing carpool lane of SR 170 and the newly constructed I-5. The freeway in this phase went through no improvements, and used existing median shoulders to construct the HOV lane, thus all the original overpasses were retained, and some undercrossings also have no right hand shoulder as a result. A third phase saw the widening between SR 134 and Buena Vista Street, and the carpool lane opened in 2022. This phase gave room for the replacement of the Burbank Boulevard bridge, and the opening of a new interchange at Empire Avenue, which replaced the Scott Road and Lincoln Street interchanges. The Empire Avenue interchange opened in 2019^[52] and the Burbank Boulevard bridge replacement was completed in 2021.^[53] The fourth and final phase is in the Santa Clarita Valley, where Caltrans is undergoing construction to extend the carpool lane from the Newhall Pass interchange to Parker Road in Castaic. These lanes are scheduled to open to traffic in 2026.^[54] A fifth phase to build a flyover which will connect I-405's carpool lanes with I-5's is in the works, but there are no near plans to construct it.^[19] The same plan includes a southerly extension of the HOV lanes to the San Bernardino Split interchange, but there are no near plans to construct that as well. Widening that segment of the freeway will require several overpass demolitions, as well a major widening through the area, as the freeway is too small to handle the widening. The widening would also result in hundreds of homes and commercial buildings to be demolished.

County	Location	mi[55][1][56][57]	km	Exit[55]	Destinations	Notes
San Diego	San Diego	0.00	0.00		Fed. 1 south – Tijuana	Southern terminus of I-5; South end of the John J. Montgomery Freeway;[14] roadway continues beyond the Mexican border at San Ysidro Port of Entry as Federal Highway 1
		0.22	0.35	1A	Camino de la Plaza	Last USA exit southbound; northbound exit via the border inspection station's SENTRI and Ready lanes
		0.22	0.35		I-805 north	Northbound exit and southbound entrance; south end of I-805
		1.11	1.79	1B	Via de San Ysidro	No southbound entrance
		2.22	3.57	2	San Ysidro Boulevard, Dairy Mart Road
		3.03	4.88	3	SR 905 east / Tocayo Avenue	Future I-905; exits 1A-B on SR 905; former SR 117
		3.95	6.36	4	Coronado Avenue
		4.54	7.31	5A	SR 75 north (Palm Avenue) – Imperial Beach	South end of SR 75
	Chula Vista	5.31	8.55	5B	Main Street
		5.97	9.61	6	Palomar Street
		6.72	10.81	7A	L Street
		7.21	11.60	7B	J Street, Marina Parkway
		7.72	12.42	8A	H Street
		8.47	13.63	8B	E Street (CR S17)
	National City	9.31	14.98	9	SR 54 east	Exits 1A-B on SR 54
		9.95	16.01	10	Mile of Cars Way (24th Street), Bay Marina Drive
		10.66	17.16	11A	Harbor Drive, Civic Center Drive
		11.04	17.77	11B	Plaza Boulevard, 8th Street – Downtown National City
	San Diego	11.57	18.62	12	Division Street, Main Street, National City Boulevard
		12.56	20.21	13A	SR 15 north (Escondido Freeway) – Riverside	Future I-15; exits 1B-C on SR 15; former SR 103
		13.30	21.40	13B	28th Street, National Avenue
		13.99	22.51	14A	SR 75 south (San Diego-Coronado Bridge) – Coronado	Exit 13 on SR 75
		14.03	22.58	14B	Cesar E. Chavez Parkway	Formerly Crosby Street[58][59]
		14.65	23.58	15A	J Street to SR 94 east (M. L. King Jr. Freeway)	Northbound signage
					Imperial Avenue	Southbound signage
		14.95	24.06	15B	SR 94 east (M. L. King Jr. Freeway)	Northern end of the John J. Montgomery Freeway and southern end of San Diego Freeway;[14] northbound access via exit 15A; exit 1A on SR 94
		15.32	24.66	15C	B Street, Pershing Drive	Signed as exit 15B northbound
		15.98	25.72	16A	SR 163 north / Tenth Avenue – Escondido	Signed as exit 16 southbound; exit 1B on SR 163; former US 395
		16.22	26.10	16B	6th Avenue – Downtown San Diego	Northbound exit and southbound entrance
		16.82	27.07	17	Front Street, 2nd Avenue – Civic Center	No northbound exit
		16.82	27.07	17A	Hawthorn Street – San Diego Airport	No southbound exit
		16.50– 17.68	26.55– 28.45	17B	Sassafras Street – Rental Car Center, San Diego Airport	Signed as exit 18A southbound
		17.68	28.45	18A	Pacific Highway	Northbound exit and southbound entrance; former US 101
		18.19	29.27	18B	Washington Street	Former US 80 east
		18.94	30.48	19	Old Town Avenue	Serves Old Town San Diego State Historic Park
		19.97	32.14	20	Rosecrans Street	Southbound exit and northbound entrance; former SR 209 south
		19.97	32.14		I-8 – Beaches, El Centro	No southbound exit to I-8 west; exit 2 on I-8
		20.73	33.36	21	Sea World Drive, Tecolote Road
		22.17	35.68	22	Clairemont Drive, East Mission Bay Drive
		22.78	36.66	23A	Grand Avenue, Garnet Avenue	Northbound exit and southbound entrance; connection to Mission Bay Drive; Mission Bay Drive follows the original routing of former US 101/BL I-5
		23.39	37.64	23B	Balboa Avenue east	Southbound exit is via exit 23; former SR 274
		23.39	37.64	23	Balboa Avenue, Garnet Avenue	Southbound exit and northbound entrance; connection to Mission Bay Drive; Mission Bay Drive follows the original routing of former US 101/BL I-5
		25.86	41.62	26A	La Jolla Parkway west	Northbound exit and southbound entrance; formerly Ardath Road[60]
		25.86	41.62	26B	SR 52 east	Signed as exit 26 southbound; SR 52 west exit 1A
		26.70	42.97	27	Gilman Drive, La Jolla Colony Drive
		28.07	45.17	28A	Nobel Drive	Northbound exit and southbound entrance
		28.34	45.61	28B	La Jolla Village Drive	Signed as exit 28 southbound
		29.37	47.27	29	Genesee Avenue (CR S21)
		30.34	48.83	30	Sorrento Valley Road	Northbound exit and southbound entrance
		30.60	49.25	—	I-5 Local Bypass to SR 56 east	South end of Local Bypass lanes
		30.60	49.25	31	I-805 south (Jacob Dekema Freeway) – Chula Vista	Southbound exit and northbound entrance; I-805 exit 33A to Local Bypass lanes; northern terminus of I-805
		31.72	51.05	32	Carmel Mountain Road	Local Bypass lanes access only
		32.81	52.80	33A	SR 56 east (Ted Williams Freeway)	Local Bypass lanes access only; northbound exit and southbound entrance; southbound access via exit 33
		32.81	52.80	—	I-5 Local Bypass to Carmel Mountain Road	North end of Local Bypass lanes
		32.81	52.80	33B	Carmel Valley Road to SR 56 east	Signed as exit 33 southbound
		34.04	54.78	34	Del Mar Heights Road
	San Diego–Solana Beach line	36.18	58.23	36	Via de la Valle (CR S6)
	Solana Beach	37.29	60.01	37	Lomas Santa Fe Drive (CR S8)
	Encinitas	38.53	62.01	39	Manchester Avenue
		39.74	63.96	40	Birmingham Drive
		40.51	65.19	41A	Santa Fe Drive
		41.42	66.66	41B	Encinitas Boulevard (CR S9)
		42.62	68.59	43	Leucadia Boulevard
	Encinitas–Carlsbad line	43.98	70.78	44	La Costa Avenue
Carlsbad	45.48	73.19	45	Poinsettia Lane, Aviara Parkway	Aviara Parkway is 1/2 mile east of Interstate 5
	46.94	75.54	47	Palomar Airport Road (CR S12)
	47.89	77.07	48	Cannon Road	Serves Legoland California
	49.19	79.16	49	Tamarack Avenue
	50.02	80.50	50	Carlsbad Village Drive – Downtown Carlsbad	Formerly Elm Avenue[61]
	50.59	81.42	51A	Las Flores Drive
Oceanside	51.11	82.25	51B	SR 78 east (Ronald Packard Freeway) / Vista Way – Escondido, Oceanside	Signed as exits 51B (SR 78) and 51C (Vista Way) northbound; SR 78 exits 1A-B
	51.38	82.69	51C	Cassidy Street	No northbound exit
	52.21	84.02	52	Oceanside Boulevard
	53.12	85.49	53	Mission Avenue (SR 76 Bus.) – Downtown Oceanside	Serves Mission San Luis Rey
	53.67– 53.84	86.37– 86.65	54A	SR 76 east / Coast Highway (CR S21)	Signed as exits 54A (SR 76) and 54B (Coast Highway) southbound; Coast Highway was formerly Hill Street[62] and US 101
Oceanside–Camp Pendleton South line	53.84– 54.30	86.65– 87.39	54C	Harbor Drive, Vandegrift Boulevard – Camp Pendleton	Signed as exits 54B (Vandegrift Boulevard/Camp Pendleton) and 54C (Harbor Drive) northbound
​	59.35– 59.87	95.51– 96.35	Aliso Creek Rest Area
​	61.99	99.76	62	Las Pulgas Road
​	71.30	114.75	71	Basilone Road – San Onofre
San Diego–Orange county line	San Clemente	72.19	116.18	72	Cristianitos Road	Former I-5 Bus. north
Orange		73.28	117.93	73	Avenida Magdalena	Northbound signage
					Avenida Calafia	Southbound signage
		73.91	118.95	74	El Camino Real	Former US 101; former I-5 Bus.
		74.94	120.60	75	Avenida Presidio	No southbound exit
		74.94	120.60		Avenida Palizada	Southbound exit and northbound entrance; former I-5 Bus. south
		75.67	121.78	76	Avenida Pico
		76.56	123.21	77	Avenida Vista Hermosa
	San Clemente–Dana Point line	78.08	125.66	78	Camino de Estrella
	Dana Point–San Juan Capistrano line	79.06	127.23	79	SR 1 north (Pacific Coast Highway) / Camino Las Ramblas – Beach Cities	Pacific Coast Highway was former US 101 Alt. north
	San Juan Capistrano			—	Stonehill Drive	Northbound entrance only
		80.83	130.08	81	Camino Capistrano
		81.88	131.77	82	SR 74 east (Ortega Highway) – San Juan Capistrano
		83.19	133.88	83	Junipero Serra Road
	San Juan Capistrano–Mission Viejo– Laguna Niguel tripoint	84.83	136.52	85A	SR 73 Toll north (San Joaquin Hills Toll Road) – Long Beach	Northbound exit and southbound entrance
	Mission Viejo	85.22	137.15	85B	Avery Parkway	Signed as exit 85 southbound
		86.06	138.50	86	Crown Valley Parkway
		87.50	140.82	88	Oso Parkway
	Mission Viejo–Laguna Hills line	88.81	142.93	89	La Paz Road
		89.75	144.44	90	Alicia Parkway
	Laguna Hills–Lake Forest line	90.97	146.40	91	El Toro Road (CR S18)
		91.78	147.71	92	Lake Forest Drive	Signed as exit 92A northbound
	Irvine	92.45	148.78		I-5 Truck / Bake Parkway	Signed as exit 92B northbound; serves the truck bypass around the El Toro Y
				♢	I-405 north	HOV access only; northbound exit and southbound entrance
		93.58	150.60	94A	I-405 north (San Diego Freeway north) – Long Beach	Northern end of San Diego Freeway and southern end of Santa Ana Freeway;[14] northbound exit and southbound entrance; El Toro Y; connects to SR 133 south; former SR 7
		94.49	152.07	94B	Alton Parkway	Signed as exit 94 southbound
		94.84	152.63	♢	Barranca Parkway	HOV access only; southbound exit and northbound entrance
		95.47	153.64	95	SR 133 south / Barranca Parkway – Laguna Beach	Southbound exit and northbound entrance; SR 133 north exit 10
		96.22	154.85	96A	Sand Canyon Avenue	Signed as exit 96 northbound
		96.15	154.74	96B	SR 133 Toll north (Eastern Toll Road) – Rancho Santa Margarita, Riverside	Signed as exit 95 northbound; SR 133 south exits 10A-B
		97.27	156.54	97	Jeffrey Road
		98.86	159.10	99	Culver Drive
	Irvine–Tustin line	99.86	160.71	100	Jamboree Road to SR 261 Toll	Provides access to and from SR 261[63]
	Tustin				Myford Road	Exit removed in the 1990s during the expansion of I-5
		100.50	161.74	101A	Tustin Ranch Road
		101.37	163.14	101B	Red Hill Avenue
		101.90	163.99	102	Newport Avenue	Southbound exit and northbound entrance
		102.54	165.02	103	SR 55 (Costa Mesa Freeway) – Riverside, Anaheim, Newport Beach	Signed as exits 103A (north) and 103B (south) northbound; no southbound exit to SR 55 north; SR 55 north exit 10B-11A, south exit 11A
	Santa Ana	103.18– 103.54	166.05– 166.63	104A	First Street, Fourth Street	Signed as exit 103C northbound
				♢	SR 55 south	HOV access only; southbound exit and northbound entrance
				♢	Grand Avenue, Santa Ana Boulevard	HOV access only; northbound exit and southbound entrance
		104.04	167.44	104B	Grand Avenue, Santa Ana Boulevard	Signed as exit 104 northbound
		104.74	168.56	105A	17th Street
				♢	Main Street	HOV access only; southbound exit and northbound entrance; removed with freeway upgrades[64]
		105.37	169.58	105B	Main Street, Broadway	Main Street south of I-5 was SR 73 south; north of I-5, it was former SR 51 north
	Santa Ana–Orange line				Flower Street	Exit removed in 1991 for expansion of I-5; was southbound exit only[65]
		106.52	171.43	106	SR 22 (Garden Grove Freeway) – Long Beach, Orange	Signed as exits 107A (east) and 107B (west) southbound; south end of Orange Crush interchange; SR 22 east exits 14C–D, west exit 14B; no northbound exit to SR 22 east
		106.52	171.43	107A	La Veta Avenue, Bristol Street	Northbound exit is part of exit 106; serves Angel Stadium
		106.52	171.43		SR 57 north (Orange Freeway) – Pomona	Northbound exit and southbound entrance; north end of Orange Crush interchange; SR 57 exit 1A
				♢	SR 57 north	HOV access only; northbound exit and southbound entrance
	Orange	106.52	171.43	107B	Chapman Avenue	No southbound exit
		107.48	172.97	107C	State College Boulevard, The City Drive	State College Boulevard was former SR 250 north
	Anaheim	107.96	173.74	♢	Gene Autry Way, Disney Way	HOV access only; Disney Way not signed southbound
		108.65	174.86	109	Katella Avenue, Disney Way, Orangewood Avenue	Signed as exit 109A southbound; Disney Way not signed southbound, Orangewood Avenue (former SR 51 south) not signed northbound
		108.89	175.24	109B	Disney Way, Anaheim Boulevard	No northbound exit; Anaheim Boulevard was former SR 72
		109.68	176.51	110A	Harbor Boulevard, Ball Road	Signed as exit 110 northbound; Ball Road not signed southbound
		109.95	176.95	110B	Disneyland Drive, Ball Road	No northbound exit
				♢	Disneyland Drive	HOV access only; southbound exit only
					South Street, West Street	Exit removed in the 1990s during the expansion of I-5; was northbound exit and entrance
		111.23	179.01	111	Lincoln Avenue	Former SR 214
					Loara Street	Exit removed in the 1990s during the expansion of I-5; was northbound exit and entrance
		111.77	179.88	112	Euclid Street
					Crescent Avenue	Exit removed in December 1997 for expansion of I-5; was northbound exit and entrance[66]
		112.79	181.52	113	Brookhurst Street, La Palma Avenue	Signed as exits 113A (Brookhurst Street, La Palma Avenue west) and 113B (La Palma Avenue east) northbound
	Anaheim–Fullerton line	113.78	183.11	113C	SR 91 west (Artesia Freeway)	Northbound exit and southbound entrance; SR 91 east exit 24
			♢	SR 91 west	HOV access only; northbound exit and southbound entrance
Fullerton	114.23	183.84	114A	Magnolia Avenue to SR 91 east	No northbound entrance; southbound exit signed as Magnolia Avenue only; signed as exit 114 northbound
Fullerton–Buena Park line	114.38	184.08	114B	SR 91 east (Riverside Freeway) – Riverside	Southbound exit and northbound entrance; SR 91 west exit 24
			♢	SR 91 east	HOV access only; southbound exit and northbound entrance
Buena Park			—	Orangethorpe Avenue	Northbound entrance only
	115.41	185.73	115	Auto Center Drive	Formerly Manchester Boulevard; northbound exit only; southbound entrance removed; former US 101 / SR 14[67]
	115.71	186.22	116	SR 39 (Beach Boulevard)
Orange–Los Angeles county line	Buena Park–La Mirada line	116.54	187.55	117	Artesia Boulevard, Knott Avenue	Artesia Boulevard was former SR 91; Knott Avenue not signed northbound
Los Angeles	La Mirada–Santa Fe Springs line	117.87	189.69	118	Valley View Avenue
	Santa Fe Springs				Alondra Boulevard	Closed April 18, 2017; were northbound and southbound entrances only (the latter via Firestone Boulevard)
	Santa Fe Springs–Norwalk line	119.07	191.62	119	Carmenita Road
		120.10	193.28	120	Rosecrans Avenue	Formerly exit 120A northbound
	Norwalk	120.30	193.60	120B	Firestone Boulevard	Closed; was northbound exit and southbound entrance; former SR 42
		120.88	194.54	121	Norwalk Boulevard, Imperial Highway	Signed as exit 122 southbound; former SR 35 (Norwalk Boulevard); former SR 90 (Imperial Highway)
		121.57	195.65	122	Imperial Highway, Pioneer Boulevard	Combined with exit 121 with freeway upgrades
	Santa Fe Springs–Downey line	123.04	198.01	123	Florence Avenue	Southbound exit is part of exit 124 via ramp to I-605 south
		123.51	198.77	124	I-605 (San Gabriel River Freeway)	I-605 exit 11
	Downey	124.97	201.12	125	SR 19 (Lakewood Boulevard, Rosemead Boulevard)
		125.61	202.15	126A	Paramount Boulevard
	Montebello–Commerce line	126.36	203.36	126B	Slauson Avenue	No northbound entrance
		127.54	205.26	128A	Bandini Boulevard, Garfield Avenue	Bandini Boulevard not signed northbound
	Commerce	128.21	206.33	128B	Washington Boulevard
		129.46	208.35	129	Atlantic Boulevard, Eastern Avenue	Northbound exit signed as "Atlantic Boulevard north" only; former SR 15
		129.71	208.75	130A	Atlantic Boulevard south to I-710 south (Long Beach Freeway)	Northbound exit and entrance only
		129.71	208.75		Triggs Street	Southbound exit and entrance only
		130.44	209.92	130B	Eastern Avenue	Northbound exit only
		130.54	210.08	130C	I-710 north (Long Beach Freeway) – Pasadena	Northbound left exit and southbound left entrance; I-710 south exit 18
				130B	I-710 south (Long Beach Freeway) – Long Beach	Southbound exit and northbound entrance; northbound access is via exit 130A; I-710 north exit 18A
	East Los Angeles	130.81	210.52	131A	Olympic Boulevard	Southbound exit and northbound entrance; former SR 26 / SR 245
		131.46	211.56	131B	Ditman Avenue, Indiana Street	Signed as exit 131 northbound
	Los Angeles	131.60	211.79	132	Indiana Street, Calzona Street
		132.86	213.82	133	Grande Vista Avenue	Northbound exit; southbound entrance via Concord Street
		133.37	214.64	—	US 101 north (Santa Ana Freeway north) – Los Angeles	I-5 south transitions onto Santa Ana Freeway south[14] southern end of Golden State Freeway; northbound left exit and southbound entrance; south end of East Los Angeles Interchange proper; access to Los Angeles Civic Center
				134A	I-10 west (Santa Monica Freeway) – Santa Monica	Northbound exit signage
				134B	Soto Street	Signed as exit 134A southbound, previously exit 133A for northbound
				134B	SR 60 east (Pomona Freeway) – Pomona	Southbound left exit and northbound entrance; SR 60 west exit 1E, east exit 1A
		133.41	214.70	134C	Seventh Street	No southbound exit; left exit northbound, formerly exit 133B
				—	I-10 west (Santa Monica Freeway) – Santa Monica	Southern end of I-10 overlap; southbound exit signage; I-5 south follows I-10 exit 16B;[68] north end of East Los Angeles Interchange proper
		134.22	216.01	135A	Fourth Street	Former SR 60[69]
		135.11	217.44	135B	Cesar Chavez Avenue	Northbound exit and southbound entrance; formerly Brooklyn Avenue
		135.45	217.99	135C	I-10 east (San Bernardino Freeway) – San Bernardino	Northern end of I-10 overlap; 5-10 Split portion of the East Los Angeles Interchange; signed as exit 135B southbound; I-10 exit 19B
				—	Marengo Street	Northbound entrance only
		135.45	217.99	135C	Mission Road	No northbound exit
		135.86– 136.39	218.65– 219.50	136A	Main Street	Signed as exit 136 southbound; no entrance ramps
		136.39	219.50	136B	Broadway	Southbound exit is part of exit 137A
		137.10	220.64	137A	SR 110 north (Arroyo Seco Parkway) – Pasadena	Signed as exit 137B northbound; SR 110 south exit 26B
		137.10	220.64	137A	Figueroa Street	Southbound exit is part of exit 137B; former SR 159 / SR 163 north
		137.36	221.06	137B	SR 110 south (Arroyo Seco Parkway) – Los Angeles	Southbound exit and northbound entrance; SR 110 north exit 26A
		138.49	222.88	138	Stadium Way
		139.21	224.04	139	SR 2 (Glendale Freeway) – Glendale, Echo Park	Signed as exits 139A (north) and 139B (south) northbound; SR 2 north exit 13, south exit 13A
		139.68	224.79	140A	Fletcher Drive	Southbound exit and northbound entrance; former SR 2
		140.32	225.82	140B	Glendale Boulevard	Signed as exit 140 northbound
		140.82	226.63	141A	Los Feliz Boulevard	Signed as exit 141 southbound
		140.99	226.90	141B	Griffith Park	Northbound exit and southbound entrance
		142.44	229.23	142	Colorado Street	Former SR 134 east / SR 163 south
		143.74	231.33	144A	SR 134 east (Ventura Freeway) – Glendale, Pasadena	Signed as exit 144 southbound; SR 134 west exit 5; northbound exit also includes direct exit ramp to Zoo Drive, which serves the Los Angeles Zoo
				144B	SR 134 west (Ventura Freeway) – Ventura	Northbound exit and southbound entrance; southbound access is via exit 145A; SR 134 east exits 5A-B
	Glendale	144.50	232.55	145A	Western Avenue to SR 134 west
	Burbank	145.09	233.50	145B	Alameda Avenue	Former SR 134 west
		145.82	234.67	146A	Olive Avenue, Verdugo Avenue
		146.44	235.67	146B	Burbank Boulevard
		147.27	237.01	147A	Scott Road	Former interchange with no southbound entrance; closed as part of the Empire Avenue interchange project
		147.30	237.06	147B	Lincoln Street	Former northbound exit and southbound entrance; closed as part of the Empire Avenue interchange project
		147.41	237.23	147	Empire Avenue, North San Fernando Boulevard	Access to Hollywood Burbank Airport
		147.89	238.01	148	Buena Vista Street
	Los Angeles	149.01	239.81	149	Hollywood Way	Access to Hollywood Burbank Airport
		149.94	241.31	150A	Glenoaks Boulevard	Northbound exit and southbound entrance
		150.34	241.95	150B	Sunland Boulevard – Sun Valley	Signed as exit 150 southbound
		150.94	242.91	151	Penrose Street	No northbound entrance
		151.65	244.06	152	Lankershim Boulevard, Tuxford Street	Former SR 170
		152.60	245.59	153A	Sheldon Street
		153.02	246.26	153B	SR 170 south (Hollywood Freeway) – Hollywood	Southbound exit and northbound entrance; SR 170 north exit 11B
			♢	SR 170 south	HOV access only; southbound exit and northbound entrance
153.02		246.26	153B	Branford Street	Northbound exit and southbound entrance
154.07		247.95	154	Osborne Street – Arleta
154.62		248.84	155A	Terra Bella Street	Northbound exit and southbound entrance
155.16		249.71	155B	Van Nuys Boulevard – Pacoima	Northbound exit and southbound entrance
155.72		250.61	156A	Paxton Street to SR 118 west	Signed as exit 156B northbound
156.02		251.09	156B	SR 118 (Ronald Reagan Freeway)	Signed as exit 156A northbound; southbound exit to SR 118 west is via exit 156A; SR 118 exit 44A
156.64		252.09	157A	Brand Boulevard – San Fernando	Northbound exit and southbound entrance; former SR 118
156.90		252.51	157B	San Fernando Mission Boulevard – San Fernando	Signed as exit 157 southbound; former US 6 south / US 99 south
158.26		254.69	158	I-405 south (San Diego Freeway) – Santa Monica	Southbound exit and northbound entrance; former SR 7 south
			—	I-5 Truck south to I-405 south	Southbound truck route
159.31		256.38	159	Roxford Street – Sylmar	Signed as exits 159A (east) and 159B (west) northbound
160.67		258.57	161A	I-210 east (Foothill Freeway) – Pasadena	Signed as exit 161 northbound; I-210 west exits 1A-B
160.67		258.57	—	I-5 Truck north to SR 14 north	South end of truck route; south end of Newhall Pass interchange at Newhall Pass
			♢	SR 14 north	HOV access only; northbound exit and southbound entrance
161.09		259.25	161B	Balboa Boulevard, San Fernando Road	Southbound exit only; northbound entrance is via Sierra Highway
162.24		261.10	162	SR 14 north (Antelope Valley Freeway) – Palmdale, Lancaster	Northern end of HOV lanes on I-5; SR 14 south exits 1A-B; southbound entrance includes direct exit ramp to exit 161B
​	163.01	262.34	—	I-5 Truck south to SR 14 north / Sierra Highway	North end of truck route; north end of Newhall Pass interchange at Newhall Pass
Santa Clarita	165.69	266.65	166	Calgrove Boulevard
	166.99	268.74	167	Lyons Avenue, Pico Canyon Road
	168.10	270.53	168	McBean Parkway – Stevenson Ranch
	169.13	272.19	169	Valencia Boulevard
	170.23	273.96	170	Magic Mountain Parkway	Former SR 126 east
	170.82	274.91	171	Rye Canyon Road	Southbound exit and entrance only
	172.14	277.03	172	SR 126 west / Newhall Ranch Road – Ventura
Castaic	173.26	278.83	173	Hasley Canyon Road
	175.67	282.71	176A	Parker Road – Castaic	Northbound exit and southbound entrance
	176.15	283.49	176B	Lake Hughes Road – Castaic Lake Park, Castaic	Signed as exit 176 southbound
​	182.63	293.91	183	Templin Highway
​	191.13	307.59	191	Vista del Lago Road
​	194.62	313.21	195	Smokey Bear Road
​	198.15	318.89	198A	SR 138 east – Lancaster, Palmdale	Northbound exit and southbound entrance; southbound exit is via exit 199
​	198.42	319.33	198	Quail Lake Road	Signed as exit 198B northbound
​	198.76	319.87	199	SR 138 east – Lancaster, Palmdale	Southbound exit and northbound entrance; northbound exit is via exit 198A
​	202.46	325.83	202	Gorman	Connects to Gorman School Road
​	203.67	327.78	Tejon Pass, elevation 4,144 feet (1,263 m)[70]
Los Angeles–Kern county line	Lebec	205.23	330.29	205	Frazier Mountain Park Road
Kern		205.97	331.48	Tejon Pass Rest Area
		206.88	332.94	207	Lebec	Connects to Lebec Service Road, Lebec Road
		210.29	338.43	210	Fort Tejon	Connects to Lebec Road
	​	215.42	346.68	215	Grapevine	Connects to Grapevine Road West, Grapevine Road East
	​	218.79	352.11	219	Laval Road	Signed as exits 219A (east) and 219B (west)
	Wheeler Ridge	221.13	355.87	221	SR 99 north (Golden State Highway[14]) – Bakersfield, Fresno	Wheeler Ridge Interchange; southern end of West Side Freeway;[14] northbound left exit and southbound left entrance; former US 99 north
				—	I-5 Truck south	Southbound truck bypass
	​	224.88	361.91	225	SR 166 (Maricopa Highway) – Mettler, Maricopa, Taft
	​	228.16	367.19	228	Copus Road
	​	234.34	377.13	234	Old River Road
	​	238.76	384.25	239	SR 223 east (Bear Mountain Boulevard) – Arvin
	​	244.06	392.78	244	SR 119 (Taft Highway) – Pumpkin Center, Lamont	Former US 399
	​	246.46	396.64	246	SR 43 (Enos Lane) – Shafter, Wasco, Taft, Maricopa
	​	252.82	406.87	253	SR 58 east (Stockdale Highway) – Bakersfield	Southern end of SR 58 overlap
	Buttonwillow	257.42	414.28	257	SR 58 west – Buttonwillow, McKittrick	Northern end of SR 58 overlap
		259.38	417.43	Buttonwillow Rest Area
	​	261.91	421.50	262	7th Standard Road, Rowlee Road	Northbound exit and southbound entrance
	​	263.28	423.71	263	Buttonwillow, McKittrick	Southbound exit and northbound entrance; connects to Buttonwillow Drive
	​	267.88	431.11	268	Lerdo Highway – Shafter
	Lost Hills	278.29	447.86	278	SR 46 – Lost Hills, Paso Robles, Wasco	Former US 466
	​	287.62	462.88	288	Twisselman Road
Kings	​	304.66	490.30	305	Utica Avenue
	Kettleman City	308.90	497.13	309	SR 41 (E.G. Lewis Highway) – Kettleman City, Fresno, Paso Robles
Kings–Fresno county line	Avenal	319.25	513.78	319	SR 269 (Lassen Avenue)
Fresno	​	320.45	515.71	Avenal-Coalinga Rest Area
	​	324.52	522.26	325	Jayne Avenue	Connects to SR 198 west
	​	333.89	537.34	334	SR 198 – Lemoore, Hanford
	​	336.98	542.32	337	SR 33 south – Coalinga	Southbound signage; southern end of SR 33 overlap
	​				SR 145 north – Kerman	Northbound signage; southern terminus of SR 145
	​	348.98	561.63	349	SR 33 north (Derrick Avenue) – Mendota	Northern end of SR 33 overlap
	​	357.38	575.15	357	Kamm Avenue
	​	364.82	587.12	365	Manning Avenue
	​	368.01	592.25	368	Panoche Road
	​	371.77	598.31	372	Russell Avenue
	​	379.10	610.10	379	Shields Avenue (CR J1) – Mendota
	​	384.80	619.28	385	Nees Avenue – Firebaugh
Merced	​	385.83	620.93	John Erreca Safety Roadside Rest Area
	​	391.46	629.99	391	SR 165 north (Mercey Springs Road) – Los Banos
	​	402.76	648.18	403	SR 33 / SR 152 – Los Banos, Fresno, Gilroy, Hollister, San Jose, Monterey	Signed as exits 403A (south/east) and 403B (north/west)
	Santa Nella	407.02	655.04	407	SR 33 – Santa Nella, Gustine, Gilroy
	​	417.57	672.01	418	SR 140 east – Gustine, Merced
Stanislaus	​	423.17	681.03	423	Stuhr Road (CR J18) – Newman
	​	428.38	689.41	428	Fink Road – Crows Landing
	Patterson	433.52	697.68	434	Diablo Grande Parkway, Sperry Avenue (CR J17) - Patterson
	​	440.73	709.29	441	Howard Road (CR J16) – Westley
	​	444.86	715.93	Westley Rest Area
San Joaquin	​	446.35	718.33	446	I-580 west – Tracy, San Francisco	Northbound left exit and southbound left entrance; southbound access is exit 458B
	​	449.16	722.85	449	SR 132 – Modesto, San Francisco	Signed as exits 449A (east) and 449B (west)
	​	452.22	727.78	452	SR 33 south (Ahern Road) – Tracy, Vernalis	Ahern Road north of I-5 was former SR 33 north
	​	456.78	735.12	457	Kasson Road (CR J4)
	​	457.52	736.31	458A	I-205 BL west (Eleventh Street) – Tracy	Southbound exit and northbound entrance; former US 50 west
	Lathrop	458.34	737.63	458B	I-205 west (Robert T. Monagan Freeway) to I-580 west – San Francisco	Southbound exit and northbound entrance
		459.59	739.64	460	Mossdale Road, Manthey Road
		460.55	741.18	461	SR 120 east – Manteca, Sonora	SR 120 exits 1A-B
		462.19	743.82	462	Louise Avenue
		463.24	745.51	463	Lathrop Road
		465.30	748.83	465	Roth Road – Sharpe Depot
	French Camp	466.57	750.87	467A	El Dorado Street	Northbound exit and southbound entrance; former US 50 east
		467.16	751.82	467B	Mathews Road	Signed as exit 467 southbound
	Stockton	468.26	753.59	468	French Camp Road (CR J9), Arch Airport Road
		469.38	755.39	469	Downing Avenue, Carolyn Weston Boulevard
		470.36	756.97	470	Eighth Street
		471.07	758.11	471	SR 4 west (Charter Way / SR 4 Bus. east)	Southern end of SR 4 overlap; former SR 4 east
		471.91	759.47	472	SR 4 east to Navy Drive / SR 99 – Downtown Stockton	Northern end of SR 4 overlap; serves the Port of Stockton; SR 4 exits 65A-B
		472.71	760.75	473	Pershing Avenue, Oak Street, Fremont Street
		473.64	762.25	474A	Monte Diablo Avenue
		474.25	763.23	474B	Country Club Boulevard, Alpine Avenue
		475.71	765.58	476	March Lane
		477.17	767.93	477	Benjamin Holt Drive
		478.38	769.88	478	Hammer Lane
		481.02	774.13	481	Eight Mile Road
	​	485.27	780.97	485	SR 12 – Lodi, Fairfield
	​	487.39	784.38	487	Turner Road
	​	490.43	789.27	490	Peltier Road (CR J12)
	​	493.33	793.94	493	Thornton, Walnut Grove	Connects to CR J11
Sacramento	​	497.67	800.92	498	Twin Cities Road (CR E13)
	​	504.03	811.16	504	Hood Franklin Road
	Elk Grove	506.37	814.92	506	Elk Grove Boulevard (CR E12)
		507.58	816.87	508	Laguna Boulevard
	Sacramento	509.91	820.62	510	Cosumnes River Boulevard
		511.69	823.49	512	Pocket Road, Meadowview Road	Connects to SR 160
		512.73	825.16	513	Florin Road
		514.19	827.51	514	43rd Avenue	Southbound exit and northbound entrance
		514.84	828.55	515	Fruitridge Road, Seamas Avenue
		516.07	830.53	516	Sutterville Road
		518.11	833.82	518	US 50 (I-80 BL/I-305) to SR 99 south – South Lake Tahoe, San Francisco	Southern end of SR 99 overlap; former I-80; US 50/I-80 BL exit 4A; provides direct exit/entrance ramps to/from Broadway
		518.72	834.80	519A	Q Street	Entrances are via P Street; serves Golden 1 Center
		519.34	835.80	519B	J Street – Downtown Sacramento	Entrances are via I Street; serves Golden 1 Center
		520.19	837.16	520	Richards Boulevard
		520.88	838.28	521A	Garden Highway	Signed as exit 521 southbound
		521.51	839.29	521B	West El Camino Avenue	Northbound exit and southbound entrance
		522.26	840.50	522	I-80 – San Francisco, Reno	Former I-880; I-80 exit 86
		523.59	842.64	524	Arena Boulevard
		524.56	844.20	525A	Del Paso Road
		525.45	845.63	525B	SR 99 north – Yuba City, Marysville	Northern end of SR 99 overlap; SR 99 exit 306
	​			527	Metro Air Parkway[71]
	​	528.27	850.17	528	Sacramento International Airport	Connects to Airport Boulevard
	​	529.26	851.76	Elkhorn Rest Area (southbound only)
Yolo	​	530.71	854.09	531	Road 22	Former SR 16
	Yolo Bypass	530.71	854.09	Elkhorn Causeway
	Woodland	535.72	862.16	536	Road 102 (CR E8)
		537.28	864.67	537	Main Street (I-5 Bus. north) to SR 113 south – Woodland	Northbound exit and southbound entrance; former SR 16
		537.28	864.67	537	SR 113 south – Davis	Southern end of SR 113 overlap; southbound exit and northbound entrance
		538.45	866.55	538	SR 113 north (East Street) – Yuba City	Northern end of SR 113 overlap
	​	539.60	868.40	540	West Street
	​	541.00	870.66	541	SR 16 west (I-5 Bus. south) – Esparto
	​	542.53	873.12	542	Yolo	Connects to Road 17
	​	547.81	881.61	548	Zamora	Connects to Road 13, CR E10
	​	552.80	889.65	553	I-505 south – Winters, San Francisco	Southbound exit and northbound entrance
	​	553.98	891.54	554	Road 8
	​	555.76	894.41	556	Dunnigan	Connects to Road 6, CR E4
	​	556.52	895.63	Dunnigan Rest Area
Yolo–Colusa county line	​	559.11	899.80	559	County Line Road
Colusa	Arbuckle	565.90	910.73	566	Arbuckle, College City	No northbound entrance; connects to I-5 BL north
		566.81	912.19	567	Frontage Road (I-5 BL south) – Arbuckle	Former US 99W
	​	569.42	916.39	569	Hahn Road
	Williams	575.02	925.40	575	Husted Road (I-5 Bus. north)
		577.09	928.74	577	Williams	Connects to SR 20 Bus.
		577.83	929.93	578	SR 20 – Clear Lake, Colusa
	​	583.41	938.91	Maxwell Rest Area
	​	585.84	942.82	586	Maxwell Road
	​	588.36	946.87	588	Maxwell	Southbound exit and northbound entrance; former US 99W; connects to I-5 Bus. south
	​	590.95	951.04	591	Delevan Road
Glenn	​	595.00	957.56	595	Road 68 – Princeton
	Willows	601.09	967.36	601	Road 57 (I-5 Bus. north)
		603.35	971.00	603	SR 162 – Willows, Oroville
	​	607.38	977.48	607	Road 39 – Bayliss
	​	608.00	978.48	Willows Rest Area
	​	610.28	982.15	610	Artois	Connects to Road 33
	​	614.30	988.62	614	Road 27
	Orland	618.30	995.06	618	South Street, Road 16
		619.29	996.65	619	SR 32 – Orland, Chico
	​	621.29	999.87	621	Road 7 (I-5 Bus. south)
Tehama	​	628.00	1,010.67	628	Liberal Avenue, Road 99W
	Corning	629.72	1,013.44	630	South Avenue
		631.21	1,015.83	631	Corning Road, Solano Street (CR A9)
	​	632.73	1,018.28	Lt. John C. Helmick Rest Area
	​	632.77	1,018.34	633	Finnell Avenue – Richfield
	​	636.20	1,023.86	636	Gyle Road (CR A11) – Tehama, Los Molinos
	​	642.01	1,033.21	642	Flores Avenue – Proberta, Gerber
	Red Bluff	647.10	1,041.41	647A	South Main Street (I-5 BL north / Historic US 99 north / CR A8 south)	Signed as exit 647 northbound; former US 99W
		647.17	1,041.52	647B	Diamond Avenue	Southbound exit and northbound entrance
		648.76	1,044.08	649	SR 36 (Antelope Boulevard) to SR 99 – Chico	Former US 99E
		649.70	1,045.59	650	Adobe Road
		650.61	1,047.06	651	Main Street (I-5 BL south / Historic US 99 south)	Southbound exit and northbound entrance; connects to SR 36 west; northern end of West Side Freeway[14]
		651.78	1,048.94	652	Wilcox Golf Road
	​	652.98	1,050.87	653	Jellys Ferry Road
	​	655.66	1,055.18	Herbert S. Miles Rest Area
	​	657.11	1,057.52	657	Auction Yard Road, Hooker Creek Road
	​	659.46	1,061.30	659	Sunset Hills Drive, Auction Yard Road
	​	662.27	1,065.82	662	Bowman Road / CR A17 – Cottonwood
Cottonwood Creek		662.86	1,066.77	Bridge
Shasta	Cottonwood	663.76	1,068.22	664	Gas Point Road
		664.76	1,069.83	665	Cottonwood	Southbound exit and northbound entrance; connects to Main Street
	Anderson	666.24	1,072.21	667A	SR 273 north (Historic US 99 north)	Northbound exit and southbound entrance
		667.14	1,073.66	667B	Deschutes Road, Factory Outlets Drive	Signed as exit 667 southbound; no southbound entrance
		668.49	1,075.83	668	Balls Ferry Road	Northbound signage
					North Street	Southbound signage
		669.59	1,077.60	670	Riverside Avenue
	​	672.62	1,082.48	673	Knighton Road – Redding Airport
	Redding	675.00	1,086.31	675	South Bonnyview Road, Churn Creek Road
		677.31	1,090.02	677	Cypress Avenue
		678.30	1,091.62	678	SR 44 – Eureka, Lassen National Park	Signed as exits 678A (east) and 678B (west) southbound; SR 44 exits 2A-B; NB exit to SR 44 east provides exit ramp to Hilltop Drive
		680.17	1,094.63	680	SR 299 (Lake Boulevard)
		680.92	1,095.83	681A	Twin View Boulevard	Signed as exit 681 northbound
		681.33	1,096.49	681B	SR 273 (Market Street / Historic US 99 south)	Southbound exit and northbound entrance
		682.25	1,097.97	682	Oasis Road
	Shasta Lake	683.85	1,100.55	684	Pine Grove Avenue
		684.99	1,102.38	685	SR 151 (Shasta Dam Boulevard)
		686.93	1,105.51	687	Wonderland Boulevard – Mountain Gate
	​	688.89	1,108.66	689	Fawndale Road, Wonderland Boulevard
	​	690.48	1,111.22	690	Bridge Bay Road
	​	690.56	1,111.35	Pit River Bridge over Shasta Lake
	​	692.17	1,113.94	692	Turntable Bay Road
	​	693.45	1,116.00	693	Packers Bay Road	Southbound exit and entrance only
	​	693.88	1,116.69	O'Brien Rest Area (northbound only)
	​	695.01	1,118.51	695	Shasta Caverns Road – O'Brien
	​	698.18	1,123.61	698	Gilman Road, Salt Creek Road
	Lakehead-Lakeshore	702.40	1,130.40	702	Lakeshore Drive, Antlers Road
		703.66	1,132.43	704	Riverview Drive – Lakehead
		704.50	1,133.78	Lakehead Rest Area (southbound only)
	​	707.11	1,137.98	707	Vollmers, Delta	Connects to Delta School Road
	​	710.31	1,143.13	710	Slate Creek Road – La Moine
	​	711.97	1,145.80	712	Pollard Flat	Connects to Pollard Camp Road
	​	713.76	1,148.69	714	Gibson Road
	​	718.27	1,155.94	718	Sims Road
	​	720.21	1,159.07	720	Flume Creek Road
	​	721.37	1,160.93	721	Conant Road
	​	722.61	1,162.93	723	Sweetbrier Avenue
	​	724.44	1,165.87	724	Castella	Connects to Castle Creek Road
	​	726.27	1,168.82	726	Soda Creek Road
	​	726.86	1,169.77	727	Crag View Drive	Northbound exit only
	​	727.70	1,171.12	728	Railroad Park Road, Crag View Drive
Siskiyou	​	728.57	1,172.52	729	Dunsmuir Avenue (I-5 BL north / Historic US 99 north)
	Dunsmuir	730.39	1,175.45	730	Dunsmuir Avenue (I-5 BL / Historic US 99)	Serves Dunsmuir station
		731.72	1,177.59	732	Siskiyou Avenue, Dunsmuir Avenue (I-5 BL south / Historic US 99 south)
		733.78	1,180.90	734	Mott Road
	​	736.36	1,185.06	736	SR 89 – McCloud, Reno
	​	736.70	1,185.60	737	South Mount Shasta Boulevard (I-5 BL north / Historic US 99 north)	Northbound exit and southbound entrance
	Mount Shasta	738.37	1,188.29	738	West Lake Street (CR A10)
		739.94	1,190.82	740	North Mount Shasta Boulevard (I-5 BL south / Historic US 99 south)	Southbound exit and northbound entrance
		741.06	1,192.62	741	Abrams Lake Road
	​	743.22	1,196.10	743	Summit Drive, Truck Village Drive
	Weed	745.32	1,199.48	745	Vista Drive (I-5 BL north)
		746.95	1,202.10	747	US 97 (South Weed Boulevard / I-5 BL north / Historic US 99 north) – Klamath Falls
		747.74	1,203.37	748	SR 265 south (North Weed Boulevard / I-5 BL south / Historic US 99 south)
	​	750.54	1,207.88	751	Stewart Springs Road – Edgewood, Gazelle
	​	753.43	1,212.53	753	Weed Airport Road	Serves Weed Airport, Weed Rest Area
	​	758.72	1,221.04	759	Louie Road
	Grenada	765.75	1,232.36	766	Montague, Grenada, Gazelle	Connects to CR A12
	​	770.05	1,239.28	770	Easy Street, Shamrock Road
	Yreka	773.10	1,244.18	773	To SR 3 (I-5 BL north / Historic US 99 north) – Yreka, Fort Jones, Etna	Connects to Moonlit Oaks Avenue
		775.04	1,247.31	775	Central Yreka	Northbound signage
					Miner Street, North Foothill Drive	Southbound signage
		775.72	1,248.40	776	SR 3 (I-5 BL south / Historic US 99 south) – Montague
	​	785.81	1,264.64	786	SR 96 west (Klamath River Highway) – Willow Creek	Serves Randolf Collier Rest Area
	Hornbrook	789.03	1,269.82	789	Henley, Hornbrook (CR A28)
		790.40	1,272.03	790	Hornbrook Highway, Ditch Creek Road
	​	790.32	1,271.90	Agricultural Inspection Station (southbound only)
	​	793.00	1,276.21	793	Bailey Hill Road
	​	795.81	1,280.73	796	Hilt	Connects to Hilt Road
	​	796.77	1,282.28		I-5 north – Medford, Portland	Continuation into Oregon
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former       Concurrency terminus       Electronic toll collection       HOV only       Incomplete access       Route transition

The I-5 truck route through the Newhall Pass Interchange in Sylmar has its own separate exits. The route runs from the I-210 interchange to north of the SR 14 interchange.

The entire route is in Los Angeles County. All exits are unnumbered.

Location	mi	km	Destinations	Notes
Sylmar	0.00	0.00	I-5 south – Los Angeles	South end of I-5 truck route
	0.42	0.68	I-210 east (Foothill Freeway) – Pasadena	Southbound exit and northbound entrance
	1.57	2.53	Sierra Highway	Southbound exit and northbound entrance
			SR 14 north – Palmdale, Lancaster	No northbound entrance
​	2.34	3.77	I-5 north – Sacramento	North end of I-5 truck route
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access

There are six signed auxiliary Interstate Highways associated with I-5 in California:

• I-105 runs from SR 1 near El Segundo and Los Angeles International Airport (LAX) east to I-605 in Norwalk.
• I-205 runs from I-580 to I-5, forming the north side of a triangle around Tracy.
• I-405 is a bypass route of I-5, running along the southern and western parts of Greater Los Angeles from Irvine north to near San Fernando.
• I-505 runs from I-80 in Vacaville north to I-5 near Dunnigan.
• I-605 runs from I-405 and SR 22 in Seal Beach north to I-210 in Duarte.
• I-805 is a bypass route of I-5 in the San Diego area, running from the San Diego district of San Ysidro near the Mexico–U.S. border to near Del Mar.

There is also one unsigned auxiliary Interstate Highway: I-305 runs along US 50 from I-80 in West Sacramento to SR 99 in Sacramento.

There is one future auxiliary Interstate Highway: SR 905 from I-5 in San Diego to the Mexico–U.S. border in Otay Mesa is proposed to become I-905.

There are also several business routes of Interstate 5 in California, primarily parts of the original routing of US 99.

• California Roads portal