.svg) Interstate 10 | ||||
|---|---|---|---|---|
| Pearl Harbor Memorial Highway | ||||
 I-10 highlighted in red | ||||
| Route information | ||||
| Maintained byCaltrans | ||||
| Length | 242.54 mi[1] (390.33 km) | |||
| Existed | August 7, 1947, byFHWA[2] July 1, 1964, byCaltrans[3]–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| West end |  SR 1 inSanta Monica | |||
| Major intersections | ||||
| East end |   I-10 /US 95 atArizona state line inEhrenberg, AZ | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | Los Angeles,San Bernardino,Riverside | |||
| Highway system | ||||
| ||||
Interstate 10 (I-10) is a transcontinentalInterstate Highway in the United States, stretching fromSanta Monica, California, toJacksonville, Florida. The segment of I-10 in California, also known as thePearl Harbor Memorial Highway,[4] runs east from Santa Monica throughLos Angeles,San Bernardino, andPalm Springs before crossing into the state ofArizona. In theGreater Los Angeles area, it is known as theSanta Monica andSan Bernardino freeways, linked by a shortconcurrency onI-5 (Golden State Freeway) at theEast Los Angeles Interchange. I-10 also has parts designated as theRosa Parks andSonny Bono Memorial freeways.[5] Some parts were also formerly designated as theChristopher Columbus Transcontinental Highway.[6] However, theCalifornia State Legislature removed this designation following the passage of a bill on August 31, 2022.[7][8] I-10 is also known colloquially as "the 10" toSouthern California residents(See alsoCalifornia English § Freeways).
The entirety of Interstate 10 in California is defined in section 310 of theCalifornia Streets and Highways Code asRoute 10, and that the highway is from:[9]
(a) Route 1 [State Route 1 (SR 1)] inSanta Monica to Route 5 [I-5] near Seventh Street in Los Angeles.
(b) Route 101 [US Route 101 (US 101)] nearMission Road in Los Angeles to the Arizona state line at theColorado River via the vicinity ofMonterey Park,Pomona,Colton,Indio, andChiriaco Summit and viaBlythe.
Because I-10 west of I-5 cannot access US 101, and I-10 east of I-5 cannot access US 101 southbound, signage instead directs motorists to the continuation of I-10 via I-5 between theEast Los Angeles Interchange and the Santa Monica Freeway. TheFederal Highway Administration (FHWA)'s Interstate Highway route logs, along with most maps, also indicate that I-10 iscosigned along this segment,[1] despite the legal definition. The short unsigned section of Route 10 between Route 5 and Route 101, which was formerly defined as Route 110 (signed as I-110) until 1968, carries overhead signage for I-10 eastbound and for US 101 westbound.
I-10 is part of theCalifornia Freeway and Expressway System[10] and is part of theNational Highway System,[11] a network of highways that are considered essential to the country's economy, defense, and mobility by the FHWA.[12] I-10 is eligible to be included in theState Scenic Highway System,[13] but it is not officially designated as a scenic highway by Caltrans.[14] The Santa Monica Freeway is I-10 from SR 1 to I-5, as named by the State Highway Commission on April 25, 1957. The section between theHarbor (I-110) andSan Diego (I-405) freeways is also signed as the Rosa Parks Freeway, after theAfrican-American civil rights activist. The I-10 freeway is signed as theChristopher Columbus Transcontinental Highway in Santa Monica.[15] The removal of this designation, however, may result in the eventual removal of this signage.[7][8]
The Santa Monica Freeway is the westernmost segment of I-10, beginning at the east end of theMcClure Tunnel inSanta Monica and ending southeast ofDowntown Los Angeles at theEast Los Angeles Interchange.
I-10 begins its eastward journey in the city of Santa Monica after SR 1 turns east through the McClure Tunnel. Note that the McClure Tunnel is part of SR 1 in its entirety, and the western terminus of I-10 is to the east of the tunnel at 4th Street.[16] SR 1 then exits onto Lincoln Boulevard and heads south while I-10 continues east. Soon after it enters the city of Los Angeles, I-10 has a four-level interchange with I-405. I-10 then continues throughSawtelle,Rancho Park,Cheviot Hills,Beverlywood, and Crestview inWest Los Angeles;Lafayette Square andWellington Square inMid City; andArlington Heights,West Adams, andJefferson Park into Downtown Los Angeles. On the western edge of downtown at theDosan Ahn Chang Ho Memorial Interchange, I-10 has an interchange withI-110 to the south andSR 110 to the north. I-10 then travels along the southern edge of downtown to the East Los Angeles Interchange.[17][18]
At the East Los Angeles Interchange,SR 60 diverges east towardRiverside andPomona. I-10 then turns north, running concurrently withI-5 for approximately 1.5 miles (2.4 km). Then, I-10 heads east and merges with the traffic from the spur to US 101 onto the San Bernardino Freeway.[17][18]
The freeway is 14 lanes wide (two local and five express lanes in each direction) from the Harbor Freeway (I-110) interchange to the Arlington Avenue offramp. Most of these lanes are full at peak travel times (even on Saturdays). The remainder of the freeway varies between eight and 10 lanes in width. The whole freeway opened in 1965 with four to six lanes, with a formal dedication held in 1966.[19]
While the construction of theCentury Freeway several miles to the south reducedtraffic congestion to a considerable amount by creating an alternate route from downtown toLos Angeles International Airport, the Santa Monica Freeway is still one of the busiest freeways in the world. All three freeway-to-freeway interchanges along its length are notorious for their congestion and are routinely ranked among the top 10 most congested spots in the US.[citation needed]
Due to the high traffic volume,car accidents are so common that Caltrans has constructed special accident investigation sites separated from the freeway by fences. These enable theCalifornia Highway Patrol to quickly clear accidents from the through traffic lanes, and the fences reduce congestion by preventingrubbernecking (in which vehicles slow down so their occupants can watch the accident investigation).[20]
The Santa Monica Freeway is considered the border betweenDowntown andSouth Los Angeles. Part of the freeway also skims theByzantine-Latino Quarter.
I-10 heads east from theEast Los Angeles Interchange toI-710 inMonterey Park. It then continues through theSan Gabriel Valley suburbs ofAlhambra,Rosemead,San Gabriel,El Monte, andBaldwin Park before intersecting withI-605. It then travels throughWest Covina, briefly entersCovina, and then travels up the Kellogg Hill intoSan Dimas, where I-10 intersects withSR 57 (formerly part ofI-210) andSR 71 at theKellogg Interchange. I-10 then heads east through Pomona andClaremont, leaving Los Angeles County to enterSan Bernardino County.[17][18]
In San Bernardino County, I-10 travels throughMontclair,Upland, andOntario, providing access toOntario International Airport. I-10 then has a four-level interchange withI-15 before traveling throughFontana,Rialto, andColton. I-10 then intersects withI-215, where the San Bernardino Freeway ends, before briefly enteringSan Bernardino city proper and traveling throughLoma Linda andRedlands. In Redlands, I-10 intersects with theSR 210 freeway (future I-210) and withSR 38 before enteringYucaipa and eventuallyRiverside County.[17][21]
In 2019,SBCTA planned to add two more interchanges inFontana at Beech and Alder Avenues to reduce congestion at the Sierra and Cherry avenue exits.[22]
In Riverside County, I-10 goes throughCalimesa before enteringBeaumont and merging with the eastern end of SR 60 (itself formerly the California segment ofUS 60). InBanning, I-10 has a diamond intersection withSR 243 before passing throughSan Gorgonio Pass between theSan Bernardino andSan Jacinto mountains (where the vegetation makes a rapid change between Mediterranean and desert ecology) and enteringPalm Springs. The next 35 miles (56 km) of the freeway, betweenSR 111 and Dillon Road, was named theSonny Bono Memorial Freeway in 2002.[5] Although I-10 intersects with the northern terminus of SR 111, the major artery to Palm Springs, it mostly bypasses the city, then connects toSR 62, a major east–west route through theColorado Desert. I-10 cuts throughCathedral City and passes just outside the northern city limits ofRancho Mirage,Palm Desert, andLa Quinta before enteringIndio. I-10 then has an interchange inCoachella with the northern end of theSR 86 expressway, which also leads to SR 111.
Several miles east and roughly halfway between Indio andBlythe, in the community ofDesert Center, I-10 intersects withSR 177, a turnoff that leads toDesert Center Airport and connects to SR 62. Three miles (4.8 km) south of I-10 at theWiley's Well exit, between Desert Center and Blythe, are theChuckawalla Valley andIronwood state prisons. Near the Arizona state line, I-10 meets the terminus ofSR 78. In the city of Blythe, I-10 runs concurrently withUS 95 as both routes cross theColorado River intoArizona.[17][21]
The speed limit on the entire Riverside County segment of I-10 is 70 mph (110 km/h). I-10 westbound is usually signed as toward San Bernardino and/or Los Angeles in theColorado Desert. Eastbound, in the San Gorgonio Pass, the signage indicates "Indio, Other Desert Cities" and indicates "Blythe" after Indio; the first sign forPhoenix does not occur until Indio.[23][24]
There are two sections ofhigh-occupancy toll (HOT) lanes along I-10, one in Los Angeles County and the other in San Bernardino County.
In Los Angeles County, theEl Monte Busway is a grade-separated, shared-use HOT andexpress bus corridor running along the San Bernardino Freeway between Alameda Street nearUnion Station inDowntown Los Angeles and a point west ofI-605 inEl Monte. From Alameda Street toI-710, the El Monte Busway runs parallel to the north side of the freeway. After the I-710 interchange, these lanes merge back to themedian of I-10. Eastbound busses exit atEl Monte station in El Monte before the HOT lanes for other vehicles end west of I-605.[25] The entire bus route of the El Monte Busway between Alameda Street and El Monte station's bus entrance at Santa Anita Avenue carries the hidden state designation ofRoute 10S (for "supplemental").[26]
The segment of HOT lanes in San Bernardino County opened in 2024, and runs between Monte Vista Avenue and Etiwanda Avenue at theOntario–Fontana city limit.[27]
As of January 2025[update], some toll polices differ between the counties. The HOT lanes in Los Angeles County are part of theMetro ExpressLanes project administered by theLos Angeles County Metropolitan Transportation Authority (LA Metro). The ones in San Bernardino County, branded as the San Bernardino Express Lanes, are operated by theSan Bernardino County Transportation Authority (SBCTA) and useTransportation Corridor Agencies (TCA) as the processing partner. In both segments, solo drivers are tolled using acongestion pricing system based on the real-time levels of traffic. Carpools with three or more people and motorcycles are not charged. For two-person carpools using the Los Angeles County segment, they are charged the posted toll during the peak hours between 5:00 am and 9:00 am, and between 4:00 pm and 7:00 pm; no toll is charged during off-peak hours. Two-person carpools using the San Bernardino County segment do not receive any discount. All tolls are collected using anopen road tolling system, and therefore there are no toll booths to receive cash. Each vehicle using the HOT lanes is required to carry aFasTrakFlex transponder with its switch set to indicate the number of the vehicle's occupants (1, 2, or 3+). Those with clean air vehicles need to apply to get discounts (15 percent in Los Angeles County and 10 percent in San Bernardino County). Solo drivers may also use the FasTrak standard tag without the switch.[25][28][29]
Drivers without any FasTrak tag will be assessed a toll violation regardless of whether they qualified for free. For those violators on the San Bernardino County segment, they will get TCA's benefit of being able to pay online 5 days after their trip without an additional toll violation penalty.[30]
There are longer-term plans to have a 64-mile (103 km) continuous HOT lanes network between Alameda Street in Downtown Los Angeles and Ford Street inRedlands. This expansion is planned in four phases. As of 2024[update], the proposed segment in Los Angeles County to convert the new HOV lanes to HOT lanes and bridge the gap between I-605 and Monte Vista Avenue is under environmental review,[31] the section from Etiwanda Avenue to Pepper Avenue inColton is planned to break ground in 2025, and the segment from Pepper Avenue to Ford Street in Redlands is still in the planning stage.[32]
What is now I-10 east of Los Angeles was generally part of theAtlantic and Pacific Highway, one of many transcontinentalnational auto trails. By 1926, when theUS Numbered Highways were assigned, the road across the desert east ofIndio wasunimproved, while the road from Indio west toSan Bernardino (as well as various roads west toLos Angeles) was paved.[33] In late 1926,US 99 was designated along the section of road from San Bernardino to Indio, where it turned south along presentSR 86 on the west side of theSalton Sea.[34] West of San Bernardino, US 99 ran to Los Angeles,concurrent withUS 66 (viaPasadena) before turning north; this route to Los Angeles is north of the later alignment of I-10.[35] The piece of this between San Bernardino and Indio was defined in 1915 asLegislative Route 26 (LR 26). (It continued south from Indio viaEl Centro toHeber. A 1931 extension took it south toCalexico on presentSR 111.)[36]
The route from Indio viaMecca to theArizona state line nearBlythe was defined in 1919 as pre-1964 LR 64. (Later extensions took LR 64 west along presentSR 74; a 1931 cutoff bypassed Mecca to the north.) LR 26 was extended west from San Bernardino to Los Angeles in 1931, running along an alignment south of the existing US 66/US 99.[36] Neither of these was a signed route until around 1932, whenUS 60 was extended west from Arizona to Los Angeles, running along LR 64 to Indio, LR 26 (with US 99) toBeaumont, pre-1964 LR 19 toPomona, and LR 26 to Los Angeles. (The original alignment of LR 26 ran roughly whereSR 60 now is west of Pomona, but an alignment close to present I-10 opened around 1934).[citation needed]
Thus, in 1931, what is now I-10 east of Los Angeles had been defined as LR 26 from Los Angeles to Indio and LR 64 from Indio to Arizona. It was signed as US 99 from San Bernardino to Indio, and US 60 came along around 1932 from Los Angeles to Pomona and from Beaumont to Arizona.US 70 was extended west from Arizonac. 1936 along the whole route to Los Angeles,[citation needed] and, between 1933 and 1942,[citation needed] US 99 moved from US 66 to present I-10 between San Bernardino and Los Angeles, forming a three-wayconcurrency between Pomona and Los Angeles. Old alignments and names includeValley Boulevard, Ramona Boulevard, andGarvey Avenue.
I-10 holds the distinction of being the first freeway in Los Angeles. A four-mile (6.4 km) section of today's freeway was built between 1933 and 1935 at a cost of $877,000 (equivalent to $15.7 million in 2024[37]). The "Ramona Boulevard" highway linked downtown Los Angeles to the communities of the southern San Gabriel Valley. The roadway, which opened on April 20, 1935, was dubbed the "Air Line route" and was seen as a major achievement in traffic design.[38]
The route east from Los Angeles was added to theInterstate Highway System on August 7, 1957. It was assigned the I-10 number on August 14, 1957, and the short piece west of I-5 was approved as I-110 on November 10, 1958.[2] By then, most if not all of theSan Bernardino Freeway had been completed, and I-10 was signed along the existingfreeway along with US 70, US 99, and part of US 60. US 70 and US 99 were removed in the1964 renumbering, while US 60 was removed in 1972, leaving only I-10.
The part west of Downtown Los Angeles waspre-1964 LR 173, defined in 1933 fromSanta Monica to Downtown Los Angeles.[39] It was signed asSR 26 by 1942, running primarilyOlympic Boulevard.[citation needed] It was later replaced by theSanta Monica Freeway and added to the Interstate Highway System on September 15, 1955. It too was assigned the I-10 number on August 14, 1957.[2] It was completedc. 1964[40] and became I-10 in the 1964 renumbering.
Portions of the Santa Monica Freeway going over La Cienega Boulevard collapsed after theNorthridge earthquake on January 17, 1994, and were rebuilt using new seismic-resistant bridge designs.[41]
TheEl Monte Busway was converted toHOT lanes in 2013 as part of theMetro ExpressLanes project.[42]
On July 19, 2015, a bridge carrying the eastbound lanes of I-10 nearDesert Center collapsed from floodwater from the remnants ofHurricane Dolores, trapping a vehicle.[43][44]
Shortly after midnight of November 11, 2023, a mile-long (1.6 km) segment of the freeway in Downtown Los Angeles betweenAlameda Street and Santa Fe Avenue suffered significant damage due to a fire at apallet yard underneath the freeway. The fire melted the freeway's guardrails and damaged the supporting concrete columns.[45][46] TheLos Angeles Times reported a couple of days later that "sanitizer accumulated during the height of theCOVID-19 pandemic was stored under the overpass and helped fuel the flames".[47] GovernorGavin Newsom declared astate of emergency in response to the fire; the freeway was reopened after eight days, far ahead of the original five-week estimate.[48]
The I-10 is part of the auto tour route of theJuan Bautista de Anza National Historic Trail, aNational Park Service unit in the US nationalHistoric andMillennium trail programs. In 2005,Caltrans began posting signs on roads that overlap with the historic 1776Juan Bautista de Anza trail route, so that California drivers can now follow the trail.
| County | Location | mi[16] | km | Exit[16] | Destinations | Notes |
|---|---|---|---|---|---|---|
| Los Angeles | Santa Monica | 0.00 | 0.00 |  SR 1 north (Pacific Coast Highway) –Oxnard | Western end of SR 1concurrency; former US 101 Alternate; western end of I-10/Santa Monica Freeway | |
| 1A | 4th Street / 5th Street | Westbound exit and eastbound entrance | ||||
| 0.96 | 1.54 | 1B |   Lincoln Boulevard toSR 1 south | Eastern end of SR 1 concurrency; signed as exit 1A eastbound; formerSR 2 /US 66 / US 101 Alternate | ||
| 20th Street | Eastbound exit and westbound entrance | |||||
| 2.08 | 3.35 | 1C | Cloverfield Boulevard | Westbound exit and eastbound entrance | ||
| 2.30 | 3.70 | 2A | Centinela Avenue | Signed as exit 2 eastbound | ||
| Los Angeles | 2.35 | 3.78 | 2B-C | Bundy Drive | Westbound exits and eastbound entrance; signed as exits 2B (south) and 2C (north) | |
| 3.11 | 5.01 | 3A |   I-405 north (San Diego Freeway) –Sacramento | I-405 north exit 53B, south exit 53 | ||
| 3.29 | 5.29 | 3B |   I-405 south (San Diego Freeway) –LAX Airport,Long Beach | |||
| 4.24 | 6.82 | 4 | Overland Avenue / National Boulevard | National Boulevard not signed westbound | ||
| 5.05 | 8.13 | 5 | National Boulevard | Westbound exit and eastbound entrance | ||
| 5.76 | 9.27 | 6 | Robertson Boulevard –Culver City | |||
| 6.81 | 10.96 | 7A |  SR 187 (Venice Boulevard) /La Cienega Boulevard | SR 187 / Venice Boulevard not signed eastbound | ||
| 7.00 | 11.27 | 7B | Fairfax Avenue /Washington Boulevard | Washington Boulevard not signed eastbound | ||
| 8.27 | 13.31 | 8 | La Brea Avenue | |||
| 9.23 | 14.85 | 9 | Crenshaw Boulevard | |||
| 10.16 | 16.35 | 10 | Arlington Avenue | |||
| 10.66 | 17.16 | 11 | Western Avenue /Normandie Avenue | |||
| 11.64– 12.25 | 18.73– 19.71 | 12 | Vermont Avenue / Hoover Street | |||
| 12.68 | 20.41 | 13A |  I-110 south (Harbor Freeway south) / Grand Avenue –San Pedro,Convention Center | Dosan Ahn Chang Ho Memorial Interchange; signed as exit 13 westbound; Grand Avenue is not accessible westbound; Pico Boulevard is not accessible eastbound; I-110 exit 21 | ||
| 12.73 | 20.49 | 13B |  SR 110 north (Harbor Freeway north) /Pico Boulevard –Pasadena,Downtown,Convention Center | |||
| 13.64 | 21.95 | 14A | Maple Avenue | Eastbound exit and westbound entrance | ||
| Los Angeles Street –Convention Center | Westbound exit and eastbound entrance | |||||
| 14.22 | 22.88 | 14B | San Pedro Street | No westbound entrance | ||
| 14.55 | 23.42 | 15A | Central Avenue | |||
| 15.19 | 24.45 | 15B | Alameda Street | |||
| 15.55 | 25.03 | 16A | Mateo Street / Santa Fe Avenue | |||
| 16.23 | 26.12 | 16B |   SR 60 east (Pomona Freeway) –Pomona | Eastbound exit and westbound entrance; western end ofEast Los Angeles Interchange; SR 60 west exit 1A; I-5 north exit 134A | ||
 I-5 south (Santa Ana Freeway) –Santa Ana | ||||||
| — | Boyle Avenue | Eastbound exit only | ||||
| 16B | I-5 south (Santa Ana Freeway) / Soto Street –Santa Ana | Western end of I-5 overlap; eastern end ofEast Los Angeles Interchange proper; westbound exit and eastbound entrance; eastern end of Santa Monica Freeway; SR 60 west exit 1E | ||||
| SR 60 east (Pomona Freeway) –Pomona | ||||||
| 135A[a] | Fourth Street | |||||
| 135B[a] | Cesar Chavez Avenue | Eastbound exit and westbound entrance; formerly Brooklyn Avenue | ||||
| 19.00– 19.07 | 30.58– 30.69 | 19A | State Street | Westbound left exit and eastbound entrance | ||
| 19B | I-5 north (Golden State Freeway) –Sacramento | Eastern end of I-5 overlap; 5-10 Split portion of the East Los Angeles Interchange; I-5 north exit 135C, south exit 135B | ||||
   San Bernardino Freeway spur toUS 101 north (Santa Ana Freeway) –Los Angeles | Westbound left exit and eastbound entrance; US 101 exit 1D | |||||
| 19C | Soto Street | No eastbound entrance; signed as exit 19 eastbound | ||||
| — | Marengo Street | Eastbound entrance only | ||||
| East Los Angeles | 19.59 | 31.53 | 20A | City Terrace Drive | Eastbound exit and westbound entrance | |
| 20.24 | 32.57 | 20B | Eastern Avenue | Westbound access is part of the I-710 exit; servesCSU Los Angeles | ||
| Monterey Park | 20.77 | 33.43 | 21 |  I-710 (Long Beach Freeway) /Valley Boulevard –Long Beach | Eastbound exit provides direct access to Ramona Road; I-710 north exit 22, south exits 22A-B | |
| Alhambra | — | El Monte Busway (SR 10S west)[26] toUS 101 north /Alameda Street | Express Lanes access only; westbound exit and eastbound entrance | |||
| — | I-10 LA Metro Express Lanes | Westernmost access point from mainline I-10 | ||||
| 21.70 | 34.92 | 22 | Fremont Avenue –South Pasadena | |||
| 22.72 | 36.56 | 23A | Atlantic Boulevard –Monterey Park | |||
| 23.38 | 37.63 | 23B | Garfield Avenue | |||
| Alhambra–San Gabriel– Monterey Park tripoint | 24.22 | 38.98 | 24 | New Avenue | ||
| San Gabriel–Rosemead line | 24.72 | 39.78 | — | Del Mar Avenue | Express Lanes access only; eastbound exit and westbound entrance | |
| 25A | Del Mar Avenue | Previously exit 25B | ||||
| 25.23 | 40.60 | 25B | San Gabriel Boulevard | |||
| Rosemead | 25.73 | 41.41 | 26A | Walnut Grove Avenue | ||
| Rosemead–El Monte line | 26.25 | 42.25 | 26B |  SR 19 (Rosemead Boulevard) –Pasadena | Eastbound exit provides direct access to Flair Drive | |
| 27.35 | 44.02 | 27 | Temple City Boulevard | Westbound signage; previously exit 28 | ||
| Baldwin Avenue | Eastbound signage | |||||
| — | El Monte Busway (SR 10S east)[26] toEl Monte station | Buses only via Express Lanes; eastbound exit and westbound entrance | ||||
| El Monte | 28.06 | 45.16 | 28 | Santa Anita Avenue | Previously exit 29 | |
| 28.89 | 46.49 | 29A | Peck Road South | |||
| 28.94– 29.22 | 46.57– 47.03 | 29B | Peck Road North,Valley Boulevard | Westbound exits signed as 29B (Valley Boulevard) and 29C (Peck Road North) | ||
| — | I-10 LA Metro Express Lanes | Eastern end of Express Lanes | ||||
| — | I-10 LA Metro Express Lanes (eastern expansion) | Western end of proposed expansion[31] | ||||
| 29.97 | 48.23 | 30 | Garvey Avenue, Durfee Avenue | Westbound exit and eastbound entrance | ||
| Baldwin Park | 30.54 | 49.15 | 31A |  I-605 south (San Gabriel River Freeway) | Signed as exit 31A westbound; I-605 exit 22 | |
| 30.59 | 49.23 | 31B | I-605 north (San Gabriel River Freeway) | |||
| 30.59– 30.93 | 49.23– 49.78 | 31C | Frazier Street | Signed as exit 31B westbound; no eastbound entrance | ||
| 31.61 | 50.87 | 32A | Baldwin Park Boulevard | |||
| 32.05 | 51.58 | 32B | Francisquito Avenue –La Puente | No eastbound entrance; previously exit 33A | ||
| 32.74 | 52.69 | 33 | Puente Avenue –Industry | |||
| West Covina | 33.85 | 54.48 | 34A | Pacific Avenue, West Covina Parkway | Signed as exit 34 eastbound | |
| 34.24 | 55.10 | 34B | Sunset Avenue | Westbound exit only | ||
| 34.78 | 55.97 | 35 | Vincent Avenue | |||
| 35.89 | 57.76 | 36 |  SR 39 (Azusa Avenue) | |||
| 36.87 | 59.34 | 37A | Citrus Street | |||
| 37.40 | 60.19 | 37B | Barranca Street | |||
| 37.90 | 60.99 | 38A | Grand Avenue | |||
| West Covina–Covina line | 38.39 | 61.78 | 38B | Holt Avenue | ||
| Covina–San Dimas line | 39.85 | 64.13 | 40 | Via Verde | ||
| Pomona | 41.41 | 66.64 | 41 | Kellogg Drive –Cal Poly University | No eastbound entrance | |
| Pomona–San Dimas line | 41.83 | 67.32 | 42A |    SR 57 (Orange Freeway) toI-210 (Foothill Freeway) –Santa Ana | Western end ofKellogg Interchange; signed as exit 42 westbound; SR 57 north is formerI-210; SR 57 north exit 21, south exits 22A-B | |
| 42.07 | 67.71 | 42B |  SR 71 south (Chino Valley Freeway) / Campus Drive –Corona | Eastbound exit and westbound entrance; eastern end ofKellogg Interchange; SR 71 north exit 15 | ||
| Pomona | 43.05– 43.58 | 69.28– 70.14 | 44 | Fairplex Drive, Dudley Street | Signed as exits 43 (Fairplex Drive) and 44 (Dudley Street) eastbound; Fairplex Drive was formerly Ganesha Boulevard;[49] servesFairplex | |
| 44.67 | 71.89 | 45A | White Avenue | Eastbound exit and westbound entrance; former exit 45 | ||
| 45.12 | 72.61 | 45B | Garey Avenue, Orange Grove Avenue | Signed as exit 45 westbound; Orange Grove Avenue not signed eastbound | ||
| 45.80 | 73.71 | 46 | Towne Avenue | |||
| Claremont | 47.13 | 75.85 | 47 | Indian Hill Boulevard | ||
| San Bernardino | Montclair | — | I-10 LA Metro Express Lanes (eastern expansion) | Western end of proposed expansion[31] | ||
| — | I-10 San Bernardino Express Lanes | Western end of express lane; opened in 2024[27] | ||||
| 48.34 | 77.80 | 48 | Monte Vista Avenue | |||
| 48.89 | 78.68 | 49 | Central Avenue | |||
| Ontario–Upland line | 50.03 | 80.52 | 50 | Mountain Avenue –Mount Baldy | ||
| 51.13 | 82.29 | 51 |  SR 83 (Euclid Avenue) –Ontario,Upland | |||
| Ontario | 52.90 | 85.13 | 53 | 4th Street | ||
| 53.76 | 86.52 | 54 | Vineyard Avenue | |||
| 54.82 | 88.22 | 55A | Holt Boulevard | Westbound exit and eastbound entrance; formerUS 99 north | ||
| 55B | Archibald Avenue –Ontario Airport | Single-point urban interchange, signed as exit 55 eastbound | ||||
| 55.83 | 89.85 | 56 | Haven Avenue | |||
| 56.84 | 91.48 | 57 | Milliken Avenue | |||
| 57.60 | 92.70 | 58A |  I-15 north (Ontario Freeway) –Barstow | Signed as exit 58 westbound; I-15 exits 109A-B | ||
| 57.60 | 92.70 | 58B | I-15 south (Ontario Freeway) –San Diego | |||
| Ontario–Fontana line | 58.79 | 94.61 | 59 | Etiwanda Avenue,Valley Boulevard | Valley Boulevard was formerUS 99 south | |
| — | I-10 San Bernardino Express Lanes | Eastern end of express lane; opened in 2024[27] | ||||
| — | I-10 San Bernardino Express Lanes (eastern expansion) | Western end of proposed expansion[32] | ||||
| Fontana | 60.83 | 97.90 | 61 | Cherry Avenue | ||
| 62.84 | 101.13 | 63 | Citrus Avenue | |||
| 63.88 | 102.80 | 64 | Sierra Avenue | Single-point urban interchange | ||
| Bloomington | 66.15 | 106.46 | 66 | Cedar Avenue –Bloomington | ||
| Rialto | 67.63 | 108.84 | 68 | Riverside Avenue | ||
| Colton | 68.63 | 110.45 | 69 | Pepper Avenue | ||
| 69.62 | 112.04 | 70A | Rancho Avenue | |||
| 70.28 | 113.10 | 70B | 9th Street –Downtown Colton | |||
| 70.91 | 114.12 | 71 | Mt. Vernon Avenue | |||
| 71.90 | 115.71 | 72 |  I-215 –San Bernardino,Barstow,Riverside | FormerI-15E /US 91 /US 395; eastern end of San Bernardino Freeway;I-215 north exit 40A-B, south exit 40 | ||
| San Bernardino | 72.92 | 117.35 | 73 | Waterman Avenue | Signed as exits 73A (south) and 73B (north) eastbound | |
| San Bernardino–Loma Linda line | 73.93 | 118.98 | 74 | Tippecanoe Avenue, Anderson Street –San Bernardino International Airport,Loma Linda University | ||
| Loma Linda | 74.96 | 120.64 | 75 | Mountain View Avenue | ||
| Redlands | 75.96 | 122.25 | 76 | California Street | ||
| 76.97 | 123.87 | 77A | Alabama Street | |||
| 77.29 | 124.39 | 77B |    SR 210 west (Foothill Freeway) toSR 330 north –Pasadena,Running Springs | FormerSR 30 west; SR 210 east exits 85A-B; future I-210 west; signed as exit 77C westbound | ||
| 77.45 | 124.64 | 77C | Tennessee Street | Signed as exit 77B westbound | ||
| 78.56 | 126.43 | 79 |  SR 38 east (Orange Street) / Eureka Street | Eastbound signage | ||
| 6th Street toSR 38 –Big Bear | Westbound signage | |||||
| 79.53 | 127.99 | 80 | University Street | Eastbound signage | ||
| Cypress Avenue | Westbound signage | |||||
| 80.79 | 130.02 | 81 | Ford Street, Redlands Boulevard | Redlands Boulevard is formerUS 99 north | ||
| — | I-10 San Bernardino Express Lanes (eastern expansion) | Eastern end of proposed expansion[32] | ||||
| 81.95 | 131.89 | 82 | Wabash Avenue | Westbound exit and eastbound entrance | ||
| Yucaipa | 83.16 | 133.83 | 83 | Yucaipa Boulevard | ||
| 84.69 | 136.30 | 85 | Oak Glen Road, Live Oak Canyon Road | |||
| 85.63 | 137.81 | Wildwood Rest Area (eastbound only) | ||||
| San Bernardino–Riverside county line | Yucaipa–Calimesa line | 86.84 | 139.76 | 87 | County Line Road | |
| Riverside | Calimesa | 87.68 | 141.11 | 88 | Calimesa Boulevard | FormerUS 99 north |
| 88.74 | 142.81 | 89 | Singleton Road | Westbound exit and eastbound entrance | ||
| 89.87 | 144.63 | 90 | Cherry Valley Boulevard –Cherry Valley | |||
| 90.88 | 146.26 | Brookside Rest Area (westbound only) | ||||
| Beaumont | 92.35 | 148.62 | 92 | Oak Valley Parkway | ||
| 93.49 | 150.46 | 93 | SR 60 west (Moreno Valley Freeway) –Riverside | Left exit westbound; no westbound entrance; formerUS 60 west | ||
| 6th Street | Eastbound exit and westbound entrance; formerUS 60 east /US 99 south | |||||
| 94.39 | 151.91 | 94 |  SR 79 south (Beaumont Avenue) | |||
| 95.03 | 152.94 | 95 | Pennsylvania Avenue | Westbound exit and eastbound entrance | ||
| Beaumont–Banning line | 96.13 | 154.71 | 96 | Highland Springs Avenue | ||
| Banning | 98.15 | 157.96 | 98 | Sunset Avenue | ||
| 98.78 | 158.97 | 99 | 22nd Street –Downtown Banning | |||
| 99.67 | 160.40 | 100 |  SR 243 south (8th Street) –Idyllwild | |||
| 100.68 | 162.03 | 101 | Hargrave Street –Idyllwild | |||
| 101.58 | 163.48 | 102 | Ramsey Street | Westbound exit and eastbound entrance; formerUS 60 west /US 99 north | ||
| Banning–Cabazon line | 103.36 | 166.34 | 103 | Malki Road | Formerly Fields Road | |
| Cabazon | 104.48 | 168.14 | 104 | Morongo Trail –Cabazon | FormerUS 99 south; formerly Apache Trail | |
| 106.22 | 170.94 | 106 | Main Street –Cabazon | FormerUS 99 north | ||
| | 111.37 | 179.23 | 110 | Haugen–Lehmann Way | Formerly Verbena Avenue; formerly exit 111 | |
| Palm Springs | 112.02 | 180.28 | 111 |  SR 111 south –Palm Springs | Eastbound exit and westbound entrance; formerly exit 112 | |
| 113.07 | 181.97 | Whitewater Rest Area | ||||
| 114.05 | 183.55 | 114 | Whitewater (Tipton Road, Whitewater Cutoff) | |||
| | 116.51 | 187.50 | 117 |  SR 62 east –Twentynine Palms,Yucca Valley | Signed as "29 Palms" | |
| Palm Springs–Desert Hot Springs line | 119.95 | 193.04 | 120 | Indian Canyon Drive –North Palm Springs | Formerly Indian Avenue | |
| 122.96 | 197.88 | 123 | Gene Autry Trail, Palm Drive –Desert Hot Springs | |||
| Cathedral City | 126.31 | 203.28 | 126 | Date Palm Drive | ||
| 130.18 | 209.50 | 130 | Bob Hope Drive, Ramon Road –Palm Springs | |||
| Palm Desert | 131.33 | 211.36 | 131 | Monterey Avenue –Thousand Palms | ||
| 133 | Portola Avenue | Proposed interchange[50] | ||||
| 133.71 | 215.19 | 134 | Cook Street | |||
| 137.27 | 220.91 | 137 | Washington Street | |||
| Indio | 139.16 | 223.96 | 139 | Indio Boulevard, Jefferson Street | Indio Boulevard is formerUS 99 south /SR 86 south | |
| 141.56 | 227.82 | 142 | Monroe Street –Central Indio | |||
| 142.56 | 229.43 | 143 | Jackson Street | |||
| 143.77 | 231.38 | 144 | Golf Center Parkway toSR 111 | |||
| 144.65 | 232.79 | 145 |  SR 86 south (Expressway) –Brawley,El Centro | Eastbound exit and westbound entrance; formerSR 86S | ||
| Coachella | 145.71 | 234.50 | 146 | Dillon Road toSR 86 south (Expressway) –Coachella | "To SR 86" not signed eastbound | |
| 151 | Avenue 50 | Proposed interchange[51] | ||||
| | 158.82 | 255.60 | Cactus City Rest Area | |||
| | 161.94 | 260.62 | 162 | Frontage Road | ||
| | 168.37 | 270.97 | 168 | Cottonwood Springs Road –Mecca,Twentynine Palms | FormerSR 195 | |
| | 172.89 | 278.24 | 173 | Summit Road –Chiriaco Summit | ||
| | 176.94 | 284.76 | 177 | Hayfield Road | ||
| | 181.87 | 292.69 | 182 | Red Cloud Road | ||
| | 188.83 | 303.89 | 189 | Eagle Mountain Road | ||
| Desert Center | 191.92 | 308.87 | 192 |  SR 177 north (Rice Road) –Desert Center | ||
| | 201.22 | 323.83 | 201 | Corn Springs Road | ||
| | 216.76 | 348.84 | 217 | Ford Dry Lake Road | ||
| | 221.87 | 357.07 | 222 | Wiley's Well Road | ||
| | 231.94 | 373.27 | 232 | Mesa Drive –Blythe Airport,Mesa Verde | FormerUS 60 east | |
| Blythe | 235.97 | 379.76 | 236 |  SR 78 west (Neighbours Boulevard south) /I-10 BL east (Neighbours Boulevard north) –Brawley | ||
| 238.97 | 384.58 | 239 | Lovekin Boulevard | |||
| 239.98 | 386.21 | 240 | 7th Street | |||
| 240.99 | 387.84 | 241 |  US 95 north (Intake Boulevard) –Needles, Fairgrounds | Western end of US 95 overlap | ||
| 242 | E. Hobson Way (I-10 BL) | Westbound exit and entrance | ||||
| 242.92 | 390.94 | 243 | Riviera Drive /I-10 BL west | Eastbound exit and entrance; westbound exit and entrance replaced by exit 242; I-10 Bus. is formerUS 60 west | ||
| Agricultural Inspection Station (westbound only) | ||||||
| Colorado River | 243.31 | 391.57 | California–Arizona line | |||
  I-10 east /US 95 south –Phoenix,Yuma | Continuation intoEhrenberg, Arizona | |||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
Interstate 10 Spur to US 101 | |
|---|---|
| Location | Los Angeles |
| Length | 1.0 mi (1.6 km) |
| Existed | 1968–present |
.svg) Interstate 110 | |
|---|---|
| Existed | 1958–1968 |
The legislative definition of Route 10 includes a spur fromI-5 (theGolden State Freeway) west toUS 101 (theSanta Ana Freeway) near downtown Los Angeles. This section of roadway, the westernmost part of theSan Bernardino Freeway, was in fact part of the original San Bernardino Freeway, carryingUS 60/US 70/US 99 long before the Golden State Freeway opened. It was added to theInterstate Highway System by 1958 as I-110, but in 1968 it was removed from the system, becoming a Route 10 spur.
This road is signed only for the roads it feeds into: US 101 northbound and I-10 eastbound. It has only twointerchanges between its ends: a westbound exit off the spur at Mission Road immediately before merging with US 101 northbound, and the eastbound exit for State Street and Soto Street before it merges onto I-10 eastbound—this one is numbered (as exit 19).[16] There is no direct access from the I-10 spur to I-5.[18]
Exit list
The entire route is inLos Angeles,Los Angeles County.
| mi[16] | km | Exit[52] | Destinations | Notes | ||
|---|---|---|---|---|---|---|
| 0.0 | 0.0 | — | US 101 north (Santa Ana Freeway) | Western terminus of San Bernardino Freeway; no access to US 101 south; US 101 exit 1D | ||
| 0.1 | 0.16 | — | Mission Road | Westbound exit and eastbound entrance; also includes access from Pleasant Avenue and northbound US 101 (via exit 1D) onto entrance ramp | ||
| 0.6 | 0.97 | 19 | State Street to Soto Street | Eastbound exit and westbound entrance | ||
| 1.0 | 1.6 | — |   I-10 east (San Bernardino Freeway east) | No access to I-10 west; freeway continues as I-10 east | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
There are three auxiliary Interstate Highways associated with I-10 in California:
Onebusiness loop of I-10 exists in California, running throughBlythe inRiverside County.
California Roads portal
Greater Los Angeles portalPhoto caption: Opening of the Interstate 10 freeway into Santa Monica on January 5, 1966.
 Interstate 10 | ||
|---|---|---|
| Previous state: Terminus | California | Next state: Arizona |
