Interstate 10 in California

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Interstate 10 marker

Interstate 10
Christopher Columbus Transcontinental Highway
I-10 highlighted in red
Route information
Defined by Streets and Highways Code § 310
Maintained by Caltrans
Length: 243.31 mi[3] (391.57 km)
Existed: August 7, 1947 by FHWA[1]
July 1, 1964 by Caltrans[2] – present
Major junctions
West end: SR 1 in Santa Monica
East end: I-10 / US 95 at Arizona state line
Counties: Los Angeles, San Bernardino, Riverside
Highway system
SR 9 SR 11

Interstate 10 (I-10, The 10), a major east–west Interstate Highway, runs in the U.S. state of California east from Santa Monica, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona. In the greater Los Angeles area, it is known as the Santa Monica Freeway and the San Bernardino Freeway, linked by a short concurrency on Interstate 5 (the Golden State Freeway) at the East Los Angeles Interchange.

Interstate 10 also has portions designated as either the Rosa Parks Freeway, the Redlands Freeway, or the Christopher Columbus Transcontinental Highway.[4]

Route description[edit]

Interstate 10 begins at the McClure Tunnel in Santa Monica, California.

The California Streets and Highways Code defines Route 10 from "(a) Route 1 in Santa Monica to Route 5 near Seventh Street in Los Angeles. (b) Route 101 near Mission Road in Los Angeles to the Arizona state line at the Colorado River via the vicinity of Monterey Park, Pomona, Colton, Indio, and Chiriaco Summit and via Blythe.." Despite the legislative definition, Caltrans connects the two sections of the route by cosigning I-10 down Interstate 5 between the East LA Interchange and the Santa Monica Freeway, negating a section of the San Bernardino Freeway west of I-5. This short section of Route 10 between Route 5 and Route 101, which was formerly defined as Route 110 (signed as Interstate 110) until 1968, is signed overhead for I-10 eastbound and for U.S. 101 westbound. This I-5/I-10 cosigning is consistent with the Federal Highway Administration's Interstate Highway route logs that such an overlap exists for the segment of I-10 in California.[5]

I-10 is part of the California Freeway and Expressway System,[6] and is part of the National Highway System,[7] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[8] I-10 is eligible to be included in the State Scenic Highway System,[9] but it is not officially designated as a scenic highway by the California Department of Transportation.[10] The Santa Monica Freeway is Route 10 from Route 1 to Route 5, as named by the State Highway Commission on April 25, 1957. The section between the Harbor (I-110) and San Diego (I-405) freeways is also signed as the Rosa Parks Freeway, after the African American civil rights activist. The I-10 freeway is signed as the Christopher Columbus Transcontinental Highway in Santa Monica.[11]

Santa Monica Freeway[edit]

The Santa Monica Freeway is the westernmost segment of Interstate 10, beginning at the western terminus of I-10 at the Pacific Coast Highway in Santa Monica, California and ending southeast of downtown Los Angeles at the East Los Angeles Interchange.

The Santa Monica Freeway interchange with the Harbor Freeway, as seen by traffic going eastbound on the Santa Monica
Downtown Los Angeles skyline as seen from the freeway. A slight (smaller than usual rush hour) traffic jam is ahead.

Interstate 10 begins in the city of Santa Monica when State Route 1 turns into a freeway and heads east. SR 1 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 Interstate 405. Interstate 10 then continues through Sawtelle, Rancho Park, Cheviot Hills, Beverlywood and Crestview in West Los Angeles, Lafayette Square and Wellington Square in Mid-City, Arlington Heights, West Adams and Jefferson Park into downtown Los Angeles. On the western edge of downtown, I-10 has an interchange with Interstate 110 to the south and State Route 110 to the north. I-10 then travels along the southern edge of downtown to the East Los Angeles Interchange.[12][13]

A typical traffic jam on the Santa Monica Freeway, at 2:30 p.m. on a Wednesday afternoon

At the East Los Angeles Interchange, State Route 60 diverges east towards Riverside and Pomona. I-10 then turns north, running concurrently with Interstate 5 for approximately one mile. Then, Interstate 10 heads east and merges with the traffic from the spur to US 101 onto the San Bernardino Freeway.[12][13]

Heavily defaced button copy sign marking an entrance to the Santa Monica Freeway, 2005

The freeway is 14 lanes wide (two local, five express in each direction) from the Harbor Freeway (Interstate 110) interchange to the Arlington Avenue off-ramp. 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 (though a much smaller version) opened in 1965, with a formal dedication held in 1966.[14]

While the construction of the Century Freeway several miles to the south reduced traffic congestion to a considerable amount by creating an alternate route from downtown to the Los 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 United States.[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 the California Highway Patrol to quickly clear accidents from the through traffic lanes, and the fences reduce congestion by preventing rubbernecking (in which vehicles slow down so their occupants can watch the accident investigation).[15]

The Santa Monica Freeway is considered the border between West Los Angeles and South Los Angeles. Part of the freeway also skims the Byzantine-Latino quarter, which is home to many immigrants affiliated with the Eastern Orthodox Church.

San Bernardino Freeway[edit]

Heavy traffic in downtown San Bernardino along the San Bernardino Freeway near the interchange with the Downtown San Bernardino Freeway (I-215)

Interstate 10 heads east from the Downtown Los Angeles Eastside Los Angeles region, with two HOV lanes paralleling it on the north side called the El Monte Busway. These roadways extend to Alameda Street on US 101, following the spur west to where I-10 passes California State University Los Angeles. However, after the Interstate 710 interchange, these lanes merge back into the typical left lanes of each roadway.

East of Interstate 710, I-10 continues through Monterey Park, Alhambra, Rosemead, San Gabriel, El Monte, and Baldwin Park before intersecting with Interstate 605. It then travels through West Covina and Covina before heading up Kellogg Hill into San Dimas, where I-10 intersects with State Route 57 (formerly part of Interstate 210) and State Route 71 at the Kellogg Interchange. I-10 then heads east through Pomona and Claremont, and leaving L.A. County to enter San Bernardino County.[12][13]

Interchange with the Ontario Freeway (I-15) as seen by west-bound traffic on the San Bernardino Freeway.

In San Bernardino County, Interstate 10 travels through Montclair, Upland, and Ontario, providing access to Ontario International Airport. I-10 then has a four-level interchange with Interstate 15 before traveling through Fontana, Rialto, and Colton. I-10 then intersects with Interstate 215 before briefly entering San Bernardino city proper and traveling through Loma Linda and Redlands. In Redlands, I-10 intersects with the State Route 210 freeway (future Interstate 210) and with State Route 38 before entering Yucaipa and eventually Riverside County.[12][16]

Riverside County[edit]

Cabazon Dinosaurs is a roadside attraction at the Main Street exit in Cabazon.

In Riverside County, I-10 goes through Calimesa before entering Beaumont and merging with the eastern end of State Route 60 (itself formerly the California segment of US 60). In Banning, I-10 has a diamond intersection with State Route 243 before passing through San Gorgonio Pass between the San Bernardino Mountains and the San Jacinto Mountains and entering Palm Springs. I-10 intersects with the western end of State Route 111, whereas I-10 bypasses the town and connects to State Route 62, a major east–west route through the Mojave Desert. I-10 cuts through Cathedral City and passes just outside the city limits of Rancho Mirage, Palm Desert, and Indian Wells before entering Indio. I-10 then has an interchange in Coachella with the northern end of the State Route 86 freeway, which also leads to SR-111. Past Coachella, I-10 traverses the Mojave Desert, with few junctions and no cities. Several miles east and roughly halfway between Indio and Blythe, in the community of Desert Center, I-10 intersects with State Route 177, a turnoff that connects to SR-62. Near the Arizona state line, I-10 meets the terminus of State Route 78. In the city of Blythe, I-10 runs concurrently with U.S. Route 95 as both routes cross the Colorado River into Arizona.[12][16]

I-10 westbound is usually signed as towards San Bernardino and/or Los Angeles in the Mojave Desert. Eastbound, in the San Gorgonio Pass, the signage indicates "Indio, Other Desert Cities", and indicates "Blythe" after Indio — the first sign for Phoenix does not occur until Indio.[citation needed]


I-10 after the 1994 collapse

What is now Interstate 10 east of Los Angeles was generally part of the Atlantic and Pacific Highway, one of many transcontinental national auto trails. By 1926, when the United States Numbered Highways were assigned, the road across the desert east of Indio was unimproved, while the road from Indio west to San Bernardino (as well as various roads west to Los Angeles) was paved.[17] In late 1926, U.S. Route 99 was designated along the section of road from San Bernardino to Indio, where it turned south along present State Route 86 on the west side of the Salton Sea.[18] West of San Bernardino, US 99 ran to Los Angeles concurrent with U.S. Route 66 (via Pasadena) before turning north; this route to Los Angeles is north of the later alignment of Interstate 10.[19] The piece of this between San Bernardino and Indio was defined in 1915 as Legislative Route 26. (It continued south from Indio via El Centro to Heber; see U.S. Route 99 and State Route 86 for details. A 1931 extension took it south to Calexico on present State Route 111.)[20]

The route from Indio via Mecca to the Arizona state line near Blythe was defined in 1919 as pre-1964 Legislative Route 64. (Later extensions took LR 64 west along present State Route 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.[20] Neither of these was a signed route until around 1932, when U.S. Route 60 was extended west from Arizona to Los Angeles, running along LR 64 to Indio, LR 26 (with US 99) to Beaumont, pre-1964 Legislative Route 19 to Pomona, and LR 26 to Los Angeles. (The original alignment of LR 26 ran roughly where State Route 60 now is west of Pomona, but an alignment close to present I-10 opened around 1934).[21][22]

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. U.S. Route 70 was extended west from Arizona ca. 1936 along the whole route to Los Angeles,[21] and, between 1933 and 1942,[23] US 99 moved from US 66 to present I-10 between San Bernardino and Los Angeles, forming a three-way concurrency between Pomona and Los Angeles. Old alignments and names include Valley Boulevard, Ramona Boulevard and Garvey Avenue.

Interstate 10 eastbound near Indio

I-10 holds the distinction of being the first freeway in Los Angeles. A four-mile section of today's freeway was built between 1933 and 1935 at a cost of $877,000. 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.[24]

The route east from Los Angeles was added to the Interstate 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.[1] By then, most if not all of the San Bernardino Freeway had been completed, and I-10 was signed along the existing freeway along with US 70, US 99, and part of US 60. Those three routes were all removed in the 1964 renumbering, leaving only I-10.

The part west of downtown Los Angeles was pre-1964 Legislative Route 173, defined in 1933 from Santa Monica to downtown Los Angeles.[25] It was signed as State Route 26 by 1942, running primarily Olympic Boulevard.[23] It was later replaced by the Santa 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.[1] It was completed ca. 1964,[26] and became Route 10 in the 1964 renumbering.

Portions of the Santa Monica Freeway going over La Cienega Boulevard collapsed after the Northridge earthquake on January 17, 1994, and were rebuilt using new Seismic-Resistant bridge designs.[27]

The El Monte Busway was converted to high occupancy toll (HOT) lanes in 2013 as part of the Metro ExpressLanes project.[28]

On July 19, 2015, a bridge carrying the eastbound lanes of I-10 near Desert Center collapsed from floodwater from the remnants of Hurricane Dolores, trapping a vehicle.[29][30]

On October 23, 2016 thirteen people died in a tour bus crash. The cause is under investigation.

Juan Bautista de Anza National Historic Trail[edit]

The I-10 is part of the auto tour route of the Juan Bautista de Anza National Historic Trail, a National Park Service unit in the United States National Historic Trail and National Millennium Trail programs. In 2005, Caltrans began posting signs on roads that overlap with the historic 1776 Juan Bautista de Anza trail route, so that California drivers can now follow the trail.


With the increasing high traffic volume between Los Angeles and San Bernardino, Caltrans has a few projects on the books to relieve the traffic congestion:

Exit list[edit]

County Location mi[3] km Exit[3] Destinations Notes
Los Angeles Santa Monica 0.00 0.00 SR 1 north (Pacific Coast Highway) – Oxnard National western terminus; west end of SR 1 overlap; former US 101 Alt. north
1A 4th Street, 5th Street Westbound exit and eastbound entrance
0.96 1.54 1 To SR 1 south (Lincoln Boulevard) East end of SR 1 overlap; signed as exit 1A eastbound, 1B westbound; former SR 2 east/SR 1 south/US 66 east/US 101 Alt. south
1B 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 I-405 (San Diego Freeway) – Sacramento, LAX Airport, Long Beach Signed as exits 3A (north) and 3B (south); former SR 7; I-405 north exit 53B, south exit 53
4.24 6.82 4 National Boulevard, Overland Avenue Signed as just "Overland Avenue" 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 La Cienega Boulevard, Venice Boulevard (SR 187 west)
7.00 11.27 7B Fairfax Avenue, Washington Boulevard
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 No exit number westbound
12 Normandie Avenue No exit number westbound
11.64 18.73 Vermont Avenue
12.25 19.71 Hoover Street
13 I-110 south / SR 110 north (Harbor Freeway) / Pico Boulevard – San Pedro, Pasadena, Downtown Los Angeles Signed as exits 13A (south) and 13B (north) eastbound; I-110/SR 110 exit 21
13C Grand Avenue No westbound exit
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
15.71 25.28 16A Mateo Street, Santa Fe Avenue
16.23 26.12 SR 60 east (Pomona Freeway) to I-5 south (Santa Ana Freeway) – Pomona, Santa Ana Eastbound exit and westbound entrance; SR 60 west 1A
Boyle Avenue Eastbound exit only
I-5 south (Santa Ana Freeway) to SR 60 east (Pomona Freeway) / Soto Street – Santa Ana, Pomona West end of I-5 overlap; westbound exit and eastbound entrance; east end of Santa Monica Freeway; SR 60 west exit 1E
135A[a] Fourth Street
135B[a] Cesar Chavez Avenue Eastbound exit and westbound entrance
19.00 30.58 I-5 north (Golden State Freeway) – Sacramento East end of I-5 overlap; I-5 north exit 135C, south exit 135B
19.07 30.69 19A State Street Westbound left exit and eastbound entrance
19.00 30.58 To US 101 north (Santa Ana Freeway) / San Bernardino Freeway west – Los Angeles Westbound left exit and eastbound left entrance
19.07 30.69 19C Soto Street No eastbound entrance; no exit number 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 exit is part of the I-710 exit; serves CSU Los Angeles
Monterey Park 20.77 33.43 I-710 (Long Beach Freeway) / Valley Boulevard – Long Beach Eastbound exit and westbound entrance also include ramps to/from Ramona Road; I-710 north exit 22, south exits 22A-B
Alhambra I-10 Express Lanes – El Monte Busway Westbound left exit and eastbound left entrance
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 GabrielRosemead line 24.22 38.98 24 New Avenue – Monterey Park
24.72 39.78 25A Del Mar Avenue – San Gabriel Eastbound exit and westbound entrance for Express Lanes only
25.23 40.60 25B San Gabriel Boulevard
Rosemead 25.73 41.41 26A Walnut Grove Avenue
RosemeadEl Monte line 26.35 42.41 26B SR 19 (Rosemead Boulevard) – Pasadena Access to Flair Drive eastbound
El Monte 27.35 44.02 27 Temple City Boulevard – Rosemead Westbound exit and entrance
Baldwin Avenue – El Monte Eastbound exit and entrance
28.06 45.16 28 Santa Anita Avenue – El Monte
28.89 46.49 29A Peck Road South
29B Peck Road North, Valley Boulevard Westbound exits signed as 29B (Valley Boulevard) and 29C (Peck Road North)
I-10 Express Lanes East end of Express Lanes
29.97 48.23 30 Garvey Avenue, Durfee Avenue Westbound exit and eastbound entrance
Baldwin Park 30.54–
31A I-605 (San Gabriel River Freeway) Eastbound exits signed as 31A (south) and 31B (north); I-605 exit 22
30.93 49.78 31B Frazier Street Signed as exit 31C eastbound; no eastbound entrance
31.61 50.87 32A Baldwin Park Boulevard – Baldwin Park
32.05 51.58 32B Francisquito Avenue – La Puente No eastbound entrance
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 – West Covina Westbound exit only
34.78 55.97 35 Vincent Avenue, West Covina
35.89 57.76 36 SR 39 (Azusa Avenue) - West Covina
36.87 59.34 37A Citrus Street – Covina
37.40 60.19 37B Barranca Street - Covina
37.90 60.99 38A Grand Avenue – Walnut
38.39 61.78 38B Holt Avenue – Covina
San Dimas 39.85 64.13 40 Via Verde
Pomona 41.41 66.64 41 Kellogg Drive No eastbound entrance; serves Cal Poly Pomona
PomonaSan Dimas line 41.83 67.32 42A SR 57 (Orange Freeway) to I-210 (Freeway) – Santa Ana Signed as exit 42 westbound; SR 57 north is former I-210; SR 57 north exit 21, south exits 22A-B
42.07 67.71 42B SR 71 south (Chino Valley Freeway) / Campus Drive – Corona Westbound exit is via exit 44; SR 71 exit 15
Pomona 43.05 69.28 43 Fairplex Drive – La Verne Westbound exit is part of exit 44; serves Los Angeles County Fair
43.58 70.14 44 Dudley Street
44.67 71.89 45A White Avenue Westbound exit is via exit 45
45.12 72.61 45B Garey Avenue, Orange Grove Avenue – Pomona Signed as exit 45 westbound
45.80 73.71 46 Towne Avenue
Claremont 47.13 75.85 47 Indian Hill Boulevard – Claremont
San Bernardino Montclair 48.33 77.78 48 Monte Vista Avenue
48.89 78.68 49 Central Avenue
OntarioUpland 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 Eastbound exit is via exit 54; former US 99 north
55B Archibald Avenue – Ontario Airport Signed as exit 55 eastbound
55.83 89.85 56 Haven Avenue
56.84 91.48 57 Milliken Avenue
57.60 92.70 58 I-15 (Ontario Freeway) – Corona, San Diego, Barstow, Las Vegas Signed as exits 58A (north) and 58B (south) eastbound; I-15 north exit 109, south exits 109A-B
58.79 94.61 59 Etiwanda Avenue, Valley Boulevard Valley Blvd was former US 99 south
Fontana 60.83 97.90 61 Cherry Avenue
62.84 101.13 63 Citrus Avenue
63.88 102.80 64 Sierra Avenue – Fontana
Bloomington 66.15 106.46 66 Cedar Avenue – Bloomington
Rialto 67.33 108.36 68 Riverside Avenue – Rialto
Colton 68.36 110.01 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, Valley Boulevard, Sperry Drive Valley Boulevard was former US 99 north
San Bernardino 71.90 115.71 72 I-215 – San Bernardino, Barstow, Riverside Former I-15E / US 91 / US 395; east end of San Bernardino Freeway; west end of Redlands Freeway; I-215 north exit 40A-B, south exit 40
72.92 117.35 73 Waterman Avenue Signed as exits 73A (south) and 73B (north) eastbound
73.93 118.98 74 Tippecanoe Avenue, Anderson Street – San Bernardino International Airport
Loma Linda 74.96 120.64 75 Mountain View Avenue – Bryn Mawr
Loma LindaRedlands line 75.96 122.25 76 California Street
Redlands 76.97 123.87 77A Alabama Street
77.29 124.39 77B SR 210 west (Foothill Freeway) to SR 330 north – Pasadena, Running Springs Former SR 30 west; SR 210 east exits 85A-B
77.45 124.64 77C Tennessee Street
78.56 126.43 79 SR 38 (Orange Street) / 6th Street – Downtown Redlands
79.53 127.99 80 University Street Eastbound exit and westbound entrance
Cypress Avenue Westbound exit and eastbound entrance
80.79 130.02 81 Ford Street, Redlands Boulevard Redlands Boulevard was former US 99 north
Yucaipa 81.95 131.89 82 Wabash Avenue Westbound exit and eastbound entrance
83.16 133.83 83 Yucaipa Boulevard – Yucaipa
84.69 136.30 85 Oak Glen Road, Live Oak Canyon Road
85.63 137.81 Wildwood Rest Area
Eastbound only
Riverside Calimesa 86.84 139.76 87 County Line Road
87.68 141.11 88 Calimesa Boulevard – Calimesa Former US 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; former US 60 west
6th Street – Beaumont Eastbound exit and westbound entrance; former US 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
Banning 96.13 154.71 96 Highland Springs Avenue
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; former US 60 west / US 99 north
103.36 166.34 103 Malki Road Formerly Fields Road
104.48 168.14 104 Morongo Trail – Cabazon Former US 99 south; formerly Apache Trail
106.22 170.94 106 Main Street – Cabazon Former US 99 north
111.37 179.23 110 Railroad Avenue, Haugen–Lehmann Way – Whitewater Formerly Verbenia Avenue
112.02 180.28 111 SR 111 south – Palm Springs Eastbound exit and westbound entrance
Palm Springs 113.07 181.97 Whitewater Rest Area
114.05 183.55 114 Whitewater
116.51 187.50 117 SR 62 east – Twentynine Palms, Yucca Valley
Palm Springs 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
Rancho Mirage 130.18 209.50 130 Bob Hope Drive, Ramon Road – Palm Springs
Palm Desert 131.33 211.36 131 Monterey Avenue – Thousand Palms
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 Indio Boulevard was former US 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 To SR 111 (Golf Center Parkway)
Coachella 144.65 232.79 145 SR 86 south (Expressway) – Brawley, El Centro Westbound exit is via exit 146; former SR 86S
145.71 234.50 146 Dillon Road – Coachella
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 Former SR 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
191.92 308.87 192 SR 177 (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 – Wiley's Well Rest Area
231.94 373.27 232 Mesa Drive – Blythe Airport, Mesa Verde Former US 60 east
235.97 379.76 236 SR 78 east (Neighbours Boulevard south) / I-10 Bus. west (Neighbours Boulevard north) – Brawley
Blythe 238.97 384.58 239 Lovekin Boulevard – Blythe
239.98 386.21 240 7th Street – Blythe
240.99 387.84 241 US 95 north (Intake Boulevard) – Needles, Fairgrounds West end of US 95 overlap
242 Hobsonway (I-10 Bus.) Westbound exit and entrance; opened in 2016
242.92 390.94 243 Riviera Drive / I-10 Bus. west Eastbound exit and entrance; westbound exit and entrance replaced by exit 242; I-10 Bus. is former US 60 west
Agricultural Inspection Station (westbound only)
243.31 391.57 I-10 east / US 95 south – Phoenix, Yuma Continuation into Arizona
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. ^ a b Exit number follows I-5 rather than I-10.

Spur to US 101[edit]

The legislative definition of Route 10 includes a spur from Interstate 5 (the Golden State Freeway) west to U.S. Route 101 (the Santa Ana Freeway) near downtown Los Angeles. This section of roadway, the westernmost part of the San Bernardino Freeway, was in fact part of the original San Bernardino Freeway, carrying U.S. Route 60, U.S. Route 70 and U.S. Route 99 long before the Golden State Freeway opened. It was added to the Interstate Highway System by 1958 as Interstate 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 two interchanges between its ends: a westbound exit off of the spur at Mission Road immediately before merging with U.S. Route 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).[3] There is no access from the I-10 spur to I-5.[13]

Exit list
The entire route is in Los Angeles, Los Angeles County.

mi[3] km Exit[32] 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

See also[edit]

  • Lloyd G. Davies, Los Angeles City Council member, 1943–51, urged rail transportation on the Santa Monica Freeway


  1. ^ a b c "Interstate Highway Types and the History of California's Interstates". California Highways. Retrieved November 29, 2011. [self-published source]
  2. ^ "Interstate 10". California Highways. Retrieved November 29, 2011. [self-published source]
  3. ^ a b c d e Warring, KS (April 18, 2008). "Interstate 10 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Retrieved February 5, 2009. 
  4. ^ "2004 Named Freeways, Highways, Structures and Other Appurtenances In California" (PDF). Caltrans. California Department of Transportation. January 2004. pp. 7–8. Archived from the original (PDF) on November 7, 2005. Retrieved December 8, 2017. 
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  32. ^ Google (May 15, 2015). "Map of the I-10 spur (San Bernardino Freeway)" (Map). Google Maps. Google. Retrieved May 15, 2015. 

External links[edit]

Route map: Google

KML is from Wikidata

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