Interstate 10 in California Totally Explained

Everything about Santa Monica Freeway totally explained

In the U.S. state of California, Interstate 10, the major east-west Interstate Highway in the Southern United States, runs east from Santa Monica, California, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona. In the Los Angeles area, it's known as the Santa Monica Freeway and San Bernardino Freeway, linked by a short concurrency on Interstate 5 (the Golden State Freeway) at the East Los Angeles Interchange. At the East LA Interchange, a short piece of the San Bernardino Freeway west of I-5 is part of the legislative definition of Route 10, but doesn't carry Interstate 10. This section of freeway, once a short Interstate 110 until 1968, is signed for I-10 eastbound and for U.S. Route 101 (its terminus, at the Santa Ana Freeway) westbound.
This route is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System.

Route description

Santa Monica Freeway

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 famous East Los Angeles Interchange.

Major cities Bolded cities are officially-designated control cities for signs
Santa Monica Los Angeles San Bernardino Redlands Indio Other Desert Cities Blythe Phoenix, Arizona

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 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. 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 a few miles. Then, Interstate 10 heads east and merges with the traffic from the spur to US 101 onto the San Bernardino Freeway.
There is no access on this spur from Route 10 eastbound to I-5 northbound.

Portions in Palm Deserts

In Riverside County, I-10 goes through Calimesa before entering Beaumont and merging with the eastern end of State Route 60. In Banning, I-10 has a diamond intersection with State Route 243 before going through the San Gorgonio 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 and running concurrently with State Route 111. I-10 then has an interchange in Coachella with the northern end of the State Route 86S freeway, which also carries the routing of 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.
The Rosa Parks Freeway is Route 10 from Route 110 to Route 405, as named by Assembly Concurrent Resolution 134, Chapter 2 in 2002.

History

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. 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. 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. 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.)
   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.
   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 ca. 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, 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.
   The route east from Los Angeles was added to the Interstate Highway System on August 7, 1947. 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. It was signed as State Route 26 by 1942, running along Olympic Boulevard. and became I-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..

Exit list

� Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and don't necessarily reflect current mileage. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County	Location	Postmile	#	Destinations	Notes
Los Angeles LA R2.16-48.27	Santa Monica	1 35.18			Continuation beyond SR 1 south
		1 R34.89	1A	4th Street, 5th Street	Westbound exit and eastbound entrance
		1 R34.58 R2.16	1A		Signed as exit 1B westbound
		R3.07	1B	20th Street	Eastbound exit and westbound entrance
		R3.34	1C	Cloverfield Boulevard	Westbound exit and eastbound entrance
		R4.24	2A	Centinela Avenue
	Los Angeles	R4.51	2	Bundy Drive	Westbound exit and eastbound entrance; signed as exits 2B (south) and 2C (north)
		R5.45	3		Signed as exits 3A (north) and 3B (south)
		R6.40	4	National Boulevard, Overland Avenue
		R7.21	5	National Boulevard	Westbound exit and eastbound entrance
		R7.92	6	Robertson Boulevard – Culver City
		R8.97	7A	La Cienega Boulevard, Venice Boulevard (SR 187)
		R9.31	7B	Fairfax Avenue, Washington Boulevard
		R10.43	8	La Brea Avenue
		R11.39	9	Crenshaw Boulevard
		R12.32	10	Arlington Avenue
		R12.82	11	Western Avenue
		R13.30	11	Normandie Avenue
		R13.80	12	Vermont Avenue
		14.25	12	Hoover Street	No eastbound entrance
		14.84	13	, Convention Center	Signed as exits 13A (south) and 13B (north) eastbound
			13A	Grand Avenue	No westbound exit
		15.80	14A	Los Angeles Street – Convention Center	Westbound exit and eastbound entrance
			14A	Maple Avenue	Eastbound exit and westbound entrance
		16.38	14B	San Pedro Street	No westbound entrance
			15A	Central Avenue
		17.35	15B	Alameda Street
		17.71	16A	Mateo Street, Santa Fe Avenue
		18.39 5 16.90	16B		West end of I-5 overlap; no exit number westbound
		18.39 5 16.90		Boyle Avenue, Soto Street
		5 17.56	135A	Fourth Street
		5 18.06	135B	Cesar Chavez Avenue	Eastbound exit and westbound entrance
		5 18.45 18.39	19B		East end of I-5 overlap; no exit number eastbound
		18.39	19B		Westbound exit and eastbound entrance
		18.52	19A	State Street	Westbound exit and eastbound entrance
		19.07	19C	Soto Street	Signed as exit 19 eastbound
See San Bernardino Freeway
San Bernardino SBD 0.00-R39.16	Colton	R24.24	72
	San Bernardino	25.26	73	Waterman Avenue	Signed as exits 73A (south) and 73B (north) eastbound
	Loma Linda	26.27	74	Tippecanoe Avenue, Anderson Street
	Loma Linda	27.30	75	Mountain View Avenue – Bryn Mawr
	Redlands	28.30	76	California Street
		29.31	77A	Alabama Street
		29.76	77B		Signed as exit 77C westbound
		29.82	77C	Tennessee Street	Signed as exit 77B westbound
		30.90	79
		31.87	80	University Street	Eastbound exit and westbound entrance
		32.11	80	Cypress Avenue	Westbound exit and eastbound entrance
		33.13- 33.29	81	Ford Street, Redlands Boulevard
	Yucaipa	34.29	82	Wabash Avenue	Westbound exit and eastbound entrance
		35.50	83	Yucaipa Boulevard – Yucaipa
		R37.03	85	Oak Glen Road, Live Oak Canyon Road
Riverside RIV R0.00-R156.49	Calimesa	R0.02	87	County Line Road
		R0.86	88	Calimesa Boulevard – Calimesa
		R1.92	89	Singleton Road	Westbound exit and eastbound entrance
		R3.05	90	Cherry Valley Boulevard – Cherry Valley
		R5.53	92	Oak Valley Parkway
	Beaumont	6.67	93
		6.67	93	Beaumont	Eastbound exit and westbound entrance
		7.57	94
		8.21	95	Pennsylvania Avenue	Westbound exit and eastbound entrance
	Banning	9.31	96	Highland Springs Avenue
		11.33	98	Sunset Avenue
		R11.96	99	22nd Street – Downtown Banning
		12.85	100
		13.86	101	Hargrave Street – Idyllwild
		R14.76	102	Ramsey Street	Westbound exit and eastbound entrance
		R16.54	103	Fields Road
		R17.66	104	Apache Trail – Cabazon
		R19.40	106	Main Street – Cabazon
		R24.55	111	Haugen Lehmann Way
		R25.20	112		Eastbound exit and westbound entrance
		27.23	114	Whitewater
		29.69	117
		33.13	120	Indian Avenue – North Palm Springs
		36.14	123	Palm Drive – Desert Hot Springs
		39.49	126	Date Palm Drive
		43.36	130	Ramon Road, Bob Hope Drive – Palm Springs
	Palm Desert	44.51	131	Monterey Avenue – Thousand Palms
		46.89	134	Cook Street
		50.48	137	Washington Street
	Indio	R52.34	139	Indio Boulevard (Bus. 10 east), Jefferson Street – Indio	Former SR 86
		R54.74	142	Monroe Street – Central Indio
		R55.74	143	Jackson Street
		R56.95	144
	Coachella	R57.83	145		Westbound exit is via exit 146
	Coachella	R58.89	146	Dillon Road (Bus. 10 west) – Coachella
		R74.83	162	Frontage Road
		R81.55	168	Mecca, Twentynine Palms	Former SR 195
		R86.07	173	Chiriaco Summit
		R90.12	177	Hayfield Road
		R95.05	182	Red Cloud Road
		R102.01	189	Eagle Mountain Road
		R105.08	192
		R114.40	201	Corn Springs Road
		R129.93	217	Ford Dry Lake Road
		R135.04	222	Wiley's Well Road
	Blythe	R145.11	232	Mesa Drive – Blythe Airport, Mesa Verde
		R149.15	236
		R152.15	239	Lovekin Boulevard – Blythe
		R153.15	240	7th Street – Blythe
		R154.16	241		West end of US 95 overlap
		R156.10	243	Riviera Drive (Bus. 10 west)

Further Information

Get more info on 'Santa Monica Freeway'.

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