Interstate 10 in California

Interstate 10
Interstate 10
Pearl Harbor Memorial Highway
	I-10 highlighted in red
Route information
	Maintained by Caltrans
Length	242.54 mi (390.33 km)
Existed	August 7, 1947, by FHWA; July 1, 1964, by Caltrans–present
NHS	Entire route
Major junctions
West end	SR 1 in Santa Monica
	I-405 in Los Angeles; I-110 / SR 110 in Los Angeles; I-5 / US 101 / SR 60 in Los Angeles; I-710 in Monterey Park; I-605 in Baldwin Park; I-15 in Ontario; I-215 in Colton; SR 210 in Redlands; SR 60 in Beaumont; US 95 in Blythe;
East end	I-10 / US 95 at Arizona state line in Ehrenberg, AZ
Location
Country	United States
State	California
Counties	Los Angeles, San Bernardino, Riverside
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; State highways in California; Interstate; US; State; Scenic; History; Pre‑1964; Unconstructed; Deleted; Freeways;

Interstate 10 (I-10) is a transcontinental Interstate Highway in the United States, stretching from Santa Monica, California, to Jacksonville, Florida. The segment of I-10 in California, also known as the Pearl Harbor Memorial Highway,^[4] runs east from Santa Monica through Los Angeles, San Bernardino, and Palm Springs before crossing into the state of Arizona. In the Greater Los Angeles area, it is known as the Santa Monica and San Bernardino freeways, linked by a short concurrency on I-5 (Golden State Freeway) at the East Los Angeles Interchange. I-10 also has parts designated as the Rosa Parks and Sonny Bono Memorial freeways.^[5] Some parts were also formerly designated as the Christopher Columbus Transcontinental Highway.^[6] However, the California 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" to Southern California residents (See also California English § Freeways).

The entirety of Interstate 10 in California is defined in the California Streets and Highways Code as Route 10.

^ Starks, Edward (January 27, 2022). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved November 19, 2023.
^ Cite error: The named reference cah Interstates was invoked but never defined (see the help page).
^ "Interstate 10". California Highways. Retrieved November 29, 2011.^{[self-published source]}
^ 2020 Named Freeways, Highways, Structures and Other Appurtenances in California (PDF). California Department of Transportation. January 2021. p. 30. Retrieved February 18, 2024.
^ Trone, Kimberly (January 11, 2002). "Freeway Signs Pay Tribute to Bono". The Desert Sun. p. B1.
^ 2004 Named Freeways, Highways, Structures and Other Appurtenances In California (PDF). California Department of Transportation. January 2004. pp. 7–8. Archived (PDF) from the original on November 7, 2005. Retrieved December 8, 2017.
^ "California Legislature Approves Removal of the Christopher Columbus Transcontinental Highway Designation of the I-10 Freeway". Los Angeles City County Native American Indian Commission. September 1, 2022. Retrieved September 1, 2022.
^ "Christopher Columbus' name to be removed from stretch of I-10 in LA". Spectrum News 1. Charter Communications. September 1, 2022. Retrieved December 11, 2022.