California Road Map
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California's primary Interstate Highways connect its major cities and facilitate travel between California and its neighbors.
- From its southern terminus at the Mexican border, I-5 runs northward through California to the Oregon border, passing through San Diego, Los Angeles, and Sacramento.
- From its western terminus in San Diego, I-8 runs eastward, leaving the state at the Arizona border.
- From its western terminus in Los Angeles, I-10 runs eastward, leaving the state at the Arizona border.
- From its southern terminus in San Diego, I-15 runs northward, leaving the state at the Nevada border.
- I-40 enters California at the Arizona border, running westward and connecting to I-15 near Barstow.
- In northern California, I-80 enters the state at the Nevada border, near Reno, continuing westward though Sacramento and Oakland to San Francisco.
California's auxiliary Interstate Highways, identified by 3-digit numbers, serve urban areas of the state.
- I-110, I-210, I-215, and I-405, I-605, and I-710 serve the greater Los Angeles area. I-110, I-605, and I-710 all traverse cities southeast of Los Angeles in a northerly direction from their termini near the Pacific coast. I-210 traverses suburban cities just south of the San Gabriel Mountains, between its western terminus at I-5 and its eastern terminus at I-15. I-215 traverses outlying areas east of I-15 between Cajon Canyon in the north and Murrieta in the south. I-405 parallels I-5 through the coastal areas of Los Angeles and Orange counties.
- I-280, I-580, I-680, and I-880 serve the San Francisco Bay Area. Starting in San Francisco, I-280 runs southward through San Mateo and Santa Clara counties to San Jose. I-580 runs between Marin County near San Rafael and I-5 in the San Joaquin valley. I-680 traverses Contra Costa and Alameda counties, running between I-80 at Fairfield and the city of San Jose. Starting in Oakland, I-880 runs southeast through Alameda and Santa Clara counties.
- I-505 serves the greater Sacramento area. From I-5 northwest of Sacramento, I-505 runs southward to connect with I-80 near Vacaville.
- I-805 serves the San Diego area. Running from I-5 near the Mexican border and rejoining I-5 in the Sorrento Valley, I-805 bypasses downtown San Diego.
For more information about California's roads and transportation infrastructure, visit the California Department of Transportation website. For a list of scenic roads in California, visit this America's Byways: California page.
California-Map.org is a State Maps reference source.