San Francisco Bay Area freeways

The San Francisco Bay Area possesses an extensive freeway system, most of them are interstate highways. [ [http://www.cahighways.org/maps-sf-fwy.html San Francisco Bay Area historical maps] ]

List of freeways

Trans-bay crossings

*Interstate 80 - The western terminus of I-80 is located in San Francisco as James Lick Skyway, just west of the San Francisco – Oakland Bay Bridge. The interstate continues to the east, connecting to Oakland and the north coast of the East Bay as the Eastshore Freeway, and then on to Sacramento, Reno, and New Jersey.
*Interstate 580 - This spur route's western terminus is in Marin County. The Interstate crosses the San Pablo Bay over the Richmond-San Rafael Bridge, goes through Richmond as the John T. Knox Freeway, passes through Oakland as the MacArthur Freeway, then continues to Livermore, through the Altamont Pass to Tracy, where it intersects with Interstate 5, thus providing a link with Southern California.
*State Route 92 - Connecting Half Moon Bay and Hayward, SR 92 becomes the J. Arthur Younger Freeway from Interstate 280 to U.S. Route 101 as it passes through San Mateo before crossing the San Mateo-Hayward Bridge to Interstate 880.
*State Route 84 - On its way from State Route 1 (at the Pacific Coast) near San Gregorio State Beach to Livermore, SR 84 crosses the Bay over the Dumbarton Bridge from Redwood City to Newark.

The Peninsula to the South Bay

*Interstate 280 and U.S. Route 101 - Eight-lane and, in some parts, 10-lane freeways connecting San Francisco to San Jose, passing through the Peninsula as Junipero Serra Freeway and Sinclair Freeways (I-280) and Bayshore Freeway (101). Highway 101 continues south to Gilroy and Salinas, California, before continuing to Los Angeles. For most of its route I-280 runs along the foothills of the Santa Cruz Mountains, and is very scenic, while 101 is highly urban and is locally known as "the world's longest parking lot."
*Interstate 380 - A short 3-mile freeway from Interstate 280 in San Bruno to U.S. 101 near the San Francisco International Airport
*State Route 1 - California's Pacific Coast/Cabrillo Highway becomes a 4-lane freeway between Interstate 280 in Daly City to Pacifica.
*State Route 17 (Santa Cruz Highway) - SR 17 from San Jose to Los Gatos is an 8-lane freeway.
*California Routes 237 (South Bay Freeway) and 85 (West Valley Freeway/Stevens Creek Freeway/Scott M. Greenly Memorial Freeway) - Six-lane freeways connecting the west Santa Clara Valley to the east Santa Clara Valley, bypassing Downtown San Jose.
*State Route 87 (Guadalupe Freeway) - North-south six-lane freeway entirely in San Jose, connecting San Jose International Airport, Downtown to the Almaden Valley.
*The freeway system in Santa Clara county is augmented by its expressway system.

North Bay

*US 101 (Redwood Highway) - continues north of San Francisco as a freeway, crossing the Golden Gate Bridge to Marin and Sonoma counties.
*State Route 37 - connects Marin county to Solano.
*Interstate 580 - continues west of the Richmond-San Rafael Bridge, passing San Quentin State Prison into San Rafael.
*Interstate 780 - connects Interstate 80 and 680 through Vallejo and Benicia.

East Bay

*Interstates 880 (Nimitz Freeway) and 680 travel up the East Bay from San Jose, 880 close to the bay to Oakland, and 680 inland from San Jose north through Fremont, Pleasanton and Concord; then crosses the Benicia-Martinez Bridge and ends at Interstate 80 in Fairfield.
*Interstate 980 (Grove Shafter Freeway) is entirely in Downtown Oakland and begins at Interstate 880 and travels north to become State Route 24 at Interstate 580.
*State Route 13, or the Warren Freeway, is entirely in the Oakland Hills and travels north from Interstate 580 to State Route 24, where the freeway portion ends. Beyond SR 24, SR 13 is Berkeley's Ashby Avenue.
*State Route 24 (Grove Shafter Freeway) begins at Interstate 580 in Oakland and travels east through the Caldecott Tunnel to Interstate 680 in Walnut Creek.
*State Route 238/Interstate 238 (Mission Boulevard) is an arterial from Fremont to Hayward, along the base of the hills, then becomes a freeway near Oakland.
*State Route 4 - The freeway portion of SR 4 runs east through Martinez, Pittsburg, and Antioch.

Named interchanges

The Alemany Maze is the interchange between the James Lick Freeway (U.S. Route 101) and Interstate 280.

The MacArthur Maze is the interchange between the Eastshore Freeway, Nimitz Freeway, and MacArthur Freeway at the east end of the Bay Bridge.

External links

* [http://www.interstate-guide.com/main.html Interstate-Guide.com]
* [http://www.westcoastroads.com/california/sanfrancisco.html West Coast AA Roads (San Fancisco Bay Areas)]