FREEWAYS AND ROADS

Due to its unique geography, and the freeway revolts of the late 1950s, San Francisco is one of the few American cities with arterial thoroughfares instead of having numerous highways within the city.
Interstate 80 begins at the approach to the Bay Bridge and is the only direct automobile link to the East Bay. U.S. Route 101 connects to the western terminus of Interstate 80 and provides access to the south of the city along San Francisco Bay toward Silicon Valley. Northbound, the routing for U.S. 101 uses arterial streets Mission Street, Van Ness Avenue,Lombard Street, Richardson Avenue, and Doyle Drive to connect to the Golden Gate Bridge, the only direct automobile link to Marin County and the North Bay.
State Route 1 also enters San Francisco from the north via the Golden Gate Bridge, but turns south away from the routing of U.S. 101, first onto Park Presidio Blvd through Golden Gate Park, and then bisecting the west side of the city as the 19th Avenue arterial thoroughfare, joining with Interstate 280 at the city's southern border. Interstate 280 continues this southerly routing along the central portion of the Peninsula south to San Jose. Interstate 280 also turns to the east along the southern edge of the city, terminating just south of the Bay Bridge in the South of Market neighborhood. After the 1989 Loma Prieta Earthquake, city leaders decided to demolish the Embarcadero Freeway as well, and voters approved demolition of a portion of the Central Freeway, converting them into street-level boulevards.
State Route 35, which traverses the majority of the Peninsula along the ridge of the Santa Cruz Mountains, enters the city from the south as Skyline Boulevard, following city streets until it terminates at its intersection with Highway 1. State Route 82 enters San Francisco from the south as Mission Street, following the path of the historic El Camino Real and terminating shortly thereafter at its junction with 280. The western terminus of the historic transcontinental Lincoln Highway is in Lincoln Park. Major east–west thoroughfares include Geary Boulevard, the Lincoln Way/Fell Street corridor, and Market Street/Portola Drive.