ending in 2013, the San Francisco MSA had the greatest percentage decline of workers commuting by automobile (3.8 percent) among MSAs with more than a half million residents. Freeways and highways The Bay Area possesses an extensive freeway and highway system (although it is not as extensive as Southern California). Trans-bay crossings The Peninsula to the South Bay The freeway system in Santa Clara county is augmented by the Santa Clara County expressway system. North Bay East Bay 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. The Joe Colla Interchange is the interchange between US 101, I-280, and I-680. Both I-280 and I-680's southern termini is located as this interchange. San Francisco streets Due to its unique geography, and the freeway revolts of the late 1950s, San Francisco is one of the few American cities served primarily by arterial roads for most trips within city limits, rather than a freeway network supplemented by arterial roads. 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. Northward, the routing for U.S. 101 uses arterial streets Mission Street (northbound) and South Van Ness Avenue (southbound), 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 south from San Francisco. 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, and a portion of the Central Freeway, converting them into