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The San Francisco-Oakland Bay Bridge is a complex of bridges spanning San Francisco Bay between the cities of San Francisco and Oakland. One of America's most impressive engineering achievements, the complex was built at practically the same time as the nearby Golden Gate Bridge and opened to traffic in 1936.
The bridge has two sections of roughly equal length; the older western section connects downtown San Francisco to Yerba Buena Island and the newer eastern section connects the island to Oakland. The western section is a double suspension bridge with two decks, westbound traffic being carried on the upper deck while eastbound is carried on the lower level. The largest span of the original eastern section was a cantilever bridge. During the 1989 Loma Prieta earthquake, a portion of the eastern section's upper deck collapsed onto the lower deck and the bridge was closed for a month. Replacement of the eastern section of the bridge as a causeway connected to a self-anchored suspension bridge began in 2002, with the project being completed in 2013.
Highlights: JCT US 101, James Lick Skyway, Yerba Buena Island, MacArthur Maze: JCT I-580; JCT I-880
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