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San Francisco–Oakland Bay Bridge

The Columbia Encyclopedia, 6th ed. | 2011 | 470 words | Copyright

San Francisco–Oakland Bay Bridge double-decked structure, W Calif.; built 1933–36. It has a total length of 8.25 mi (13.2 km). From San Francisco it crosses the bay to Yerba Buena Island, where a tunnel connects with spans leading to Oakland and Berkeley. The bridge sustained significant damage in the severe 1989 October earthquake that hit the Bay Area; a replacement span for the Yerba Buena–Oakland portion of the bridge is under construction.

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"San Francisco–Oakland Bay Bridge." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

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