The eastern crossing, between Yerba Buena Island and Oakland, was a cantilever bridge with a double-tower span, five medium truss spans, and a 14-section truss causeway. Rincon Hill is the western anchorage and touch-down for the San Francisco landing of the bridge connected by three shorter truss spans.

The western crossing between Yerba Buena and downtown San Francisco has two complete suspension spans connected at a center anchorage. The bridge consists of two crossings, east and west of Yerba Buena Island, a natural mid-bay outcropping inside San Francisco city limits. Demolition of the old east span was completed on September 8, 2018. Unlike the western section and the original eastern section of the bridge, the new eastern section is a single deck carrying all eastbound and westbound lanes, making it the world's widest bridge, according to Guinness World Records, as of 2014. Reconstruction of the eastern section of the bridge as a causeway connected to a self-anchored suspension bridge began in 2002 the new eastern section opened September 2, 2013, at a reported cost of over $6.5 billion the original estimate of $250 million was for a seismic retrofit of the existing span. 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. The largest span of the original eastern section was a cantilever bridge. 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 one. Brown Jr.), connects downtown San Francisco to Yerba Buena Island, and the newer unnamed eastern section connects the island to Oakland. Bridge (after former San Francisco Mayor and California State Assembly Speaker Willie L. The bridge has two sections of roughly equal length the older western section, officially known as the Willie L.

In 1986, the bridge was unofficially dedicated to former California Governor James Rolph. On October 12, 1963, traffic was reconfigured to one way traffic on each deck, westbound on the upper deck, and eastbound on the lower deck, with trucks and buses allowed on the upper deck. It originally carried automobile traffic on its upper deck, with trucks, cars, buses and commuter trains on the lower, but after the Key System abandoned rail service on April 20, 1958, the lower deck was converted to all-road traffic as well. Purcell, and built by American Bridge Company, it opened on Thursday, November 12, 1936, six months before the Golden Gate Bridge. The toll bridge was conceived as early as the California Gold Rush days, with 'Emperor' Joshua Norton famously advocating for it, but construction did not begin until 1933. It has one of the longest spans in the United States. As part of Interstate 80 and the direct road between San Francisco and Oakland, it carries about 260,000 vehicles a day on its two decks. The San Francisco–Oakland Bay Bridge, known locally as the Bay Bridge, is a complex of bridges spanning San Francisco Bay in California. Westbound: 14 feet (4.3 m), with additional clearance in some lanes San Francisco and Oakland, California, U.S.Ĭalifornia Department of Transportation and the Bay Area Toll Authorityĭouble-decked suspension spans (two, connected by center anchorage), tunnel, cast-in-place concrete transition span, self-anchored suspension span, precast segmental concrete viaduct

Flow free bridges 12x12 level 35