San Francisco–Oakland Bay Bridge

The San Francisco–Oakland Bay Bridge (known locally as the Bay Bridge) is a complex of bridges spanning San Francisco Bay of the US State of California

The bridge consists of two sections-

• Western section connects downtown San Francisco to Yerba Buena Island  and 
• Eastern section connects the island to Oakland

The Western crossing lies between Yerba Buena and downtown San Francisco. It is composed of two complete suspension spans connected at a center anchorage

The eastern crossing, between Yerba Buena Island and Oakland, was a cantilever bridge that consisted of a double-tower span, five medium truss spans, and a 14-section truss causeway

Eastern span replacement

The replacement span underwent a series of design changes, both progressive and regressive.The final plan included a single-towered self anchored suspension span  starting at Yerba Buena island, leading to a long viaduct to the Oakland touchdown.

The east span closed permanently to traffic on August 28, 2013 at 8pm and the replacement span opened for traffic on September 2, 2013 at 10pm, 7 hours ahead of schedule

 

 

The new bridge opened on September 2, 2013 at a reported cost of over $6.5 billion is currently the world's widest bridge, according to Guinness World Records

Eastern span – original and replacement