San Francisco-Oakland Bay Bridge Eastern Span replacement
The jap span substitute of the San Francisco–Oakland Bay Bridge became a production mission to update a seismically unsound part of the Bay Bridge with a brand new self-anchored suspension bridge (SAS) and 2 viaducts. The bridge is withinside the U.S. country of California and crosses the San Francisco Bay between Yerba Buena Island and Oakland. The span substitute happened between 2002 and 2013, and is the maximum high-priced public works mission in California history, with a very last fee tag of $6.5 billion, a 2,500% value overrun from the unique estimate of $250 million. Originally scheduled to open in 2007, numerous troubles behind schedule the hole till September 2, 2013. With a 258.33 ft (78.74 m), comprising 10 general-cause lanes, it's miles the world's widest bridge in step with Guinness World Records.
The Bay Bridge has predominant sections: the western suspension spans and their technique systems among San Francisco and Yerba Buena Island (YBI) and the systems among YBI and the jap terminus in Oakland. The unique jap segment became composed of a double-balanced cantilever span, 5 through-truss spans, and a truss causeway. This component became a concern after a segment collapsed at some point during the Loma Prieta earthquake on October 17, 1989. The substitute span is engineered to resist the most important earthquake predicted over a 1500-year period, and its miles indicated to ultimate as a minimum of one hundred fifty years with proper maintenance.
Construction costs: $6.5 billion
Location: San Francisco and Oakland, California, U.S.
