BAY BRIDGE

The bridge consists of 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. Originally, the largest span of the original eastern half was a cantilever bridge. During the 1989 Loma Prieta earthquake, a section of the eastern section's upper deck collapsed onto the lower deck and the bridge was closed for a month. Reconstruction of the eastern section of the bridge as a causeway connected to a self-anchored suspension bridge began in 2002; the new bridge opened September 2, 2013 at a reported cost of over $6.5 billion, and is currently the world's widest bridge, according to Guinness.
Artwork
the bay lights is the world's largest LED light sculpture, 1.8 miles wide and 500 feet high. inspired by the Bay Bridge's 75th Anniversary, its 25,000 white LED lights are individually programmed by artist Leo Villareal to create a never-repeating dazzling display across the Bay Bridge West Span through March 2015.

 Impact
The Bay Bights is a monumental tour to force eight times the scale of the Eiffel Tower's 100th Anniversary lighting. Shining from dark until 2:am for two years. it will impact over 50 million people in the Bay Area, with billions more seeing it in the media and online. By conservative estimates,$97 million dollars will be added to the local economy.

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