The eastern span replacement of the San Francisco–Oakland Bay Bridge is a construction project replacing an unsafe cantilever portion of the Bay Bridge with a new self-anchored suspension bridge (SAS) and viaduct. The new span crosses the San Francisco Bay between Yerba Buena Island and Emeryville. It was built between 2002 and 2013, and does not have an official name other than that of the bridge as a whole. The eastern span replacement is the largest public works project in California history, with an estimated cost of $6.4 billion. Originally scheduled to open in 2007, several problems delayed the opening until September 2, 2013. It is currently the world's widest bridge, according to Guinness World Records. (more...)