• Time and money: When the Bay Area chose the self-anchored suspension span design in 1998, it was supposed to cost $1.1 billion and open in 2003. Since then, the price has soared nearly sixfold to $6.4 billion and the opening date pushed out a decade.

  • Seismic zone: Designed to last 150 years, the state classifies the Bay Bridge as a "lifeline span," its highest safety rating, which means it is expected to be in service within 24 hours of an earthquake generating motions that are estimated to occur once every 1,500 years. The bridge is located within 10 miles of the Hayward and San Andreas faults.

  • Weighty matters: The self-anchored suspension span weighs 51,800 tons, the equivalent of roughly 761,000 people with an average weight of 150 pounds apiece.

    Source: Staff research, Bay Area Toll Authority, Caltans