
The San Francisco-Oakland Bay Bridge consists of two separate spans, each of about 10,000 feet. The west span connects San Francisco to Yerba Buena Island in the middle of the bay, and the east span connects the island to Oakland. Daily traffic is about 280,000 vehicles. Completed in 1936, the west span is a suspension bridge, and the original east span was a cantilever design. In 1989, during the Loma Prieta earthquake, a portion of the east span collapsed, with one fatality. While the damage was repaired quickly, the decision was made to construct an earthquake-resistant new east span, of suspension design. Construction of this new span began in 2002, parallel to the original cantilever span that remained in operation during the 11 years of construction. Finally, on September 3rd, 2013, the new east span was opened for traffic. The hosts discuss the many challenges of completing this strikingly designed new Bay Bridge east span with Tony Anziano, Toll Bridge Program Manager for the California Department of Transportation, commonly called Caltrans, the department that has managed this project, in conjunction with the Bay Area Toll Authority and the California Transportation Commission.