Contact: Lee Saage Transportation Authority (415) 552-4812

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SAN FRANCISCO, CA – This week, the San Francisco County Transportation Authority (Transportation Authority) awarded a construction contract for the I-80/Yerba Buena Island Westbound Ramps Improvement Project to Golden State Bridge, Inc. of Benicia. With a bid of $49,305,345.50 to complete the project, Golden State Bridge, Inc. will construct new westbound on and off ramps connecting the east side of Yerba Buena Island to the new East Span of the San Francisco-Oakland Bay Bridge. The Transportation Authority’s original cost estimate for the project was $53,400,000.

“As it ties into the new San Francisco-Oakland Bay Bridge, the I-80/Yerba Buena Island ramps project will bring tremendous safety and economic development benefits to the Islands,” said Supervisor Jane Kim, who represents the Treasure Island and Yerba Buena Island communities in District 6.

“The Transportation Authority is pleased to reach this implementation milestone with our partners at the Treasure Island Development Authority and Caltrans, and we look forward to breaking ground next month,” stated Tilly Chang, Executive Director of the Transportation Authority, the lead agency for the project.

The I-80/YBI Westbound Ramps Improvement Project is a joint effort between the Transportation Authority and the Treasure Island Development Authority (TIDA) and will be closely coordinated with the California Department of Transportation’s continuing efforts on the new East Span of the Bay Bridge and TIDA’s planned redevelopment of Yerba Buena Island.

Golden State Bridge, Inc. has pledged to exceed the project contract’s 12.5% Disadvantaged Business Enterprise (DBE) goal with a commitment of 13.83% DBE participation. The project is funded by the Federal Highway Bridge Program, State Proposition 1B Local Bridge Seismic Retrofit Account, and TIDA local matching funds.

Construction of the project is scheduled to begin in January 2014 with completion anticipated by the summer of 2016.

About the San Francisco County Transportation Authority (

Created in 1989, the San Francisco County Transportation Authority is responsible for long-range transportation planning for the city, and it analyzes, designs and funds improvements for San Francisco’s roadway and public transportation networks. The Transportation Authority administers and oversees the delivery of the Prop K half-cent local transportation sales tax program; serves as the designated Congestion Management Agency (CMA) for San Francisco, under state law; acts as the San Francisco Program Manager for grants from the Transportation Fund for Clean Air (TFCA); and administers and oversees the delivery of the 2010 Prop AA vehicle registration program which funds transportation improvements listed in the voter-approved expenditure plan. The Transportation Authority Board consists of the eleven members of the San Francisco Board of Supervisors, who act as Transportation Authority Commissioners. For more information about the Transportation Authority, visit