San Mateo–Hayward Bridge
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The San Mateo–Hayward Bridge is a bridge crossing the American state of California's San Francisco Bay, linking the San Francisco Peninsula with the East Bay. The bridge's western end is in Foster City, a suburb on the eastern edge of San Mateo. The eastern end of the bridge is in Hayward. It is the longest fixed-link bridge in California and the 25th longest in the world by length. The bridge is owned by the state of California, and is maintained by California Department of Transportation (Caltrans), the state highway agency. Further oversight is provided by the Bay Area Toll Authority (BATA).
Aerial view of the San Mateo–Hayward Bridge, with Foster City in the foreground
Lift span of the original bridge
The highrise section of the San Mateo–Hayward bridge (1967 span).
San Mateo–Hayward Bridge (1967), showing some of the electric transmission towers paralleling the bridge route and Werder Pier (at left)
San Francisco Bay
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San Francisco Bay is a large tidal estuary in the U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, San Jose, and Oakland.
San Francisco Bay
Aerial panorama of the northern Bay, the Bay Bridge, Golden Gate, and Marin Headlands on a clear morning. November 2014 photo by Doc Searls.
Panorama of San Francisco Bay, and the city skyline seen from Marin County in the Golden Gate National Recreation Area
Population density and low elevation coastal zones in San Francisco Bay (2010). The San Francisco Bay is especially vulnerable to sea level rise.