San Mateo-Hayward Bridge

San Mateo–Hayward Bridge
Aerial view of the San Mateo–Hayward Bridge, with Foster City in the foreground
Coordinates	37°36′07″N 122°12′17″W / 37.6019°N 122.2047°W / 37.6019; -122.2047Coordinates: 37°36′07″N 122°12′17″W / 37.6019°N 122.2047°W / 37.6019; -122.2047
Carries	Cars and trucks on 6 lanes of SR 92
Crosses	San Francisco Bay
Locale	Foster City and Hayward, California, U.S.
Other name(s)	San Mateo Bridge
Owner	Caltrans
Maintained by	Caltrans and the Bay Area Toll Authority
ID number	35 0054
Characteristics
Design	orthotropic deck (western highrise span) trestle (eastern causeway spans)
Total length	36,960 feet (11,270 m) 7.0 miles (11.3 km)
Width	41 metres (135 ft) roadway approach
Longest span	757.2 feet (230.8 m)
Number of spans	37 (highrise) 871 (causeway)
Clearance below	134.5 feet (41.0 m)
History
Designer	Caltrans, Bay Toll Crossings Division
Constructed by	superstructure: Murphy Pacific Bridge Builders, Emeryville substructure: Pomeroy-Gerwick-Steers, San Francisco
Fabrication by	Murphy Pacific Corporation, Emeryville
Construction cost	US$70,000,000 (equivalent to $503,000,000 in 2016)
Opened	31 October 1967 4 November 2002 (new westbound causeway)
Statistics
Daily traffic	93,000
Toll	Cars (westbound only) $5.00 (cash or FasTrak), $2.50 (carpools during peak hours, FasTrak only)
San Francisco Bay Bridges

The San Mateo–Hayward Bridge (commonly called the San Mateo Bridge) is a bridge crossing the U.S. state of California's San Francisco Bay, linking the San Francisco Peninsula with the East Bay. The bridge's west end is in Foster City, a suburb on the eastern edge of San Mateo. The east end of the bridge is in Hayward. It is the longest 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 Caltrans, the state highway agency. Further oversight is provided by the Bay Area Toll Authority.

The bridge is part of State Route 92, whose western terminus is at the town of Half Moon Bay on the Pacific coast. It links Interstate 880 in the East Bay with U.S. Route 101 on the Peninsula. It is roughly parallel to and lies between the San Francisco–Oakland Bay Bridge and the Dumbarton Bridge, and is sometimes used by commuters to avoid traffic delays due to emergencies on those bridges.

The San Francisco Bay Toll-Bridge Company issued US$4,500,000 (equivalent to $62,000,000 in 2016) in bonds to raise a portion of the estimated US$7,500,000 (equivalent to $103,400,000 in 2016) budget required to build the first bridge. First-year operating revenues were anticipated to be US$868,469 (equivalent to $11,974,000 in 2016), but the original bridge lost money in its first year of operation.