San Mateo–Hayward Bridge
From Wikipedia, the free encyclopedia
 |
This article does not cite any references or sources. (February 2008) Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. |
| San Mateo-Hayward Bridge | |
|---|---|
 Bridge as seen from San Mateo looking east |
|
| Carries | 6 lanes of SR 92 |
| Crosses | San Francisco Bay |
| Locale | Foster City, California and Hayward, California |
| Maintained by | Caltrans |
| Total length | 11,265.41 meters (36,960 feet) |
| Clearance below | 41 meters (135 feet) |
| AADT | 93,000 |
| Opening date | October 1967 |
| Toll | $4.00 (westbound) (FasTrak) |
| Route of San Mateo-Hayward Bridge (4) across San Francisco Bay. |
 |
| Maps and aerial photos | |
The San Mateo-Hayward Bridge (commonly called the San Mateo Bridge) is a bridge crossing California's San Francisco Bay in the United States, linking the San Francisco Peninsula with the East Bay. More specifically, the bridge's western end is in Foster City, the most recent urban addition to the eastern edge of San Mateo. The eastern end of the bridge is in Hayward. The bridge is owned by the state of California, and is maintained by Caltrans, the state highway agency.
The bridge is part of State Route 92, whose western terminus is at the town of Half Moon Bay on the Pacific coast. Its principal function is to link 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.
[edit] History and description
The original bridge was built in 1929, and upon completion was the longest bridge in the world. It was subsequently replaced with a modern span in 1967. The total length of the bridge is 7.0 miles (11.3 km). The 1.9 miles (3.1 km) highrise section, forming the western end of the bridge, is composed of multiple steel girder spans. The eastern trestle portion accounts for the remaining 5.1 mi (8.2 km) of the overall length. The shipping channel beneath the highrise is 750 feet (229 m) wide with a vertical clearance of 135 feet (41 m). The bridge recently underwent an extensive seismic retrofitting to protect against earthquake damage. The bridge carries about 93,000 cars and other vehicles on a typical day.
The highrise section was initially built with six lanes and the eastern causeway with four lanes (two in each direction). The causeway section was a perennial traffic bottleneck until it was expanded to six lanes in 2004, along with much needed improvements in its connections with Interstate 880 in Hayward.
Bus service over the bridge is provided by AC Transit's Line M transbay service.
High-voltage power lines built by PG&E parallel the bridge all the way across the bay. They provide power to the Peninsula and San Francisco.
[edit] Tolls
As of 2008, the toll is $4, and is collected for westbound traffic only. During peak traffic hours the two left lanes are designated HOV lanes allowing carpool vehicles carrying two or more people (two persons in two seater cars) or motorcycles to pass for free. The three adjacent lanes are FasTrak-only lanes. During non-peak hours, the two HOV lanes become FasTrak-only lanes.
[edit] External links
|
||||||||
|
||||||||
.svg/20px-I-80_(CA).svg.png){kind=small}
|
|||||||||||||||||
