San Francisco–Oakland Bay Bridge
San Francisco-Oakland Bay Bridge
|Location:||San Francisco and Oakland|
|Added to NRHP:||August 13, 2001|
|San Francisco–Oakland Bay Bridge|
The western span of the San Francisco-Oakland Bay Bridge
|Carries||10 lanes of I-80 throughout, and pedestrians and bicycles east of Yerba Buena Island (YBI)|
|Crosses||San Francisco Bay
|Locale||San Francisco and Oakland|
|Maintained by||Caltrans and the Bay Area Toll Authority|
|Design||Double-decked suspension spans (two, connected by center anchorage), tunnel, cast-in-place concrete transition span, self-anchored suspension span, precast segmental concrete viaduct|
|Total length||West: 10,304 ft (3,141 m)
East span: 10,176 ft (3,102 m)
Total: 4.46 miles (7.18 km)
|Width||West: 5 traffic lanes totaling 57.5 ft (17.5 m)
East: 10 traffic lanes totaling 258.33 ft (78.74 m)
|Height||West: 526 ft (160 m)|
|Longest span||West: two main spans
2,310 ft (704 m)
East: one main span
1,400 ft (430 m)
|Clearance above||Westbound: 14 feet (4.3 m), with additional clearance in some lanes
Eastbound: 14.67 feet (4.47 m)
|Clearance below||West: 220 feet (67 m)
East: 191 feet (58 m)
|Designer||Charles H. Purcell|
|Construction begin||July 8, 1933|
|Opened||November 12, 1936|
|Toll||Cars (east span, westbound only)
$6.00 (rush hours)
$2.50 (carpool rush hours)
$4.00 (weekday non-rush hours)
$5.00 (weekend all day)
It has two spans over water. The western span is a suspension bridge while the eastern span is a self-anchored suspension bridge. The eastern span used to be a cantilever bridge but it was removed once the new bridge opened. The cantilever span was destroyed in the 1989 Loma Prieta Earthquake which is one of the reasons why the Eastern span was replaced.
The west span is a double suspension bridge with two decks. Westbound traffic is carried on the upper deck and eastbound on the lower deck. The new east span is a single deck with the eastbound and westbound lanes on each side. It is the world's widest bridge.
References[change | change source]
- "National Register of Historic Places Registration Form". National Park Service – USDoI.
- "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13.
- San Francisco-Oakland Bay Bridge Archived 1 November 2010 at WebCite
- "Welcome to the Traffic Data Branch - 2012AADT link". California Department of Transportation. Retrieved September 22, 2013.
- "Bridge Facts San Francisco-Oakland Bay Bridge". Bay Area Toll Authority, 43.4 million toll-paid vehicles (86.8 million trips) annually. 2013. Retrieved September 14, 2013.
- In a self-anchored suspension bridge the main cables are attached to the end of the road deck. This avoids having anchor points in unstable ground.
- Press release (California Department of Transportation) 2014.