San Francisco–Oakland Bay Bridge

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San Francisco-Oakland Bay Bridge
Location San Francisco and Oakland
Built 1933
NRHP reference # 00000525[1][2]
Added to NRHP August 13, 2001
San Francisco–Oakland Bay Bridge
Oakland Bay Bridge Western Part.jpg
The western span of the San Francisco-Oakland Bay Bridge
Coordinates 37°49′5″N 122°20′48″W / 37.81806°N 122.34667°W / 37.81806; -122.34667Coordinates: 37°49′5″N 122°20′48″W / 37.81806°N 122.34667°W / 37.81806; -122.34667
Carries 10 lanes of I-80 throughout, and pedestrians and bicycles east of Yerba Buena Island (YBI)
Crosses San Francisco Bay
via YBI
Locale San Francisco and Oakland
Owner Caltrans
Maintained by Caltrans and the Bay Area Toll Authority
ID number
  • 34 0003 (West)
  • 34 0004 (YBI Tunnel)
  • 33 0025 (East)
Characteristics
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
Material Steel, concrete
Total length West: 10,304 ft (3,141 m)
East span: 10,176 ft (3,102 m)
Total: 4.46 miles (7.18 km)
excluding approaches
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)[3]
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)
History
Designer Charles H. Purcell
Construction begin July 8, 1933
Opened November 12, 1936; 81 years ago (1936-11-12)
Statistics
Daily traffic 240,000[4][5]
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)
San Francisco–Oakland Bay Bridge is located in California
San Francisco–Oakland Bay Bridge
San Francisco–Oakland Bay Bridge
Location in California

The San Francisco-Oakland Bay Bridge is a series of bridges across San Francisco, California. It is part of Interstate 80 in California.

It has two spans over water. The western span is a suspension bridge while the eastern span is a self-anchored suspension bridge.[6] 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.[7]

References[change | change source]

  1. "National Register of Historic Places Registration Form". National Park Service – USDoI. Missing or empty |url= (help)
  2. "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13.
  3. San Francisco-Oakland Bay Bridge Archived 1 November 2010 at WebCite
  4. "Welcome to the Traffic Data Branch - 2012AADT link". California Department of Transportation. Retrieved September 22, 2013.
  5. "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.
  6. 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.
  7. Press release (California Department of Transportation) 2014. [1]