San Francisco–Oakland Bay Bridge facts for kids
Quick facts for kids San Francisco–Oakland Bay Bridge |
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The western span of the San Francisco-Oakland Bay Bridge
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| Coordinates | 37°49′5″N 122°20′48″W / 37.81806°N 122.34667°W |
| 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 |
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| 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) |
| 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 |
| Statistics | |
| Daily traffic | 240,000 |
| 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
Location in California
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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. 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.
Images for kids
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Sketch of the proposed "Rush San Francisco Trans-Bay Suspension Bridge" (1913)
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Preliminary layout studies for the bridge
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The Bay Bridge under construction at Yerba Buena Island in 1935
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A double balanced cantilever bridge, five truss bridges, and two truss causeways that connected Yerba Buena Island to Oakland. Dismantled in 2016.
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Traveling through the westbound upper level of the Yerba Buena tunnel
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The illuminated western span as seen from the Embarcadero in San Francisco
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Schematic drawing of the Bay Bridge
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Daytime view of the Bay Bridge and San Francisco seen from Yerba Buena Island
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A view of the Bay Bridge from the Bank of America building
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A view of Bay Bridge lights from a pier next to the Ferry Building in San Francisco
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A collapsed section of roadway deck after the 1989 earthquake
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Obsolete hot riveted laced ties (left, eastern span) and bolted box beam retrofit (right, western span)
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The eastern span in 2017
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A view of the San Francisco-Oakland Bay Bridge western span from the waterfront in San Francisco
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Some new construction (2004)
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Substantial progress (2011)
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The completed replacement and the old bridge (2013)
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Rest of old and new bridge (June 2015)
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Artist's simulation of final appearance after old span demolition
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See also
In Spanish: Puente de la Bahía de San Francisco a Oakland para niños
