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- The double-deck crossing extends 8 miles (13 km) and consists of two end-to-end suspension bridges of 2,310-foot (704-metre) main spans and 1,160-foot (354-metre) side spans; an exceptionally large-bore tunnel through Yerba Buena Island that extends about 0.5 mile (about 800 metres); a cantilever bridge with a main span of 1,400 feet (427 metres); and a long viaduct to the Oakland shore.
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Mar 20, 2024 · The San Francisco-Oakland Bay Bridge is made up of two bridge segments: a skyway structure/single anchored suspension bridge between Oakland and Yerba Buena Island, and a suspension span from the island to San Francisco. Connecting the two is the largest diameter bore tunnel in the world.
The San Francisco–Oakland Bay Bridge, known locally as the Bay Bridge, is a complex of bridges spanning San Francisco Bay in California. As part of Interstate 80 and the direct road between San Francisco and Oakland , it carries about 260,000 vehicles a day on its two decks.
Bay Bridge, complex crossing that spans San Francisco Bay from the city of San Francisco to Oakland via Yerba Buena Island. It consists of two end-to-end suspension bridges, a large-bore tunnel, a cantilever bridge, and a viaduct. It is one of the preeminent engineering feats of the 20th century.
- The Editors of Encyclopaedia Britannica
Jul 22, 2021 · The San Francisco-Oakland Bay Bridge’s multi-modal design is a direct example of the mindset of commuters during the 1930s. Constructed in 1936, the bridge was used to support the increase of automobiles and public transit lines in the early half of the 20th century.
The original bridge was designed by Ralph Modjeski and Charles Purcell, among others, and was built by the American Bridge Company from 1933 to 1936, for a total cost of $77 million, with steel from United States Steel. Upon opening, it was the longest highway bridge in the world.
When the San Francisco – Oakland Bay Bridge opened on November 12, 1936 it was the longest crossing over water in the world (4.3 miles) and the most expensive bridge ever built at the time ($77.2 million). The bridge was considered one of the most remarkable engineering feats of its time.
Abstract. The new San Francisco-Oakland Bay Bridge East Span consists of four major components; the signature 385 m single-tower, self-anchored suspension span, the 1.6 mile dual box girder skyway, the 467 m Yerba Buena Island transition structures, and the 406 m Oakland touchdown approach.
