예술가들에게 영감을 주는 다리 샌프란시스코-오클랜드 베이 브릿지 VIDEO: San Francisco–Oakland Bay Bridge
San Francisco–Oakland Bay Bridge
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. It has one of the longest spans in the United States.
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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)
excluding approaches
wiki
샌프란시스코와 오클랜드를 연결하며, 예술가들에게 영감을 주는 다리 1933년 건설 현수교 샌프란시스코-오클랜드 베이 브리지는 샌프란시스코 만에 위치한 다리로, 샌프란시스코와 오클랜드를 잇는다. 간단히 베이 브리지라고도 한다. 금문교만큼 많은 사진이 찍히지는 않지만, 1936년 금문교 개통 후 6개월 후에 뒤따라 지어진 이 유료 교량은 샌프란시스코와 오클랜드 사이의 중요한 통로 역할을 하고 있다. 이 다리에는 25,000개의 LED 조명이 달려 있는 설치 예술이 있어 앞으로도 오랫동안 밝게 빛날 것이다 총길이: 7,180m 시공: 1933년 7월 9일 높이: 160m wikipedia |
The toll bridge was conceived as early as the gold rush days, but construction did not begin until 1933. Designed by Charles H. Purcell, and built by American Bridge Company, it opened on November 12, 1936, six months before the Golden Gate Bridge. It originally carried automobile traffic on its upper deck, and trucks and commuter trains on the lower, but after the Key System abandoned rail service, the lower deck was converted to all-road traffic as well. In 1986 the bridge was unofficially dedicated to James Rolph.
The bridge has two sections of roughly equal length; the older western section, officially known as the Willie L. Brown Jr. Bridge (after former San Francisco Mayor and California State Assembly Speaker Willie L. Brown Jr.), connects downtown San Francisco to Yerba Buena Island, and the newer unnamed eastern section connects the island to Oakland. The western section is a double suspension bridge with two decks, westbound traffic being carried on the upper deck while eastbound is carried on the lower one. The largest span of the original eastern section was a cantilever bridge. During the 1989 Loma Prieta earthquake, a portion of the eastern section's upper deck collapsed onto the lower deck and the bridge was closed for a month. Reconstruction of the eastern section of the bridge as a causeway connected to a self-anchored suspension bridge began in 2002; the new eastern section opened September 2, 2013, at a reported cost of over $6.5 billion, a 2,500% cost overrun from the original estimate of $250 million. Unlike the western section and the original eastern section of the bridge, the new eastern section is a single deck with the eastbound and westbound lanes on each side making it the world's widest bridge, according to Guinness World Records,as of 2014. Demolition of the old east span was completed on September 8, 2018.
https://en.wikipedia.org/wiki/San_Francisco%E2%80%93Oakland_Bay_Bridge
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