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更新日期：2019-05-31
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Golden Gate Bridge a suspension bridge across the Golden Gate Strait. It connects the city of San Francisco in the north of the peninsula of San Francisco and the southern part of Marin County near the suburb of Sausalito. The Golden Gate Bridge was the largest suspension bridge in the world since its opening in 1937 and until 1964. The total length of the bridge is 2737 m the length of the main span is 1280 m the height of the supports is 227 m above the water and the mass is 894 500 m. The height of the carriageway above the water surface during the tide is 67 m. This is one of the most recognizable bridges in the world.
Before the bridge was built the only short route between San Francisco and the present district of Marin was the way by boat through the waters of the San Francisco Bay. The ferry service began as far back as 1820, and it began regularly in the 1840s to transport water to San Francisco.
In 1867, the Sausalito Land and Ferry Company (Sausalito Land and Ferry Company) established a special service that eventually evolved into the Golden Gate Ferry Company (the Golden Gate Ferry Company) a subsidiary of the Southern Pacific Railroad. By the end of the 1920s the Golden Gate Ferry Company was the largest firm in terms of the number of ferry operations. Automobile ferries have become very profitable and important factor for the economy of the region.
The ferry between Hyde Street Pier in San Francisco and Sausalito in Marin County took about 20 minutes and cost 1 dollar per car later the price was lowered to compete with the new bridge. The trip from the ferry port of San Francisco took 27 minutes.
Many people wanted a bridge to be built that would connect San Francisco with Marin County. San Francisco was by then the largest American city which was served mainly by ferries. Because of the lack of permanent communication with the settlements in other parts of the Gulf area the growth rate of the city was lower than the national average. Many experts however believed that the bridge could not be built above the strait at 6,700 ft with its strong and highly swirling tides 372 ft deep in the center of the canal and frequent strong winds. In their opinion fierce winds and strong fogs would interfere with construction and operation.
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