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The main span is the longest span without any ground support. Note : There is no standard way to measure the total length of a bridge. Some bridges are measured from the beginning of the entrance ramp to the end of the exit ramp.
The world's longest suspension bridges are listed according to the length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges, often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. [4]
Span Length Type Carries Crosses Opened Location State Ref. 1: Verrazzano-Narrows Bridge: 1,298 m (4,260 ft) 4,176 m (13,701 ft) Suspension 2 levels steel truss deck, steel pylons 7+6 lanes 370+1298+370
The bridge has a central span of 4,260 feet (1.30 km; 0.81 mi). It was the longest suspension bridge in the world until it was surpassed by the Humber Bridge in the UK in 1981. The bridge has the 18th-longest main span in the world, as well as the longest in the Americas.
The bridge opened on November 1, 1957, [10] connecting two peninsulas linked for decades by ferries. At the time, the bridge was formally dedicated as the "world's longest suspension bridge between anchorages", allowing a superlative comparison to the Golden Gate Bridge, which has a longer center span between towers, and the San Francisco–Oakland Bay Bridge, which has an anchorage in the middle.
It was also the longest suspension bridge in the world at the time of its opening, with a main span of 1,595.5 feet (486.3 m) and a deck 127 ft (38.7 m) above Mean High Water. The span was originally called the New York and Brooklyn Bridge or the East River Bridge but was officially renamed the Brooklyn Bridge in 1915.
The World's Greatest Bridges, Archive.org copy of The Bridge over the Strait of Messina website (out of date and other errors) List of longest spans, Pub Quiz Help (includes bridges that have not yet been completed) Steel bridges in the world, and other bridge statistics, The Swedish Institute of Steel Construction, March 2003 (out of date)
The Russky Bridge over the Eastern Bosphorus in Vladivostok, Russia, with its 1,104 metres (3,622 ft) span, has the longest span of any cable-stayed bridge, displacing the former record holder, the Sutong Bridge over the Yangtze River in the People's Republic of China 1,088 metres (3,570 ft) on 12 April 2012. [citation needed]