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A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck. The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges. Generally speaking, they cost less to build for longer moveable spans. [1]
Pont Gustave-Flaubert – crossing the Seine at Rouen, this lift bridge is the highest vertical-lift bridge in Europe, [citation needed] allowing ships up to 55 m tall to pass under it. It is 670 m long, with a span of 116 metres [3]. A striking design feature, the two road sections are mounted outside the central towers.
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The current structure replaces an earlier swing bridge on the same site, built for the Lake Shore and Michigan Southern Railway. When the United States Army Corps of Engineers began calling for its replacement in 1909, both single- and double-leaf bascule bridge options were considered, as well as vertical-lift options. Construction began on ...
Vertical lift bridges in the United States by state or territory (10 C) Pages in category "Vertical lift bridges in the United States" The following 34 pages are in this category, out of 34 total.
The bridge is the world's heaviest and widest double-decked vertical-lift bridge. [6] More than 35,000 tons of concrete and 7,000 tons of steel went into the bridge, which replaced the narrow 54-year-old swing bridge, declared a menace to navigation on the busy Keweenaw Waterway. [7]
In 1925, the north end of the bridge was raised about 16 feet (4.9 m) to tie in with tracks that served the St. Paul Union Depot yard. The vertical-lift span has 105-foot-high (32 m) towers, and the electrical lift system was built with a possible 45-foot (14 m) elevation.
The bridge parallels the Goethals Bridge, which carries Interstate 278. It has the longest lift span of any vertical-lift bridge in the world, [7] with two 215-foot (66 m) towers and a 558-foot (170 m) truss span that allows a 500-foot (152 m) channel. It clears mean high water by 31 feet (9.45 m) when closed and 135 feet (41 m) when lifted.