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Animation showing the operation of a drawbridge. A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the ...
The lift arms are oriented diagonally to the road. The bridge is painted in yellow and blue, representative of Leeuwarden's flag and seal. [1] This movable bridge is also known as the “Slauerhoffbrug ‘Flying’ Drawbridge” or Frog Bridge (Dutch: Kikkerbrug), the last because of its shape in the down position. One of the main designers is ...
In addition to the drawbridge, the current bridge allowed for the removal of the Lake Surprise Causeway, which dated back to the days of the railroad, restoring the natural water flow into Florida Bay. The project also included the addition of a jersey barrier between the northbound and southbound lanes throughout, passing lanes in various ...
Although a 3,300-foot-long (1,000 m) tunnel was proposed as a replacement in February 1907, [18] the Salt Lake had already applied to replace the fixed trestle span with a drawbridge in September 1906. [19] The location for the new drawbridge was set in May 1907, [20] and the first piles were driven in December 1907. [21]
Between 2008 and 2011, the new fixed-span bridge was constructed to replace the aging drawbridge, which was partially demolished on the southbound side as a result. [2] [3] The new bridge is 75 ft tall (23 m) and consists of two individual 1,610-foot-long spans (490 m) resting on nine hollow precast concrete columns. The spans are made of ...
The four-lane drawbridge was 20 feet tall and was built connecting directly connecting to Gulf Stream Avenue in Sarasota, about a quarter of a mile north of the original bridge. The bridge from Bird Key to St. Armand's Key was replaced a year prior with the set of bridges carrying four lanes, which are still in service.
The bridge opening for barge traffic departing Newtown Creek. Designed by Frederick Zurmuhlen, the Pulaski Bridge is a bascule bridge, a type of drawbridge.Its span crosses Newtown Creek, Long Island Rail Road tracks, and the entrance to the Queens-Midtown Tunnel from south to north.
Wood laminated by stress, glued, dowels, or nails lumber are good for panel bridges. New lumber and wood scavenged from buildings and railroad ties can be used to build stringer bridges. [3] A licensed engineer can help operators design a safe, appropriate timber bridge.