The bridge deck of a Retractable bridge can be rolled backwards to open a gap for crossing traffic, usually a ship on a waterway. Image File history File links own photo File links The following pages link to this file: Bridge Retractable bridge ... Plate girder bridge - below roadbed type A plate girder bridge is a bridge often seen supporting railroad roadbeds over short spans, this bridge may be a shallow U-shape in cross section with the roadbed at the bottom of the U or the bridge may be entirely under the roadbed. ... A lift bridge over the Erie Canal at Lockport. ... A submerging bridge can also be a static bridge temporarily disappearing when water levels rise A moveable submersible bridge lowers the bridge deck to permit crossing traffic instead of raising it like a lift bridge. ... Hörnbrücke in Kiel An example of a Folding Bridge is the Hörnbrücke (Hörnbridge or Hoernbridge) in the city of Kiel in Schleswig-Holstein. ... The Golden Gate Bridge connecting San Francisco and its peninsula to Marin County A bridge is a structure built to span a gorge, valley, road, railroad track, river, body of water, or any other physical obstacle. ...
The bridge is retracted to the right
Image File history File links own photo File links The following pages link to this file: Retractable bridge ... Image File history File links own photo File links The following pages link to this file: Retractable bridge ...
Retractablebridges are made so the movable span slides back underneath an adjacent section of the bridge.
Swing bridges are supported on vertical pivots, and the movable span rotates horizontally to open the bridge.
For instance, the Baltic Millennium Bridge in Gateshead, England (to be opened to the public in 2001), consists of two parabolic arches connected by a series of parallel cables.
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