#bridge__span  a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.
  supertype:  physical_structure__structure__construction  a thing constructed; a complex construction or entity; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"
  part:  arch  pier  trestle
  part of:  transportation_system
  subtype:  Bailey_bridge  a temporary bridge designed for rapid construction
  subtype:  cantilever_bridge  bridge constructed of two cantilevers that meet in the middle
     subtype:  Baton_Rouge_Bridge  a cantilever bridge across the Mississippi at Baton Rouge
     subtype:  Commodore_John_Barry_Bridge  a cantilever bridge in Chester, Pennsylvania
     subtype:  Greater_New_Orleans_Bridge  twin cantilever bridges across the Mississippi at New Orleans
     subtype:  Minato_Ohashi_Bridge  cantilever bridge at Osaka, Japan
     subtype:  Quebec_Bridge  a cantilever bridge in Quebec
     subtype:  Queensboro_Bridge  a cantilever bridge across the East River between Manhattan and Queens
     subtype:  Tappan_Zee_Bridge  a cantilever bridge across the Hudson River
  subtype:  cattle_guard__cattle_grid  a bridge over a ditch consisting of parallel metal bars that allow pedestrians and vehicles to pass, but not cattle
  subtype:  covered_bridge__coveredbridge  a bridge whose passageway is protected by a roof and enclosing sides
  subtype:  drawbridge__lift_bridge  a bridge that can be raised to block passage or to allow boats or ships to pass beneath it
  subtype:  footbridge__overcrossing__pedestrian_bridge  a bridge designed for pedestrians
     subtype:  gangplank__gangboard__gangway  a temporary bridge for getting on and off a vessel at dockside
     subtype:  jetbridge  an extendible bridge for loading passengers onto large commerical airplanes; provides protected access to the plane from the gate
  subtype:  overpass__flyover__flypast  bridge formed by the upper level of a crossing of two highways at different levels; "an overpass is called a flyover or a flypast in England"
  subtype:  pontoon_bridge__pontoonbridge__bateau_bridge__floating_bridge  a temporary bridge built over a series of pontoons
  subtype:  rope_bridge  a bridge consisting of ropes
  subtype:  steel_arch_bridge  a steel bridge constructed in the form of an arch
     subtype:  Bayonne_Bridge  a steel arch bridge connecting New Jersey and Staten Island at Bayonne, New Jersey
     subtype:  New_River_Gorge_Bridge  a steel arch bridge across New River at Fayetteville, West Virginia
     instance:  Sydney_Harbor_Bridge
  subtype:  suspension_bridge  a bridge that has a roadway supported by cables that are anchored at both ends
     subtype:  Angostura_Bridge  a suspension bridge across the Orinoco River at Cuidad Bolivar
     subtype:  Benjamin_Franklin_Bridge  a suspension bridge across the Delaware River
     subtype:  Bosporus_Bridge  a suspension bridge across the Bosporus at Istanbul
     subtype:  Bronx-Whitestone_Bridge  a suspension bridge across the East River in New York City
     subtype:  Brooklyn_Bridge  a suspension bridge across the East River in New York City; opened in 1883
     subtype:  Delaware_Memorial_Bridge  a suspension bridge across the Delaware River
     subtype:  George_Washington_Bridge  a suspension bridge across the Hudson River between New York and New Jersey
     subtype:  Golden_Gate_Bridge  a suspension bridge across the Golden Gate
     subtype:  Humber_Bridge  a suspension bridge at Hull England; 4,626 feet long
     subtype:  Kammon_Strait_Bridge  a suspension bridge between Kyushu and Honshu
     subtype:  Mackinac_Bridge  a suspension bridge across the channel between the lower and upper peninsulas of Michigan
     subtype:  Pierre_Laporte_Bridge  a suspension bridge across the Saint Lawrence River at Quebec
     subtype:  Ponte_25'_de_Abril  a suspension bridge across the Tagus River at Lisbon
     subtype:  Tacoma_Narrows_Bridge  a suspension bridge across Puget Sound at Tacoma
     subtype:  Verrazano-Narrows_Bridge  a suspension bridge across the Verrazano Narrows between Brooklyn and Staten Island
     subtype:  Walt_Whitman_Bridge  a suspension bridge across the Delaware River
  subtype:  trestle_bridge__trestlebridge  a bridge supported by trestlework
  subtype:  truss_bridge__trussbridge  a bridge supported by trusses
  subtype:  viaduct  bridge consisting of a series of arches supported by piers used to carry a road (or railroad) over a valley

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