A transporter bridge, also known as a ferry bridge or aerial transfer bridge, is a type of movable bridge that carries a segment of roadway across a river. The gondola is slung from a tall span by wires or a metal frame. The design has been used to cross navigable rivers or other bodies of water, where there is a requirement for ship traffic to be able to pass. This has been a rare type of bridge, with fewer than two dozen built. There are just twelve that continue to be used today, including one converted into a lift bridge and one designed as, but not yet operating as, a transporter bridge.
Image: Zubia jun
Image: Charente Maritime Rochefort pont transbordeur sud
Image: Aerial lift bridge duluth mn
Image: Transporter Bridge, from Coronation Park
A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats or barges. In American English, the term is synonymous with drawbridge, and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which drawbridge refers to only a specific type of moveable bridge often found in castles.
Madison Street Bridge, a bascule bridge over the Chicago River in Chicago, IL
The Rode Brug (Red Bridge) across the Vecht river in Utrecht, Netherlands
The Marine Parkway–Gil Hodges Memorial Bridge in New York City