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A retractable bridge is a type of moveable bridge in which the deck can be rolled or slid backwards to open a gap while traffic crosses, usually a ship on a waterway. This type is sometimes referred to as a thrust bridge. The bridge is retracted to the right. Borden Avenue Bridge, Long Island City. Retractable bridges date back to medieval times.
Table bridge – a lift bridge with the lifting mechanism mounted underneath it; Retractable bridge (Thrust bridge) – the bridge deck is retracted to one side; Submersible bridge – also called a ducking bridge, the bridge deck is lowered into the water; Tilt bridge – the bridge deck, which is curved and pivoted at each end, is lifted at ...
Retractable bridge (Thrust bridge) – the bridge deck is retracted to one side; Submersible bridge – also called a ducking bridge, the bridge deck is lowered into the water; Tilt bridge – the bridge deck, which is curved and pivoted at each end, is lifted at an angle; Swing bridge – the bridge deck rotates around a fixed point, usually ...
The bridge, composed of stone abutments and a timber deck, was demolished in 1917. The oldest crossing still standing is High Bridge, built in 1848 to carry the Croton Aqueduct from Manhattan to the Bronx over the Harlem River. [6] This bridge was built to carry water to the city as part of the Croton Aqueduct system.
Pages in category "Retractable bridges" ... Evergreen Point Floating Bridge (1963) H. Hood Canal Bridge; S. Summer Street Bridge (Boston) T. Telescopic Bridge, Bridgwater
That type of bridge is not hinged, and remains horizontal when it is rolled inside the gates of a fort. Modern versions are called retractable bridges or thrust bridges. One particular version of the rolling bridge type was known as the Guthrie rolling bridge, examples of which may still be seen at Fort Nelson, Portsmouth.
A retractile drawbridge is a rare type of moveable bridge in which the span is pulled away diagonally on rails. It is a variant of the retractable bridge. Only four examples are known to exist in the United States. [1] It is believed to have been invented by T. Willis Pratt in the 1860s.
The Borden Avenue Bridge is a retractable bridge in New York City, [3] in the Long Island City neighborhood of Queens. It carries vehicular and pedestrian traffic across Dutch Kills, a tidal waterway that is a tributary of Newtown Creek. [4] The main span is 84 feet (26 metres) long, and it retracts by sliding on rails.