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- Retractable_bridge abstract "A retractable bridge is a type of movable bridge in which the deck can be rolled or slid backwards to open a gap while crossing traffic, usually a ship on a waterway. This type is sometimes referred to as a thrust bridge.Retractable bridges date back to medieval times. Due to the large dedicated area required for this type of bridge, this design is not common. A retractable design may be considered when the maximum horizontal clearance is required (for example over a canal).Two remaining examples exist in New York City (the Carroll Street Bridge (built 1889) in Brooklyn and the Borden Avenue Bridge in Queens). A recent example can be found at Queen Alexandra Dock in Cardiff, Wales, where the bridge is jacked upwards before being rolled on wheels. Helix Bridge at Paddington Basin, London is a more unusual example of the type, consisting of a glass shell supported in a helical steel frame, which rotates as it retracts. The Summer Street Bridge over Fort Point Channel in Boston is another variant type. This bridge is oriented northwest-southeast, with the NW-bound lanes of traffic retracting diagonally to the north, and the SE-bound lanes retracting diagonally to the west.Many retractable bridges are also floating bridges, such as the Hood Canal Bridge, where a retractable span can be withdrawn between two lines of pontoons in the shape of a "U". A similar arrangement exists on the Evergreen Point Floating Bridge and Lacey V. Murrow Memorial Bridge.Historical examples of designs for retractable bridges include those by Leonardo da Vinci [1], and Agostino Ramelli.".
- Retractable_bridge thumbnail Uppsala_Ultunabron02_2005-06-16.jpg?width=300.
- Retractable_bridge wikiPageExternalLink genscheda.asp?appl=LIR&xsl=modello&lingua=ENG&chiave=101089.
- Retractable_bridge wikiPageExternalLink carroll-street-bridge.
- Retractable_bridge wikiPageID "2379092".
- Retractable_bridge wikiPageRevisionID "600239858".
- Retractable_bridge ancestorNames Plate_girder_bridge.
- Retractable_bridge carries "Automobile, pedestrians".
- Retractable_bridge descendentNames "None".
- Retractable_bridge design "Medium".
- Retractable_bridge falsework "No".
- Retractable_bridge hasPhotoCollection Retractable_bridge.
- Retractable_bridge imageTitle "Vindbron in Uppsala".
- Retractable_bridge material "Steel".
- Retractable_bridge movable "Yes".
- Retractable_bridge siblingNames Folding_bridge.
- Retractable_bridge siblingNames Submersible_bridge.
- Retractable_bridge siblingNames Vertical-lift_bridge.
- Retractable_bridge spanRange "Short".
- Retractable_bridge typeName "Retractable bridge".
- Retractable_bridge subject Category:Moveable_bridges.
- Retractable_bridge type Artifact100021939.
- Retractable_bridge type Bridge102898711.
- Retractable_bridge type MoveableBridges.
- Retractable_bridge type Object100002684.
- Retractable_bridge type PhysicalEntity100001930.
- Retractable_bridge type Structure104341686.
- Retractable_bridge type Whole100003553.
- Retractable_bridge type YagoGeoEntity.
- Retractable_bridge type YagoPermanentlyLocatedEntity.
- Retractable_bridge comment "A retractable bridge is a type of movable bridge in which the deck can be rolled or slid backwards to open a gap while crossing traffic, usually a ship on a waterway. This type is sometimes referred to as a thrust bridge.Retractable bridges date back to medieval times. Due to the large dedicated area required for this type of bridge, this design is not common.".
- Retractable_bridge label "Puente retractable".
- Retractable_bridge label "Retractable bridge".
- Retractable_bridge label "Rolbrug".
- Retractable_bridge label "Schubbrücke".
- Retractable_bridge sameAs Schubbrücke.
- Retractable_bridge sameAs Puente_retractable.
- Retractable_bridge sameAs Rolbrug.
- Retractable_bridge sameAs m.077rmm.
- Retractable_bridge sameAs Q1758233.
- Retractable_bridge sameAs Q1758233.
- Retractable_bridge sameAs Retractable_bridge.
- Retractable_bridge wasDerivedFrom Retractable_bridge?oldid=600239858.
- Retractable_bridge depiction Uppsala_Ultunabron02_2005-06-16.jpg.
- Retractable_bridge isPrimaryTopicOf Retractable_bridge.