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What kind of beam bridges can't be prefabricated?

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Beam bridge is the oldest and the simplest type of the bridge. It appeared when the ... Beam bridge or girder bridge is the simplest and oldest bridge type. It generally consists of ... To complete bridge superstructure, steel plates or precast concrete slabs are placed across the girders which forms a solid platform. read more

I have not seen any curved (in horizontal plane) concrete beams prefabricated. The reason is the provision of pre-stressing tendons as the tendons would exert too much force on the formwork before the concrete is poured. read more

The most used prefabricated concrete elements for bridge construction are prestressed I beam, prestressed box beam, prestressed channel, and slab span. The most used prefabricated concrete elements for bridge construction are prestressed I beam, prestressed box beam, prestressed channel, and slab span. read more

The second main type of prefabricated steel bridge systems were developed during the 1950's as a replacement for deteriorating timber bridges. These systems use prefabricated structural steel plate girders or full-length truss members with steel decking placed on top of these main members. read more

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Types of Bridges
www.macarthurschool.org

Types of Concrete Bridges
www.cbdg.org.uk