Box girder bridge

Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport.In 1919, Major Gifford Martel was appointed head of the Experimental Bridging Establishment at Christchurch, Hampshire,[1] which researched the possibilities of using tanks for battlefield engineering purposes such as bridge-laying and mine-clearing.[2] A scaled down version of this design, the Small Box Girder Bridge, was also formally adopted by the Army in 1932.Fifty-one people were killed in these failures, leading in the UK to the formation of the Merrison Committee[4] and considerable investment in new research into steel box girder behaviour.If a composite concrete bridge deck is used, it is often cast in-place using temporary falsework supported by the steel girder.
Section of a twin box girder bridge
Erskine Bridge , near Glasgow, Scotland .
Single box girder bridge ( concrete ), Australia . A similar bridge on this river was fabricated ashore and pushed across its pylons.
Single box girder bridge ( steel ), flyover above eastern approach of the San Francisco–Oakland Bay Bridge .
Construction of a box girder viaduct on the North–South Commuter Railway , Philippines .
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