cantilever bridge(redirected from extension bridge)
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Related to extension bridge: Suspension bridges
A bridge formed by two projecting beams or trusses that are joined in the center by a connecting member and are supported on piers and anchored by counterbalancing members.
(Civil Engineering) a bridge having spans that are constructed as cantilevers and often a suspended span or spans, each end of which rests on one end of a cantilever span