cantilever bridge(redirected from extension bridge)
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Related to extension bridge: Suspension bridges
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
cantilever bridge[′kant·əl‚ē·vər ¦brij]
A fixed bridge consisting of two spans projecting toward each other and joined at their ends by a suspended simple span.