What is the diff between bridge and culvert?

A culvert is a small structure of span less than 6m constructed over small water channels or obstructions to provide the transportation route.
While, bridge is a large structure that is constructed above river, lake or road or railway to provide the transportation route. A bridge span can between 6m to 120m.

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What is Super-Elevation? | Civil Engg. Q and A

Super-elevation is the transverse slope provided to counteract the effect of centrifugal force and reduce the tendency of vehicle to overturn and to skid laterally outwards by raising the pavement outer edge with respect to inner edge.

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