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For large spans ______ are used.1. guided bridges2. girder brides3. roller bridges4. trussed bridges

Answer» Correct Answer - Option 4 : trussed bridges

Concept:

The various economical span ranges which are, generally, adopted for a different types of bridges are specified below in the tabulated form:

Type of Bridge

Span range

Arch Bridge

Small spans of 3 to 15m in masonry

Slab Bridge

Up to 9m.

Girder and Beam Bridge

10 to 60m

Truss Bridge

30 to 375 m simply supported and up to 550m with cantilevered

Suspension Bridge

Over 500 m up to 1400 m.

It is clear from above that for a large spans; truss and suspension bridges are preferred. The suspension bridge is not given in option. 



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