• A bridge is a structure which is built over some physical obstacle such as a body of water, valley, or road, and its purpose is to provide crossing over that obstacle. It is built to be strong enough to safely support its own weight as well as the weight of anything that should pass over it

A bridge is a structure which maintains the
communication over a physical obstacle, e.g.
– A channel/river,
– A road,
– A railway line or
– A valley.

Bridge Designations
• If it carries road traffic or railway traffic or a pipe line
over a channel or a valley: Bridge
• If it carries the traffic or pipe over a communication
system like roads or railways: Fly-over/Over-Bridge
• Bridge (several small spans) constructed over a busy
locality, a valley, dry or wetland, or forming a flyover
to carry the vehicular traffic: Viaduct

A structure built to span and provide passage over a river, chasm, road, or any other physical hurdle. The function required from the bridge and the area where it is constructed decides the design of the bridge.

Distinctive Features of Slab Bridges
• Usually used for Short spans
• Carry loads in Shear and Flexural bending
• Have sufficient torsional stiffness
• Bearings are not required
• Simple Shattering/formwork is required
• Becomes heavy (increase in D.L) for large spans.
Hollow slabs are sometimes provided for medium
spans.