beam bridge

Bridge whose deck is composed of one or several beams, which are supported by piers across the open space.

overpass

Raised part of a road or highway on which traffic flows over another highway or obstacle.

pier

Sturdy load-bearing component placed at intervals to support the bridge’s beams.

underpass

Lowered part of a thoroughfare, enabling traffic to flow under another roadway or obstacle.

deck

Set of components making up the structure that carries the bridge’s traffic lanes.

abutment

A pier’s point of support on firm ground.

parapet

Chest-high barrier on each side of the deck, preventing people and vehicles from falling off.

continuous beam

Extended load-bearing part supported by abutments and piers.