5 main types of bridges:Truss bridgesArch bridgesCable-stayed bridgesBeam bridgesSuspension bridges

BRIDGE

Forces that act on a bridge:

Compression and tension are present in all bridges. They are both able to damage the bridge if there is too much weight or if other forces act upon it.

A bridge is:

A structure carrying a road, path, railroad, or canal across a river, ravine, road, railroad, or other obstacle.