Arch bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch.
beam bridge
is the simplest and oldest bridge type. It generally consists of one or more spans which are supported by an abutment or pier at each end.
Drainage systems
a system by which water is drained on or in the soil to enhance production.
piers
a platform on pillars projecting from the shore into the sea, typically incorporating entertainment arcades and places to eat.