arch bridge
A bridge whose deck is supported from below by one or more arches carrying loads toward their end supports.
An arch bridge is a bridge whose deck is supported from below by one or more arches reaching between the ends or between successive piers. Each arch directs the load of the deck onto its two sides, permitting the span. Arch bridges can be built of metal, masonry, concrete, or other materials.
The supporting arch carries load primarily in compression toward its ends. The form does not depend on using stone; metal and concrete arches can provide the same supporting arrangement.
One arch can cross a gap, or several arches can extend between successive piers. The curved supports beneath the deck distinguish this form from a simple beam bridge.