Roman bridge
Bridges built by ancient Romans / From Wikipedia, the free encyclopedia
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For a list, see List of Roman bridges. For the railway station in Wales, see Roman Bridge railway station.
The ancient Romans were the first civilization to build large, permanent bridges.[1] Early Roman bridges used techniques introduced by Etruscan immigrants, but the Romans improved those skills, developing and enhancing methods such as arches and keystones. There were three major types of Roman bridge: wooden, pontoon, and stone. Early Roman bridges were wooden, but by the 2nd century stone was being used. Stone bridges used the arch as their basic structure, and most used concrete, the first use of this material in bridge-building.