developed on a very large scale in the early part of the first century AD, such as at Las Medulas.

Bridges

Roman bridges were among the first large and lasting bridges ever built. They were built with stone, employing the arch as basic structure. Most utilized concrete as well.Built in 142 BC, the Pons Aemilius, later named Ponte Rotto (broken bridge) is the oldest Roman stone bridge in Rome, Italy.

The biggest Roman

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