The Impressive Engineering of the Roman Arch

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The arch bridge and arched structures allowed the Romans to construct buildings with a far greater ratio of wall openings to height than had ever been possible before. The evidence of such architecture is found in not only the Roman Coliseum but also the labyrinth of arched catacombs that lie beneath historic Rome. Focusing in on the arch bridge, it was a technology never seen before, one that allowed boats to pass under walkways and roads and one that enabled the Roman’s famous series of raised aqueducts.

Why was the arched bridge so crucial to the roman empire, and what structural properties of the arch have that enabled roman architecture to survive relatively in-tact even to modern times?

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