Vaison-la-Romaine Roman Bridge, Roman bridge above Ouvèze River in Vaison-la-Romaine, France.

The Vaison-la-Romaine Roman Bridge is a stone structure crossing the Ouvèze River with a single arch spanning roughly 17 meters. Its design features the distinctive curved vault typical of Roman construction from that period.

Built in the 1st century AD, the bridge carried the road between the Roman town on the right bank of the Ouvèze and the hill of Sus-Auze. It was listed as a Monument historique in 1840. A flood on 15 August 1616 swept away its parapets, and German demolition at the end of World War II damaged the arch, repaired in 1953 with some voussoirs replaced. On 22 September 1992 it withstood the Ouvèze flood that killed 37 people, losing only its parapet.

The bridge links the right bank, with the town centre and the Roman ruins, to the medieval Haute-Ville on the left bank. Its survival is celebrated locally: on 22 September 1992 it withstood the Ouvèze flood that killed 37 people, losing only part of its parapet. A small stone plaque is set into the left face above the arch.

The bridge is freely accessible and allows visitors to cross from the lower modern town to reach the medieval upper section. Walking across the ancient stone requires careful steps, particularly when wet, but the crossing takes just a few minutes.

The arch is not a single vault but five parallel semicircular arches, joined only at their keystones, each made of eleven wedge-shaped stones. The span of 17.20 m is wider than the river channel of about 9.50 m at this narrowing. A small stone plaque is set into the left face above the arch.