Pont sur la Laye, Roman bridge in Mane, France.

Pont sur la Laye is a 40-metre stone bridge over the Laye with three round-headed arches of 6.90 m, 3.40 m and 1.60 m in height, built of local limestone. The main pier carries large triangular cutwaters on both upstream and downstream sides, and the paved roadway rises steeply from the left bank before descending more gently on the other side.

The main arch was built at the end of the 1st century AD and shows Roman building techniques. The two side arches were added later in the 17th century and expanded the original structure.

Locals call it the pont des trois arches, though only the largest arch is medieval; the two smaller eastern arches and the cutwaters were built in 1626 after a Laye flood washed away the original embankment. Notarial minutes record the mason Anthoine Christol of Mane carrying out that work.

The paved roadway climbs steeply from the left bank to the main arch, then descends more gently to the higher right bank, so the crossing is short but uneven underfoot. The parapet was reported partly removed in 1993 and has since been repaired. The bridge lies just outside the town of Mane, with paths along the Laye.

The two larger arch ribs are only one to two Roman feet thick, giving a rib-to-span ratio below the 1:20 standard of ancient bridges. The main pier is shielded upstream and downstream by large triangular cutwaters of rectangular stone blocks.