Pont du Diable

Pont du Diable is the ruin of a medieval bridge over the Aude river, standing roughly 500 metres northwest of Alet-les-Bains, a small spa town in the Aude department of southern France. Only one pier of the original structure has survived, and today it forms the focal point of a short, scenic walk for anyone exploring this historic riverside town.

What will you see there?

The bridge originally rested on two piers and carried three arches set high above the low-water line of the river. Only the second pier still stands, reaching a height of about four metres. The lone stone pillar rises directly from the riverbed, framed by the greenery of the Aude valley, and gives a real sense of the scale of the original crossing even though the rest of the structure collapsed long ago. It is precisely this fragmentary quality — a single tall pier standing in an open landscape — that makes the ruin memorable to visit.

What is the history behind it?

The bridge once linked Alet to Limoux, forming part of an old route that, after crossing the Aude, climbed Mont Brau and continued on through Cournanel. This road was still in use as late as 1573, when Alet was seized by Protestant forces during the French Wars of Religion. Historians disagree on why the bridge eventually fell: the traditional explanation points to a major flood in 1625, but it is equally plausible that the crossing was deliberately destroyed to cut off the route north of Alet from Protestant troops. The structure has also been referred to locally as the "Roman bridge" (pont romain), reflecting a long-standing belief in its ancient origins.

Where does the name come from?

The name Pont du Diable — "Devil's Bridge" — follows a folk pattern found at dozens of old bridges across Europe. Local legend held that a structure this impressive could not have been the work of ordinary builders, so people credited it to the devil, said to have raised the whole bridge in a single night. The same story is attached to many similar crossings in France, but in Alet-les-Bains it became a lasting part of local tradition.

What is its heritage status?

The bridge ruins were listed as a monument historique by decree of 14 April 1948. That protected status recognises the remains as evidence of medieval engineering in the region and as part of the cultural landscape of the Aude valley, closely tied to the history of nearby Alet-les-Bains and its abbey.

How do you get there, and when should you visit?

The ruins lie within easy walking distance of the centre of Alet-les-Bains, right on the bank of the Aude, making them a simple addition to a stroll through the town and its abbey ruins. The best time to visit is from spring through early autumn, when the Aude valley is at its most scenic and lower water levels make the remaining pier easier to appreciate in full. No ticket or booking is required — it is a freely accessible historical and scenic stop along the riverside paths.

Frequently asked questions

Is there more left of the bridge than a single pier? No — of the original structure, which had two piers and three arches, only one pier survives, standing about four metres tall.

Why is it called the Devil's Bridge? Local legend claimed the bridge was too impressive to have been built by people, so its construction was attributed to the devil, said to have completed it overnight.

What caused the bridge to be destroyed? It is not certain — it may have been the flood of 1625, or a deliberate demolition during the Wars of Religion to block the route used by Protestant forces.

Is it free to visit the ruins? Yes, the site is open to the public at no charge, reachable on foot along the Aude river near Alet-les-Bains.