Viaduc de Dinan

Bridge in Dinan & Léhon

Le Vieux Pont, Dinan — CC BY-SA 2.0 / Patrick from Compiègne, France

For generations, Le Vieux Pont stood as the sole bridge in Lanvallay, a testament to its historical significance. This striking stone bridge, meticulously maintained, offers stunning views of the Rance River and its surroundings, although it is now reserved for pedestrian use and light vehicles only. By the early 19th century, the bridge had become too narrow and frail to support the growing traffic demands.

Recognizing the need for a more robust crossing, construction of the Viaduc de Lanvallay began with the laying of its first grey granite stone on September 3, 1846. The viaduct, completed and opened to traffic in 1852, spans 250 meters in length and stands 40 meters high, boasting ten arches. It effectively links Lanvallay, perched on the hillside, with the fortified city of Dinan across the river.

The introduction of the viaduct significantly eased local traffic flows, offering an alternative route that bypasses the Port de Dinan Lanvallay and, in turn, alleviates the burden on Le Vieux Pont. It also provides a detour around the steep climb of Rue du Petit-Fort, which had been the only route for pedestrians and vehicles moving between Lanvallay and Dinan. In recognition of its historical value, Le Vieux Pont was designated a Historical Monument in 1903, preserving its legacy for future generations.

The Viaduc de Dinan appears in our Complete Guide to Visiting Dinan & Léhon!

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