Viaduc routier du Viaur, Road bridge in Tanus, France

The Viaur Road Bridge is a modern highway structure crossing the valley of the Viaur River and linking two French departments. It supports four lanes of traffic on the national route and uses a box-girder construction method to span the deep valley.

The Viaur road viaduct was completed in July 1998 and opened to traffic in August 2000. It carries four lanes of the RN 88 between Tauriac-de-Naucelle in Aveyron and Tanus in Tarn, replacing the crossing lost when the earlier viaduct was destroyed in World War II.

The bridge carries the name of the Viaur, the river it crosses, and is also called the Tanus bridge after the Tarn commune on its eastern bank. It links Tauriac-de-Naucelle in Aveyron with Tanus in Tarn, and its four lanes form part of national route 88. The nearby railway viaduct of the same valley, completed in 1902, is a separate structure.

The bridge sits on national route 88 and is readily accessible to drivers crossing the region. Travelers will find straightforward passage in both directions with consistent traffic flow.

The road viaduct was completed in July 1998 but only opened to traffic in August 2000, so it stood finished for about two years before carrying vehicles. Its deck rests on slender light-grey concrete piers above a wooded valley, and the nearby Viaur railway viaduct offers a comparison with earlier bridge building.