Tarn (river) a mean flow of approximately . The Millau Viaduct spans the valley of the Tarn near Millau, and is now one of the area's most popular attractions. The tributaries of the Tarn include: The Tarn separates the Narbonne and Aquitaine basins. The Tarn passes through the following departments and towns: The Millau Viaduct, the tallest bridge in the world, carrying the A75 autoroute across the Tarn Gorge near Millau, opened in December 2004. The Tarn is famous for its brutal floodings, which are the most dangerous in Europe along with the Danube. The flooding of March 1930 saw the Tarn
Pfrimm Viaduct Pfrimm Viaduct The Pfrimm Viaduct (), colloquially also called the Marnheim Bridge ("Marnheimer Brücke"), was a railway bridge near Marnheim in the county of Donnersbergkreis in the German state of Rhineland-Palatinate. It was built as a stone arch and truss bridge from 1872 to 1874, was 260 metres long and 30 metres high, and carried the Donnersberg Railway from Hungerberg over the valley of the Pfrimm to the Zeller Valley Railway, which is only open at weekends today. The bridge is a protected monument and forms the "Gateway to the Zellertal" ("Tor zum Zellertal"). The viaduct was built east of