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
Hermann Bridge began on the portion of the southern end crossing the Union Pacific Railroad tracks to allow completion of the new Bond bridge. Demolition was completed in June 2008 with demolition of the last pier. Hermann Bridge The Hermann Bridge was a cantilevered truss bridge over the Missouri River at Hermann, Missouri between Gasconade County, Missouri and Montgomery County, Missouri. The bridge formerly carried Route 19 traffic and was closed on July 23, 2007, when the Christopher S. Bond Bridge was opened to traffic. The bridge was built in 1930. Its main span was 401.4 feet and it had a total