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
Wheeling Suspension Bridge bridge over the east channel of the river to Wheeling Island. Ellett was the chief engineer of the Virginia Central Railroad and in 1853 would build a railroad over the Blue Ridge Mountains at Rock Fish Gap. The new Wheeling bridge would be of a suspension design, since Ellet and Roebling were the foremost authorities. It would also be ninety feet above low water. Their initial calculations relied on the highest smokestacks being about 60 feet, but stack height kept increasing, so the planned bridge came to impede the largest steamboats with high stacks. Ellet received the contract award in