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
Beipan River Guanxing Highway Bridge highest. The first was the Beipanjiang River Railway Bridge, which opened in 2001 and was the highest train bridge in the world until 2016 when China’s Najiehe Railway Bridge and Qinglong Railway Bridge were opened. The Beipan River Hukun Expressway Bridge, the third bridge to cross high above the Beipanjiang, opened in 2009 on the Guiyang-to-Kunming Highway with a suspension span 1,083 feet (330 m) above the river. Beipan River Guanxing Highway Bridge The Beipan River Guanxing Highway Bridge or Beipanjiang River 2003 Bridge is a 366-metre-high suspension bridge on the Guanxing Highway near Xingbei Town (Xinbeizhen), Zhenfeng County, Guizhou