The Millau Viaduct is a cable-stayed bridge that spans the valley of the river Tarn near Millau in southern France. It is the tallest bridge in the world with one mast's summit at 343.0 metres (1,125 ft) above the base of the structure. It is the 12th highest bridge deck in the world, being 270 metres (890 ft) between the road deck and the ground below. It was formally dedicated on 14 December 2004, inaugurated on the 15th, and opened to traffic on the 16th. [Wiki]