The Millau Viaduct is a large cable-stayed road bridge that spans the valley of the river Tarn near Millau in the Massif Central mountain range in southern France. Designed by the structural engineer Michel Virlogeux and architect Norman Foster, at 2.4km long, and 270m above the river at its highest point, it is the tallest vehicular bridge in the world.
An interesting fact is that the Millau Viaduct is not straight. The bridge was built with a slight curve that has a radius of 20km. Such a high straight road could induce a sensation of floating for drivers, which is remedied by the curve.