It takes up the entire French autoroutes A71 and A75.
The road uses the highest major road bridge in Europe, and the second highest in the world, the Millau Viaduct, 2,460 m (8,070 ft) long and 270 m (890 ft) high from ground to road. The route also passes (but does not cross) the Viaduc de Garabit, which was built in the 1880s by Gustave Eiffel.