Le viaduc de Millau
The Millau viaduct is a cable-stayed bridge crossing the Tarn valley, in the Aveyron department, in France. Carrying the A75, it provides the junction between the Causse Rouge and the Causse du Larzac by crossing a gap 2,460 meters long and 343 meters deep at the highest point, in a high quality panorama and with winds likely to blow at more than 200 km/h.
A development of national and international importance, and a link in the A75 motorway linking Clermont-Ferrand to Béziers, this project required thirteen years of technical and financial studies. Studies began in 1987 and the structure was commissioned on December 16, 2004, just three years after the first stone was laid. At a cost of 320 million euros, it was financed and built by the Eiffage group within the framework of a concession, the first of this type, with a duration of 78 years.