Millau Viaduct mid-1998. After undergoing wind tunnel tests, the shape of the road deck was altered, and detailed corrections were made to the design of the pylons. When the details were eventually finalised, the whole design was approved in late 1998. Once the Ministry of Public Works had taken the decision to offer the construction and operation of the viaduct as a grant of contract, an international call for tenders was issued in 1999. Five consortia tendered: Piers were built with Lafarge high performance cement. The pylons of the Millau Viaduct, which are the tallest elements (the tallest pylon – ) were
Le Pouget (power station) the south of the river the land rises again to over 600 m. The area is called Les Raspes de Tarn- 30 km to the east is the A75 autoroute and the Viaduc de Millau which crosses the Tarn and Dourdan at the level of the plateau. Further east is the town of Millau and the Karst landscape of the Gorges du Tarn. The impervious granites of the Lévézou make this a suitable location for water capture. The catchment area of Le Pouget is extensive. The Alrance valley was dammed at Villefranche-de-Panat, creating the 197 hectare Lac de Villefranche-de-Panat. The