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
Millau Millau Millau (; ) is a commune in the Aveyron department in the French Occitanie region in southern France. It is from the Aveyron prefecture headquarters in Rodez. It is located at the confluence of the rivers Tarn and Dourbie. It is surrounded by the landscapes of Gorges du Tarn, Causse du Larzac and Causse Noir. It is part of the former province of Rouergue where they also communicate through a form of Occitan language: the Rouergat dialect. Its inhabitants are called Millavois and Millavoises. The territory of the municipality is part of the Regional Natural Park of Grands Causses.