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
France into their environment are large bridges; an example of the way this has been done is the Millau Viaduct. Some famous modern French architects include Jean Nouvel, Dominique Perrault, Christian de Portzamparc or Paul Andreu. The earliest French literature dates from the Middle Ages, when what is now known as modern France did not have a single, uniform language. There were several languages and dialects and writers used their own spelling and grammar. Some authors of French mediaeval texts are unknown, such as "Tristan and Iseult" and "Lancelot-Grail". Other authors are known, for example Chrétien de Troyes and Duke William