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
Aguessac D907 goes north-east from the village to Riviere-sur-Tarn and the D167 goes west by a tortuous mountain route to Saint-Germain. The famous Millau Viaduct (Viaduc de la Garrigue) is on the A75 autoroute immediately to the west of the commune. The commune is mixed forest and high country farmland. There are many streams flowing through the commune: the "Ruisseau de Malbose" forms the northern border of the commune, the "Lumansonesque" forms the eastern border flowing into the Tarn which forms the southern part of the eastern border. The Lumansonesque is fed by the "Barbade" with its numerous tributaries which forms