Millau Viaduct: Creating an Engineering Marvel
Case Code: PROM006 Case Length: 21 Pages Period: 2001-2004 Pub Date: 2006 Teaching Note: Not Available |
Price: Rs.400 Organization: Eiffage TP Industry: Construction Countries: France Themes: Project Management |
Abstract Case Intro 1 Case Intro 2 Excerpts
Background Note
The original A75 motorway, which linked Clermont Ferrand and Beziers, passed through the town of Millau in the middle of the Tarn Valley. Motorists had to descend into the valley through a steep road and cross the town of Millau, to reach the other end of the valley. The roads were generally crowded and the situation worsened in the summer months when motorists took close to three hours to cross the valley. Therefore, the French authorities commissioned studies to find a solution to the traffic bottleneck without affecting the scenic beauty of the Tarn Valley.
The initial studies to find a solution to the traffic problems started in 1988. These studies came up with four possible solutions.
The 'eastern option' involved the construction of a bypass to the east of Millau town and included two large bridges over the rivers Tarn and Dourbie. The 'western option' involved the construction of a bypass almost 12 km to the west of Millau and the construction of four bridges.
The 'following the path of Route Nationale 9 option' passed right through Millau but at the cost of unwanted intrusion on the town and several technical difficulties. The last option - the 'median option' - meant going over to the other side through the middle of the valley.
The 'median option' was considered to be the most suitable as it avoided several geological problems encountered in the other options. Implementation of this option was to have minimal environmental impact, offer better safety, and involve lower costs. This option also received overwhelming support from the local populace.
On June 28, 1989, the median option was selected by Aix-en-Provence's Centre d'Etudes Techniques de l'Equipement (CETE), a public consulting firm under the GoF with the authority to propose technical solutions for traffic management...
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