Millau viaduct a case study
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The Millau Viaduct is a cable-stayed bridge that crosses the Tarn Valley in southern France. It is the tallest bridge in the world, with pylons reaching 343 meters high. The bridge was built to alleviate traffic congestion on the major route from Paris to Spain. Construction began in 2001 and was completed in 2004, ahead of schedule. A consortium of international contractors was involved in building the complex bridge, which involved constructing tall pylons, assembling the bridge deck between them, and installing cables to support the deck.
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Millau viaduct a case study
- 1. Presented By: Shashank Srivastava (AH16107) MILLAU VIADUCT- A CASE STUDY
- 2. Cable-stayed bridge. Crosses the valley of river Tarn. Situated in Millau, Southern France along theA75-A71 auto route axis from Paris to B辿ziers and Montpellier. Tallest bridge in the world(summits at 343.0 metres(1,125 ft) above the base of the structure). 17th highest bridge deck in the world, being 270 metres (890 ft) between the road deck and the ground below. Introduction
- 4. Problems with traffic on the route from Paris to Spain along the stretch passing through the Tarn valley near the town of Millau. Resulted in congestion in the summer from holiday traffic. Initially, four routes were selected and were carefully examined. Great Eastern (grand Est) (green route) Great Western (grand Ouest) (black route) Near RN9 (proche de la RN9) ( red route) Intermediate (m辿diane), west of Millau (blue route) Necessity and Route Selection
- 5. Compagnie Eiffage du Viaduc de Millau (CEVM), led by Eiffage PAECH Construction Enterprise (Poland) A consortium led by the Spanish company Dragados, with Skanska (Sweden), and Bec (France) French companies ASF, Egis, GTM, Bouygues Travaux Publics, SGE, CDC Projets, Tofinso and the Italian company Autostrade A consortium led by G辿n辿rale Routi竪re, with GTI (France) and Cintra, Nesco, Acciona and Ferrovial Agroman (Spain) Contractors Involved
- 6. Construction of foundation for pylons Construction of Pylons Assembling the bridge deck with anchoring towers Erection of eight temporary towers providing additional support Rolling the bridge deck lengthwise Assembling the remaining anchoring towers with the pylon Finishing works Construction Phase
- 7. 16 October 2001: work begins 14 December 2001: laying of the first stone January 2002: laying pier foundations March 2002: start of work on the pier support C8 June 2002: support C8 completed, start of work on piers July 2002: start of work on the foundations of temporary, height adjustable roadway supports August 2002: start of work on pier support C0 Project Timeline
- 8. September 2002: assembly of roadway begins November 2002: first piers complete 2526 February 2003: laying of first pieces of roadway November 2003: completion of the last piers (Piers P2 at 245 m (804 ft) and P3 at 221 m (725 ft) are the highest piers in the world.) 28 May 2004: the pieces of roadway are several centimetres apart, their juncture to be accomplished within two weeks 2nd half of 2004: installation of the pylons and shrouds, removal of the temporary roadway supports 14 December 2004: official inauguration 16 December 2004: opening of the viaduct, ahead of schedule 10 January 2005: initial planned opening date Project Timeline(contd.)