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Presented By:
Shashank Srivastava (AH16107)
MILLAU VIADUCT- A CASE STUDY
• Cable-stayed bridge.
• Crosses the valley of river Tarn.
• Situated in Millau, Southern France along theA75-A71
auto route axis from Paris to Béziers 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
• 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 (médiane), west of Millau (blue
route)
Necessity and Route Selection
• 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 Générale Routière, with GTI (France) and Cintra,
Nesco, Acciona and Ferrovial Agroman (Spain)
Contractors Involved
• 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
• 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
• September 2002: assembly of roadway begins
• November 2002: first piers complete
• 25–26 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.)
Millau viaduct  a case study

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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 Béziers 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
  • 3.
  • 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 (médiane), 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 Générale Routière, 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 • 25–26 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.)