Covers the overview of Millau Viaduct

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

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.)