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Heavy plate for the Viaduc de Millau

The world's longest cable-stayed bridge made of DI-MC

The small town of Millau, in the South of France, is located directly on Autoroute A 75, the country's second important north-to-south link, after the Autoroute du Rhône. The town achieved fame - or perhaps "notoriety" would be the better word - as a result of the gigantic traffic jams formerly occurring there in the summer months, as a result of the gap in the autoroute caused by the wide and deep valley of the Tarn. Since late-2004, these have been a thing of the past, thanks to a bridge of superlatives in every sense, designed by Sir Norman Foster. At 2,460 meters in length, and a height of 343 meters, this is the world's highest such structure, topping even the Eiffel Tower. In addition, it is also the world's longest multiply cable-stayed bridge.

For this now world-famous viaduct, Dillinger Hütte supplied the almost unimaginable quantity of 43,000 tonnes of heavy plate. The center box girder of the carriageway deck and parts of the towers, amounting, in all, to nearly 50 percent of the structure, were fabricated from DI-MC 460, a thermomechanically rolled fine-grained structural steel. The high mechanical strength of this material reduced the weight of the deck structure and thus facilitated the use of the place-and-thrust method for construction of the bridge. The excellent weldability possessed by DI-MC 460 made it possible to dispense with preheating of components prior to welding. DI-MC thus directly enabled the Viaduc de Millau to achieve yet another world record - an incredibly short construction period of only thirty-eight months, and costs of only 400 million Euro.

Facts

Opening date 16.12.2004
Country France
Quality S355K2G3; S355N/NL; S460N, DI-MC 460; S460 QL1
Architect Norman Foster
Building owner Compagnie Eiffage du Viaduc de Millau
Length 2,460 m
Width 32 m
Height 345 m
Delivered quantity 43,000 t
Stress analysis: Greisch, EEG SImescol, Thàles E et C, Serf, STOA Eiffage, Arcadis
Concrete works: Eiffage Construction
Constructional steelwork: Eiffel Construction Métallique

Contact

 Natalie Federmeyer
Natalie Federmeyer

Head of Sales Department, Wind Power & Construction

Tel.: +49 6831 473449
Fax: +49 6831 47992685
E-Mail

Dillinger

Contact

 Timm Condé
Timm Condé

Category Manager Sales, Steel Construction

Tel.: +49 6831 472196
Fax: +49 6831 47992681
E-Mail

Dillinger

Contact

Dr. Tobias Lehnert
Dr. Tobias Lehnert

Marketing & Technical Support

Tel.: +49 6831 472394
Fax: +49 6831 473089
E-Mail

Dillinger

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Contact

AG der Dillinger Hüttenwerke
Werkstraße 1
66763 Dillingen/Saar

Tel.: +49 6831 47 0
Fax: +49 6831 47 2212
E-Mail: info@dillinger.biz

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Heavy-plate products
  • Non-alloy structural steels
  • Normalised fine-grained structural steels
  • Thermomechanically rolled fine-grained steels
  • High-strength quenched & tempered fine-grained steels
  • High-temperature steels
  • Cryogenic steels
  • Weathering-resistant steels
  • Case-hardening & quenching & tempering steels
  • Security steels
  • Tool & mould steels
  • Wear-resistant steels
  • Sour-gas-resistant steels
  • Offshore steels
  • Linepipe steels
Applications
  • Steel Construction
  • Hydropower Engineering
  • Pressure Vessels
  • Earthmoving Machinery & Mining
  • Mechanical Engineering
  • Offshore Oil & Gas
  • Large Diameter Pipes
  • Shipbuilding & Jackup
  • Plastics and Concrete Moulds
  • Wind Power
  • Protection
  • Steel & Service Center and Plate Processing
Proprietary steels
  • DILLIDUR
  • DILLIMAX
  • DI-MC
  • DIWETEN
  • DICREST
  • DIWA
  • DILLINAL
  • DIROS
  • DIMO
  • DIFENDER
  • DICUT
  • DI-RACK
  • DIGEAR
  • DI-TANK
  • DIWIND
  • Other steels
Plates on stock and steel services
  • Heavy plate services ex stock
  • Heavy plate services ex mill
By-products & Chemical laboratrory
  • By-products
  • Chemical laboratrory services