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PROJECT INFORMATION

  • Grevenmacher / Wellen
  • Luxembourg/Germany
  • Sept. 2012 - Oct. 2013
  • Engineering offices:
    Structural engineering:
    INCA Ingénieurs Conseils Associés S.à.r.l.
    Schroeder & Associés
    Special Techniques:
    Geopartner Gmbh
    RUK Gruppe Luxembourg s.a.
  • Client:
    Administration des ponts et chaussées, Division des Ouvrages d’Art
  • Contractor:
    CDCL - Compagnie de Construction Luxembourgeoise
  • Photos:
    © CDCL & ArcelorMittal

LINKS


  Product catalogue: Sheets & Heavy Plates for structures

The new Grevenmacher Bridge


After 13 months of construction works, the new  steel bridge across the Moselle connecting Grevenmacher in Luxembourg with the German town of Wellen was inaugurated in October 2013.

With a total length of 213 m and a free span of 113,8 m between the supporting piles, the new steel bridge replaces its predecessor made of concrete which was built in 1955. The reason why Luxembourg authorities decided to rebuild the bridge were the advanced deterioration of its prestressing cables which presented safety issues and the high intensity of daily traffic on the bridge.

The project included the demolition of the old bridge, the transformation of the reinforced concrete piles in the river, the transport and construction of the new bridge. The main constraints of the works were the reduced construction time of 4 and a half months to minimise the traffic disruption and the long central span without additional supports  in the water.

The light and elegant design of the new steel arch and orthotropic deck bridge with 4 spans expresses the strong and vibrant union of the two neighbouring countries. The integration of the secondary spans with the main span is characterized by a continuous arch passing through the quadripodes under the deck and terminating on the supporting piles, from where  they rise again symmetrically on each side towards the riverbanks.

With a total weight of around 2.000 tonnes the bridge spans freely on almost 114m, the width of the deck varies between 12.50 to 16.10 m.

ArcelorMittal Flat Carbon Europe supplied around 750t of custom-made  plates for  the construction of key bridge arch components, in steel qualities between S355J2+N up to S460N, accompanied with Z qualities and US tests and produced at the company's mill in Gijón, Spain. The S460N high strength steels offer greater strength and allow to minimise the thickness of the prefabricated components.

Starting in January 2013, the components of the bridge were manufactured by Atelier Poncin in Ocquier  (Belgium), and Baudin Chateauneuf in Châteauneuf-sur-Loire (France), and transported by road to Luxembourg's river port at Mertert, where they were assembled 2 months later. The old bridge was demolished during the annual lock closure from 4 to 11 June, in August the new steel arch was put into place.

Therefore, the 1.600 tn central piece was  fitted onto a special pontoon to bring it 4 km upstream to its final location in Grevenmacher, where it was rotated 90º and  positioned on top of the supporting piles on either side of the river. During this 3-hour-operation the river traffic was closed, the pontoon was accompanied by various tugboats and the river control

The new bridge was then linked to the roads and the finishing works took until October 2013, when it was oficially opened.

The Grevenmacher bridge is an important link between both countries, enabling thousands of workers to go to Luxembourg every day. According to a study conducted previous to the construction of the new Grevenmacher Bridge, 17.000 vehicles passed the old reinforced concrete bridge on a daily basis. The new construction eases this extensive traffic and its modern and aesthetic design creates harmony with its green surroundings.

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