Civil engineering : Structural engineering

Meaux viaduct

SEINE-ET-MARNE, FRANCE

Integrated into the Meaux western bypass, the viaduct crosses the Marne Valley spanning the Marne River, the Ourcq Canal, the Chalifert Canal, the Paris-Strasbourg railway line and a secondary road. It is an incrementally-launched bridge 1,200 metres long and 31 metres wide, and was the result of a performance-based invitation to tender. The bridge deck was built using RAZEL-BEC's patented planotubular webs structure©, an innovative technique combining steel plates and tubes with concrete slab segments to make the bridge lighter.

Highlight: 54,000 tonnes to be moved. Solution:
- curved deck constructed on the banks of the valley;
- piers and temporary support structure erected over the Marne (93 metres);
- the 54,000 tonne structure slid slowly into place;
- traffic opened in both directions.

Contracting authority : State - French Ministry of Transport, Facilities, Tourism and the Sea
Project management : Seine-et-Marne Departmental Facilities Department
Architect : Berdj Mikaelian

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