Pont de Luzancy

About

The Luzancy Bridge is a road bridge allowing RD 402 to cross the Marne between the municipalities of Luzancy and Méry-sur-Marne, in the Seine-et-Marne department. It is the first prestressed concrete bridge built in France. Two prestressed concrete bridges had preceded it:

the bridge over the Oued Fodda, in 1936, the bridge of Oelle, in Germany, on the motorway between Dortmund and Hanover, in 1938, built by the company Wayss & Freytag according to the plans and with the prestressing equipment provided by Eugene Freyssinet. These first two tests on bridges used pre-tension pre-stressing with adherent pre-stress bars. The Luzancy Bridge is the first bridge using prestressing by post-tension, i.e. energizing after the construction of the part of the structure on which the prestressing cables are tensioned.