Construction site: new Larivot bridge in Cayenne, French Guiana, France

An important milestone has just been reached on our site: the first river pile has been finalized. These river piers are made using an unusual method: they are based on 4 cased piles on which a prefabricated waterproof concrete box is suspended, then pushed into the water by sliding along the tubes. The box is finally restrained to counter Archimedes' thrust. Once dry, the support is carried out in several phases with the sole, then one to several pile lifts and to finish the header. Operations are carried out using a fleet of barges dedicated to each task. (Client: Joint-Venture Soletanche-VCGP-Dodin Campenon Bernard)