as part of the doubling of the Port-Saint-Père diversion, the work to be carried out is the construction of a new crossing of the river "l'acheneau" in doubling the existing work on the north side. Its main features are as follows፦ mixed two-beam type apron consisting of a metal frame set up by launching, connected to a cast concrete bumb in place; - two bank spans of 22.0 m at the axis and 6 central spans 27.0 m at the axis; - each pile consists of a queue of 3 piles of diameter Ø1600mm surmounted by an architectured concrete crowning bedside supporting the supporting apparatus; - each abutment consists of a perched sole/bed base/strikeguard and walls, based on barrettes, supporting the supporting apparatus; - the structure is curved in plane and bias of the supports, relative to the roadway axis of radius 984 m, east constant from C0 to P3 then variable from P4 to C8

market form: ordinary. Awarding of a single contract