A46 - Sermenaz viaduct: improvement of the superstructures of the structure, in terms of banks and TOC

The structure measures 422.50 m in direction 1 and 420 m in direction 2. The work consists of: - restoration of the banks: change of the retaining devices, resumption of the waterproofing survey, repair of the concrete, repair of the drains- resumption of the TPC: demolition and reconstruction of the sills, implementation of the retaining devices, resumption of the waterproofing survey- repair of the concrete on the intrados- repair of the concrete of the supportsAs an indication, the preparation period will begin in March 2024 and the start of the work in May 2024.