With a length of 5,400 m, the viaduct at sea is a key work on the Nouvelle Route du Littoral project, which aims to replace the current cliff road between Saint-Denis and La Possession, which is heavily exposed to the risks of landslides and submersed by swell or during cyclonic episodes. For this project, more than 95% of the works will be prefabricated on land before being laid mainly by sea.
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