The project includes France's longest offshore viaduct. The 5.4km viaduct will connect La Reunion’s administrative capital Saint Denis with La Grande Chaloupe.

It will be built by a consortium made up of Vinci Construction subsidiaries Vinci Construction Grands Projets and Dodin Campenon Bernard together with Bouygues Travaux Publics and Demathieu Bard.

The consortium’s winning solution involves prefabricating 95% of the structures on land.

The viaduct - a major part of the coastal highway - will replace the existing coastal road between Saint Denis and La Possession, which is exposed to falling rocks and flooding.

Work on the US$948m viaduct will be completed in 2018.