New Coastal road viaduct

Construction of a sea viaduct, parallel to the coast, linking Saint-Denis to La Grande Chaloupe

Briges

France, 2014-2019  

General description

Designed to keep cars away from the risk of cliff rock falls and to withstand cyclonic swells, this sea viaduct runs along the coast for 5.4 kilometres between the north and west of Reunion Island. 

Parallel to the coast, this bridge over the water is made up of seven successive decks of 769 metres each. An exceptional structure in terms of its characteristics and its maritime location, it is also exceptional in terms of the diversity of the tools and methods used to build it. 95% of the elements of the bridge were prefabricated on land in two prefabrication plants and then installed by sea or by launcher.

For offshore operations, a single mega barge was specially equipped for coastal navigation in difficult seas. It was fitted with two overhead cranes and a concrete plant, Zourite mobilised a team of experienced sailors to transport and place on the seabed the elements of the 48 piles of what is now the longest viaduct in French sea waters. 

 

Consortium

BOUYGUES TRAVAUX PUBLICS / VINCI CONSTRUCTION GRANDS PROJETS / DODIN CAMPENON BERNARD / DEMATHIEU ET BARD / SOCIETE BOURBONNAISE DE TRAVAUX PUBLICS ET DE CONSTRUCTION

Project owner

RÉGION RÉUNION   

Locations

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