Viaduc de la Grande Chaloupe, Concrete viaduct in Saint-Denis and La Possession, Réunion Island, France.

The viaduct de la Grande Chaloupe is a 240-metre prestressed concrete bridge carrying the Route nationale 1 over the ravine of the Grande Chaloupe near its mouth, on the boundary between Saint-Denis and La Possession. Its light grey concrete deck and dark asphalt roadway run as a continuous band supported by piers above the shoreline, with green vegetation on the hillside and the sea beyond.

The viaduct was built starting in 2014 as part of the New Coastal Road project to create traffic routes safe from rockfalls and ocean storms. The project aimed to better connect island regions with each other.

The viaduct carries the route nationale 1 exactly at the boundary between Saint-Denis and La Possession, so drivers cross from one commune to the other mid-span. Its name comes from the ravine it bridges, the Grande Chaloupe, whose mouth lies just below the structure. It was inaugurated on 8 September 2017.

The viaduct carries the route nationale 1 over the Grande Chaloupe ravine near its mouth, on the boundary between Saint-Denis and La Possession. It is a road structure for through traffic, not a pedestrian crossing, so it is seen by driving the coastal road. The deck sits on the hillside above the shoreline, with the ravine below and the sea beyond.

The viaduct is 240 metres long and carries the Route nationale 1 across the mouth of the Ravine de la Grande Chaloupe, exactly on the boundary between Saint-Denis and La Possession. It was inaugurated on 8 September 2017 as part of the New Coastal Road project meant to replace the existing coastal road.