BIM Workflow
Client
French state, direction générale des territoires et de la mer de Guyane
Final design, work supervision and contract management
Egis
*Picture credits: Direction générale des territoires et de la mer de Guyane
The new Pont du Larivot (Larivot Bridge) is an outstanding structure, spanning 1,306 meters across the Cayenne River in French Guiana, downstream of the existing bridge. It will connect the municipalities of Matoury and Macouria, enhancing access to major infrastructures such as the Cayenne-Félix Eboué International Airport, the Kourou Space Center, and the hospitals in Cayenne and Kourou.
With a capacity for heavy loads of up to 120 tons (compared to 72 tons for the existing bridge), the new Larivot Bridge will also feature lanes suitable for various active transportation modes such as pedestrians, cyclists and mopeds.
The deck, with a total width of 14.2 m, is a prestressed and precast concrete box girder with two webs. The main spans (70 m) are built using the balanced cantilever method with a launching truss of 140 m long. It comprises 19 piers built in the river and founded on bored piles anchored in the extremely hard and irregular bedrock.
