Renovation project for the Pont de la Charité on the Loire which crosses the river between Bourg and Auxerre. Registered as a historic monument in 2013, this 210m stone bridge is built on 10 arches and requires the rehabilitation of its masonry.

The project also covers an extension of the bridge by a metal frame with built-in decks supported by concrete beams built on micropiles, connected by intermediary decks of stell. They allow the load take down on the bridge, setting the position of the bridge.