Construction of a bridge across the Bonnant Gorge as part of the road bypass around the centre of Saint-Gervais.

- 250-m-long bridge.

- Composite steel–concrete lattice-girder bridge with 170-m-long central span.

- Superstructure depth varies from 11 m at piers to 3.5m mid-span.

- Total width of 11.90 m.

- Built by the progressive cantilever method