Bridge closure for motor vehicles

The bridge connecting Sablons and Serrières will be closed to motor vehicles for five nights between October 26 and November 3, 2026, as announced by Isère Department authorities.

Closure times and access

The closure will occur from 9 p.m. to 6 a.m. on the nights of October 26, 27, 28, and 29, and again on Monday, November 2, to Tuesday, November 3. During these periods, the bridge will remain open for pedestrians and cyclists, who can use the sidewalks on the bridge's cantilevered sections.

Detour routes for drivers

Motorists and transporters must take a detour via Saint-Vallier, using the RD86, RD86C, RN7, and RD1082 routes, with crossing of the Rhône via the Saint-Vallier bridge. Temporary signage has been installed to guide drivers.

Bridge usage and history

The bridge, which connects the Isère to the Ardèche above the Rhône, is a heavily used structure. According to a July 2025 communiqué from the Isère Department, the bridge handles approximately 20,000 vehicles per day, including 1,400 heavy trucks.

Construction history and prior work

The current suspension bridge was built between 1948 and 1951. The Department had previously announced a two-week closure in the summer of 2025 to replace parts of the structure and carry out repairs. Monitoring of the bridge had revealed new maintenance needs, and studies were underway on a more extensive structural repair at that time.

Nature of current repairs

The current interventions are described as an urgent repair in the municipal notice relaying the traffic measures. No definitive date for a major structural construction site is indicated in this information. The local radio station Chérie Vallée du Rhône confirmed the nighttime closure and rerouting of motor traffic to Saint-Vallier on October 26.

Traffic information and work schedule

Users can check traffic conditions and disruptions on the departmental network via the Itinisère road service. The first series of work is scheduled to end at 6 a.m. on Friday, October 30, with a final interruption from Monday, November 2, at 9 p.m. to Tuesday, November 3, at 6 a.m.