SNCF Connection Work in Bois-le-Roi: Closures and Diversions Expected

SNCF substation connection work will lead to road closures and diversions in several areas of Bois-le-Roi starting October 19th.

Generic image of irrigation pipes on a red earth construction site.
AI

Generic image of irrigation pipes on a red earth construction site.

Connection work for the SNCF substation is underway in Bois-le-Roi, causing road closures and diversions in several streets from October 19th to November 10th.

Connection work for the SNCF substation is continuing in Bois-le-Roi. The company ECR Environnement is currently carrying out preparatory surveys for directional drilling, which will allow for cable passage.
Starting Monday, October 19th, the drilling equipment will be installed on Avenue de la Forêt, near Chemin des Coureurs. In parallel, the company will proceed with pulling cables along the entire project length.
Interventions are scheduled for the night of November 9th to 10th, from 9 PM to 5 AM, affecting several traffic routes.
Closures and diversions will affect Avenue de la Forêt (between Rue Pasteur and Avenue Foch), Avenue Galliéni (between Rue Pasteur and Avenue Foch), Rue des Sesçois, Avenue Paul Doumer (between Barbeau and Foch), and Avenue Foch (between Rue de la Chapelle and Avenue Paul Doumer).
Diversion routes will be in place from Avenue Paul Doumer (via Leclerc, Castellani, Carnot, République, Presche, Colinet) and from Avenue de la Forêt (via the same streets).
Pedestrians and motorists are advised to follow the signage near the intervention areas. These steps will allow for the gradual completion of the construction site and the restoration of the affected areas. The municipality thanks residents for their understanding.
Based on information from the official source: Mairie de Bois-le-Roi (09/11/2026)