A40 Highway Closure Near Annemasse Tonight: Traffic Alert

Motorists traveling through the Haute-Savoie region of France face overnight highway closures on the A40 as infrastructure teams begin scheduled maintenance work, according to traffic advisory notices.

The maintenance operations require shutting down traffic in the direction of Paris between specific regional junctions. According to transport alerts issued on September 24, 2026, the closure affects the stretch of the A40 situated between exit number 14 for Annemasse and surrounding connecting points.

Drivers navigating the French motorway network during the overnight hours will need to account for the disruption, which spans the late evening and early morning window. Official traffic bulletins specify that the highway restriction runs from 9:00 PM until 6:00 AM.

Detour Routes and Traffic Management

The temporary closure is designed to allow work crews safe access to the roadway for infrastructure upkeep. Transport authorities have established diversion paths around the work zone to keep regional traffic moving smoothly while the Paris-bound lanes remain blocked.

Motorists approaching the Annemasse sector are advised to follow local signage and digital traffic boards guiding vehicles toward designated alternate routes. Regular traffic flow on the A40 is scheduled to resume fully once the maintenance window closes at 6:00 AM.