Every autumn brings its share of major roadworks on the French motorway network, and this time, one of the major routes in the Massif Central is targeted. The A75, an essential artery for connecting central France to the Mediterranean without tolls along most of its length, will experience significant disruptions at the Pas de l'Escalette. This iconic tunnel in southern Hérault requires a complete overhaul of its safety systems. Between September 21 and October 30, 2026, traffic will be completely interrupted overnight in both directions.
These major works, managed by the Interdepartmental Roads Directorate (DIR), primarily aim to replace traffic lights, reinforce ventilation systems for smoke management, and upgrade fire detection systems. To minimize disruption to the thousands of motorists and truckers who use this strategic route daily, the work will be carried out exclusively at night, from 10 p.m. to 5 a.m.
The closure schedule is divided into three distinct phases during which the tunnel will remain inaccessible. The first phase of work will take place from Monday, September 21st to Friday, September 25th. After a break of a few weeks to allow traffic to ease, the teams will return to the site from Monday, October 19th to Wednesday, October 21st, followed by a final phase from Monday, October 26th to Friday, October 30th. However, the DIR (Regional Roads Directorate) has warned that last-minute schedule adjustments or extensions remain possible if technical constraints or weather conditions require it.
On the ground, these closures will impose strict controls on road users. Aware of the risk of congestion on secondary roads, the authorities have developed clearly differentiated diversion routes. Private cars and light vehicles will be redirected onto winding departmental roads, suitable for their size. However, for obvious reasons of safety and road load-bearing capacity, heavy goods vehicles will have to follow a specific, significantly longer diversion route, often signposted from interchanges located well upstream to avoid any blockages approaching the tunnel.
Planning ahead is therefore essential for anyone intending to travel through the area during these peak hours. Drivers are strongly advised to check real-time traffic conditions on specialized apps before setting off and to monitor the variable message signs deployed along the A75. For road hauliers, allowing extra travel time or adjusting their departure time will help avoid congested alternative routes during peak hours.