Overview
- The Conseil d'État issued its final ruling on June 29, 2026, validating the environmental authorizations first granted in March 2023 and closing the multi‑year domestic legal fight over the 53 km A69.
- The court found the project meets four public‑interest objectives—shorter travel time, better living conditions for residents, improved road safety and development of the Castres area—and rejected upgrades to the RN126 and rail as adequate alternatives.
- Opponents called the judgement a 'denial of the climate' and said they will pursue further remedies, including possible complaints to the European Commission, after years of tree occupations, ZAD attempts and mass demonstrations.
- The concessionaire Atosca and Transport Minister Philippe Tabarot said the decision allows work to finish and the autoroute could open around October 2026, with construction having resumed in mid‑2025 and toll gantries already installed on the route.
- Legal experts and environmental groups warn the ruling narrows the practical threshold for a 'raison impérative d'intérêt public majeur' by accepting a bundle of policy goals rather than evidence of acute emergency, a shift that could ease approvals for future projects.