Overview
- The Conseil d'État heard priority appeals on Monday, June 15, and the rapporteur public told judges to reject environmental groups' cassation requests by upholding the legal test called the 'raison impérative d'intérêt public majeur' or RIIPM.
- The court has taken the case into deliberation and said its ruling will come in the coming weeks, a decision that will determine whether legal challenges can still halt work.
- A lower court suspended the project in February 2025 for lack of RIIPM but the administrative appeal court in Toulouse reversed that on December 30, and construction resumed in mid‑2025 under a concession plan by Atosca aiming for an October opening.
- Opponents say the roughly 50‑kilometre Castres–Toulouse motorway will consume farmland and harm biodiversity, claiming impacts on 157 protected animal species, and they have used demonstrations, hunger strikes and tree occupations to press their case.
- Beyond the A69, the hearing highlights a wider clash over whether judges should weigh public policy goals like local mobility against conservation rules and how that balance will shape future infrastructure and land‑use decisions.