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Information bulletin
Repair works on the avalanche shield tunnel H2 and structure OA2
Automatically translated from French ·
Published on Saturday, September 12, 2026 at 3:42 PM
Repair works on the H2 avalanche tunnel and structure OA2 are causing road closures and diversions on several routes, including RN320, RN22, and RN20. Restrictions are in effect from 1 June to 29 October 2026.
Repair works on the avalanche protection tunnel H2 and structure OA2 are causing traffic restrictions on several roads in southern France.
Closure of RN320 (09):
- From Monday, 01/06/26 at 20:30 to Thursday, 29/10/26 at 06:00,
- Along the route from PR 00+000 to PR 01+860,
- Closed to all vehicles and pedestrians in both directions.
Implementation of detour:
- During the night from Monday, 01/06/26 to Tuesday, 02/06/26 (from 20:30 to 06:00):
- RN320 (09 and 66), from PR 00+000 to PR 03+135, closed to all vehicles in both directions.
- RN20, from PR 97+500 to PR 98+700, with manual alternating traffic.
- A detour is in place to access Pas de la Case and the municipalities of Pyrénées-Orientales via RN20 (Puymorens tunnel), RN320 (66), and RN22 (66).
Reopening of RN22 (09):
- From Tuesday, 02/06/26 at 06:00 to Thursday, 29/10/26 at 06:00,
- Open to all vehicles in both directions,
- Along the route from PR 00+000 to PR 04+095.
These measures affect the following territories: Alpes-Maritimes (06), Bouches-du-Rhône (13), Var (83), Tarn (81), Hautes-Alpes (05), Alpes-de-Haute-Provence (04), Gard (30), Vaucluse (84), Hautes-Pyrénées (65), Gers (32), Corse-du-Sud (2A), and Tarn-et-Garonne (82).
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