A13 Closed for Nine Months to Reinforce Saint‑Cloud Tunnel

Overview

• The A13 will be closed in the Paris→Province direction between the boulevard périphérique and Vaucresson starting Monday, 16 November 2026 for reinforcement work scheduled to run until the end of August 2027.
• The Ministry of Transport says crews will build a new reinforced‑concrete inner shell inside the north tube to repair detected fissures and strengthen the nearly century‑old structure.
• The closed section carries about 80,000 vehicles per day, so officials expect large traffic shifts onto the A14, the N118 and local roads that could cause major slowdowns.
• To ease disruption the government will make the A14 toll‑free for Paris→Province weekday travel until June 2027, add express bus runs at peak times and relax parking rules at stations to encourage public transport use.
• Motorist groups warn the first one to two months will be the toughest as drivers find new routes, and nearby communes may see spillover congestion that routing tools could underestimate.