Metro 4 works: dates, times and alternatives from September to December 2026 Last updated: August 31, 2026
From September to December 2026, interruptions are planned on Metro Line 4. These closures have a direct impact on your journeys: find the schedule and our advice in this article.
Key dates
Disruptions are scheduled on the metro line 
due to renovation works :
🚫 **Saint-Michel station closed from September 14 to December 19 inclusive, all day long**
Adjust your journeys with the Bonjour RATP app
🔎 Search for the best route
Start a route search: the results anticipate disruptions to help you avoid work zones. Then customize according to your needs: schedules, transport modes, lines or stations to avoid…
🚦 Check live traffic information
Access real-time traffic status via the app's Traffic tab. You can enable personalized alerts to be notified when your lines are affected.
📹 Demo: follow traffic updates with the app
The Bonjour RATP app, your ally for anticipating disruptions and
finding the best routes during works
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