The STM announced via the ligne orange Twitter account that the entire line has been shut down due to the presence of smoke. The affected stations were initially between Beaubien and the Laval terminus of Montmorency, but the STM has since extended the shutdown to the other terminus at Côte-Vertu. There are no other details. It is unclear where the smoke was first detected. This is the second major metro service interruption in one day and comes after a difficult week for the STM.
UPDATE: Service is resuming on the orange line.
Last week, a water main break resulted in flooding at Square Victoria-OACI station and the complete shutdown of the downtown portion of the orange line between the busy Lionel-Groulx and Berri-UQAM stations.
Shutdown ORANGE line between Côte-Vertu and Montmorency. Presence of smoke. Service expected to resume at 18:15. #stminfo Z— Ligne Orange (@Ligne Orange) 1574117659.0
The STM shrunk the extent of the shutdown twice before finally resuming service.
Shutdown ORANGE line between Sherbrooke and Montmorency. Presence of smoke. Service expected to resume at 18:45. #stminfo G— Ligne Orange (@Ligne Orange) 1574118222.0
Shutdown ORANGE line between Beaubien and Montmorency. Presence of smoke. Service expected to resume at 18:45. #stminfo P— Ligne Orange (@Ligne Orange) 1574119037.0
[Métro service status] 🚇✅ Service is gradually resuming. Delays and increased ridership are expected in both direct… https://t.co/nEQIhTHitY— Ligne Orange (@Ligne Orange) 1574120016.0
Service is now resuming on the orange line.
We will update this article with more information as it becomes available.