What impact will the construction of the REM have on current commuter train service? (Deux-Montagnes and Mascouche lines)

What impact will the construction of the REM have on current commuter train service? (Deux-Montagnes and Mascouche lines)

The work involves replacing the train with an automated light rail transit system. The tracks and power supply will be changed over 30 km, 12 enclosed stations will be built and 3 connections will be added to the McGill and Édouard-Montpetit stations and the Mascouche line. Existing infrastructure such as the tunnel under Mount Royal and the railway bridges will also be renovated and modernized.

Service interruption sequence on the Deux-Montagnes and Mascouche lines: 

  • From March 30, 2020: Closure of the Central station-Du Ruisseau segment (the Deux-Montagnes line stops at Bois-Franc, the Mascouche line stops at Ahuntsic) 
  • From December 31, 2020: Complete closure of the Du Ruisseau segment in Deux-Montagnes 

To learn more about the work and alternate transportation options, consult our specific page: Deux-Montagnes and Mascouche lines