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2021 Calendar

The schedule is provided for information purposes only and is subject to change based on discussions with our partners.

Intensification of work and continuation of operational tests in 2021

Some 20 construction sites are underway across the metropolitan area. Some of the key milestones to watch out for this year: Operational tests are ongoing on the South Shore, modernization work is continuing in the Mont-Royal Tunnel, construction is picking up on the North Shore and in Pierrefonds-Roxboro, and work is progressing on the centre span of the Samuel-De Champlain Bridge.

Station Du Quartier

Commissioning schedule

The work schedule has been updated:  

  • South Shore to Central Station: spring/summer 2022
  • Central Station to Du Ruisseau: fall 2023
  • Du Ruisseau to Sunnybrooke: spring 2024 
  • Sunnybrooke to Deux-Montagnes: fall 2024 
  • West Island segment: spring 2024 
  • Airport segment: end of 2024

For more information on the updated schedule, see our news: 

More information

South Shore

  • Finalization of the outer envelope of the Panama station and continuation of the interior design of the Brossard, Du Quartier and Panama stations
  • Continued construction of bus terminals at Brossard and Panama stations
  • Installation of the beams and deck of the future overpass between Highway 10 West and Brossard station 
  • Continued installation of the track and electrical system in the centre of Highway 10
  • Continuation of work on the centre span of the Samuel-De Champlain Bridge 
  • Continuation of the tests begun in December 2020 on the representative segment between Brossard station and Milan Boulevard (3.5 km) throughout the year


  • Continued construction of the Île-des-Sœurs station and its accesses, and the channel bridge
  • Continued construction of the elevated structure and installation of the rails and electrical system Continued widening of De la Commune bridge and of embankment work along Smith Street 
  • Continuation of the rehabilitation and replacement of railway infrastructure on the southern railway overpass
  • Central Station: Installation of electromechanical equipment, construction of the central platform and mechanical rooms, and installation of the new railway infrastructure 
  • McGill: Excavation of the station platforms in the Mont-Royal Tunnel, and construction of the station’s mechanical rooms and foundations
  • Édouard-Montpetit: Finalization of the excavation of the station and platforms and installation of the steel structure

Center of the Island of Montréal

  • Since December 31, 2020: Complete closure of the Du Ruisseau to Deux-Montagnes segment
  • Excavation work and replacement of existing railway tracks in the Mont-Royal Tunnel
  • Work in the railway right-of-way between Canora and Du Ruisseau stations
  • Start of work in the railway right-of-way at the exit of Du Ruisseau station going west
  • Continued construction of the Canora, Ville-de-Mont-Royal, Côte-de-Liesse, Montpellier, Du Ruisseau and Bois-Franc stations: All stations will be built and enclosed in 2021
  • Demolition and reconstruction of the Jean Talon and Cornwall bridges and conversion of the level crossings to railway overpasses at O’Brien and Toupin

For more information on the work sequence, visit the citizens space: 

More info

North Shore

  • On December 31, 2020, commuter train service on the Deux-Montagnes line ceased for good. In 2021, major construction work will accordingly be launched in Laval and Deux-Montagnes.
  • Along the right-of-way: Preparatory work (cutting down trees and shrubs, removing existing railway facilities), then rebuilding and doubling of the track
  • Railway bridges: Work is continuing on the Rivière-des-Prairies 1, Rivière-des-Prairies 2 and Rivière-des-Mille-Îles bridges
  • Îles Laval: Construction of retaining walls along the right-of-way and start of construction of Île-Bigras station (excavation work, installation of the structure)
  • Sainte-Dorothée: Road reconfigurations around Sainte-Dorothée station (Des Bois Avenue, Chemin-de-Fer Street, Terrasse de Fontenelle, Chemin du Bord-de-l’Eau) and start of construction of the station (excavation work and installation of the structure)
  • Laval-sur-le-Lac: Development of the gantry that will span Les Cèdres Street
  • Deux-Montagnes: Reconfiguration of railway crossings (Chemin d’Oka, Henri-Dunant Street, Deux-Montagnes Boulevard), continuation of work to convert Du Lac Boulevard into a road overpass and start of construction of Grand-Moulin and Deux-Montagnes stations

West Island and airport

  • Pierrefonds-Roxboro: In January 2021, work will begin in the borough to transform the railway right-of-way in preparation for the arrival of the REM and begin construction of the future Sunnybrooke and Pierrefonds-Roxboro stations. In 2021, the Alexander and Sunnybrooke level crossings will be converted into two new overpasses, while the 11th Avenue, Gouin West and Des Sources crossings will be eliminated with the construction of a 1.5-kilometre elevated structure.

  • Continuation of work on the elevated structure: Construction of piers, production of segments, installation of rails on the deck

  • Continuation of construction work on the Fairview-Pointe-Claire and Anse-à-l’Orme stations

  • Continuation of work by the Alice tunnel boring machine toward the airport 

  • Spring 2021: Resumption of activities of the two launching gantries, Anne and Marie (suspended all winter)

Media briefing

For more information, download the latest technical presentation to the media, held in October 2019.

Download (PDF)

Keep informed about the work

Works info

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