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Works info

Cornwall bridge reconstruction and dalle park construction

Road  | Major
From May 2020 Mainly during the day between 7 a.m. and 7 p.m.
Centre and Airport

Nature of the work:

The closure of the Deux-Montagnes line as of May 11th, 2020 presents a unique opportunity to access the rail line in order to demolish and rebuild the Cornwall bridge to current standards. NouvLR will also proceed with the construction of a dalle park, an infrastructure that will link the Graham/Laird and Cornwall road bridges and on which the Town of Mount Royal will then build a public square to facilitate access on both sides of the railway line.

The complete closure of the Cornwall bridge will take place in the night on May 19 to 20.


2020 schedule

 Sequence of work and obstructions

From May 4th

Preparatory work 

  • Demolition of the median in front of 1445 Graham Boulevard and relocation of the traffic light
  • Demolition of the median and reconfiguration of on-street parking lots on Laird Boulevard and Regent Road (ground markings)
  • Demolition and reconstruction of sidewalks at the intersection of Cornwall avenue and Croissant Lombard

In the night of May 19 to 20

Cornwall bridge completely closed to traffic

  •  Traffic in both directions on Graham/Laird bridge

 (2 lanes of traffic maintained eastbound and one lane westbound)

May 2020 – May 2021

Cornwall bridge demolition and reconstruction

  • Installation of parking and sidewalk barriers between Cornwall bridge and Graham/Laird bridge
  • Bridge demolition
  • Installation of temporary Lazard-Jasper footbridge (dates to be confirmed)
  • Drilling of the foundations of the new bridge and construction of the pierheads
  • Excavation, then backfilling of the bridge approaches
  • Bridge deck construction
  • Civil works (asphalt, sidewalks, railings, fences, markings, street lamps)

June 2021

Cornwall bridge reopens to traffic

From August 2020

Construction of the dalle park connecting Cornwall and Graham/Laird bridges

  • Relocation of public utilities
  • Dalle-park foundations drilling, excavation and backfilling work
  • Steel and deck installation and deck construction
  • Civil engineering work


Completion of construction work on the dalle park

*The work will take place between 7 a.m. and 7 p.m. Work before and after this period may be necessary to mobilize and demobilize equipment required for the work, for deliveries and for site clean-up.

The following map shows the work location and traffic obstructions:


The goal of the REM project office and the NouvLR consortium is to mitigate the impact on surrounding residents and ensure everyone’s safety by taking all appropriate measures.

  • This work will generate noise, vibrations, dust and truck traffic. Long-term traffic barriers will be put in place to minimize construction traffic and secure the construction zones.
  • A police presence is planned during the first week of the obstruction to ensure traffic safety. Close monitoring will be carried out on the train to make the necessary adjustments.
  • The traffic situation is likely to be challenging due to increased construction work in the area. Commuters are invited to avoid the area when possible.

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For all questions | 1 833 REM-INFO

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