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Work progress by region


Video: Crossing the Rivière des Prairies in the Chamouchouane project

Welcome to the jobsite!

Kevin Tétreault invites us to the Rivière des Prairies crossing, where some impressive work is underway in fall 2017.

Félix Sauvé and Jean-Philippe Chouinard explain how construction began with cofferdams to allow towers to be erected in the river. The final step was unreeling the massive power lines.

Got your sea legs on?

Welcome to the jobsite!

Hydro-Québec continues construction of two new lines (735-kV and 315-kV) in Montréal’s Rivière-des-Prairies–Pointe-aux-Trembles borough.


To be built: 735-kV line (indicated in purple) and 315-kV line (in green)
Cofferdams at the planned location of future towers (red dots)
To be dismantled: 315-kV line above the river (in black)

Type of work and phases

June to December 2017

  • Construction of the towers within cofferdams in the Rivière des Prairies as shown below.

Fall 2017

  • Completion of the new 315-kV line
  • Dismantling of the old 315-kV line
  • Start of construction of the 735-kV line

Environmental follow-up

  • An environmental specialist will be on site during the work
  • Noise levels and suspended solids will be monitored

Expected inconveniences

  • Temporary increase in traffic
  • Use of heavy equipment for delivery of materials

Public safety

  • Presence of signalers on Boulevard Gouin during certain operations

For more information on the schedule, consult the Project News bulletin [PDF — 197 Kb] for the project (in French only).