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Rivière des Prairies Tunnel

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  • Présoutènement du métro - tunnel Rivière des Prairies_1g.jpg

This contract was part of a work package to extend the subway from the Henri-Bourassa terminus in Montreal to the future Cartier station in Laval, by means of a tunnel underneath the Rivière-des-Prairies near the Viau Bridge.

Even though the layer of rock between the river bottom and the vault of the tunnel is of good quality, it was not considered thick enough to ensure a totally safe structure and had to be reinforced by an anchorage system.

Approximately 457 anchorages, 9 metre long steel bars placed with extreme precision into bored holes and injected with cement grout, were grouped into two sections near the riverbanks. All the work was performed from the river surface using barges, tugs, cranes and drills and was completed in under four months.

Type of project :
Maritime, Transportation
Type of contract mode :
Stipulated price
public transit, subway
Montreal-Laval View map
Type of service :
Self-performed work, Health and safety, Insurance
Year of construction :
Similar projects :
  • Port of Montreal - Deepening of Berths 58 to 61
  • Cartier and Montmorency Subway Stations
  • Queen's Quay (reconstruction)
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521, 6th Avenue
Saint-Georges, QC
Canada G5Y 0H1

Phone: (418) 228-6688
Fax: (418) 228-3524
E-mail: eric.lessard @ pomerleau.ca

Website: www.pomerleau.ca
Printed on: August 26, 2016