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Project of the Year incl. Renovation (up to €50M)

Mount Royal Tunnel – Double Arch Replacement & Rehabilitation for the REM Project

A section of the REM goes through the 5 km long existing Mount Royal Tunnel which was completed in 1917 and connects the downtown area with the north side of Montreal.
After 100 years of continuous operation since construction, the condition of the TMR was expected to require repair and upgrade for conversion to an LRT facility.
The project addresses the concerns from detailed inspections and strength assessments concluding that the South Section (92 m) was not in an acceptable condition after 100 years of deterioration caused by infiltration of chloride laden groundwater. Another 290 m length of the tunnel, named North Section, felt to be in an adequate condition to be remedied using observational rehabilitation methods.