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Repair work on lock No. 5 of the Lachine Canal

The PCA wishes to proceed with major repairs on lock No. 5 of the Lachine Canal. The project will involve work primarily on the mechanical, electrical and automated systems. The plan is to change several mechanical parts on the doors and guillotine valves, replace the electrical systems of the doors and valves, and  make a few adjustments to the electrical panels and control boxes that open the doors and valves.

It is also expected that some work will be done on the structure, such as the repointing the mortar on certain sections of the wall, replacing parts on the doors and stabilizing scoured areas at the base of the walls.

Finally, strengthening the doors of the lock is recommended, as well as well as installing aerators on the upstream doors and on the mechanical protection systems in the gutters.

The work is planned for the fall, after the boating season. The water level in the lock needs to be lowered and the survival of the fish must be ensured.


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Latest update

16 march 2020 – The public comment period on the project is closed. Parks Canada is considering comments received to help inform its determination on whether the carrying out of the project is likely to cause significant adverse environmental effects.

Key documents

Key documents
Document Number Document Title File Date
1 New project being assessed by Parks Canada - Public comments invited from 14 february to 15 march 2020 - February 14, 2020

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Lachine Canal National Historic Site
105, McGill Street, 6th Floor
Montréal, QC H2Y 2E7
Telephone: 514-283-6054 or 1-888-773-8888
Fax: 514-496-1263

  • Location

    • Lachine Canal National Historic Site (Quebec)
  • Project Type

    • Other, not otherwise specified
  • Status

    In progress
  • Start Date

  • Proponent

    Parks Canada
  • Authorities

    • Parks Canada Agency
  • Assessment Type

    Project on federal lands
  • Reference Number


Nearby projects

..within 200 kilometres
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