Macdonald-Cartier Bridge Repair

The Macdonald-Cartier Bridge (MCB) works will consist  in a construction phase that will facilitate strengthening the MCB structure to address existing demands as well as ESAP-ESM Pipe demands.


The Macdonald-Cartier Bridge spans between Ottawa, Ontario and Gatineau, Quebec over the Ottawa River and is one of five interprovincial crossings and one of two truck crossings between the two cities. The crossing links King Edward Avenue in Ottawa, Ontario with Autoroute 5 in Gatineau, Quebec. The Macdonald-Cartier Bridge (MCB) is to undergo structural strengthening and modification.


During girder strengthening work, crews will be working on the box girders' interior installing new reinforcement. Additional crews will be working on the box girders' exterior, installing bolts to facilitate interior reinforcement, reinforcing and replacing bolts on the bridge floor beams. During this phase of work, barge placement under the bridge to facilitate access will influence the navigable waterway.


Latest update

March 4, 2022 – The authorities issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination - March 4, 2022
1 The Macdonald-Cartier Bridge Repair DOCX (15 KB) October 4, 2021


Environment, Health and Safety
Public Services and Procurement Canada
11 Laurier Street
Portage III, Place du Portage
Gatineau, Quebec K1A 0S5

  • Location

    • Macdonald-Cartier Bridge (Ontario)
    • Macdonald-Cartier Bridge (Quebec)
  • Nature of Activity

    • Other, not otherwise specified
    • Bridges
  • Assessment Status

  • Start Date

  • Proponent

  • Authorities

    • National Capital Commission
    • Public Services and Procurement Canada
    • Transport Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


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.


Nearby assessments

...within 200 kilometres
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