Mackenzie Avenue Rehabilitation

Confederation Boulevard is the Capital's ceremonial and discovery route. It encircles the downtown areas of Ottawa and Gatineau, and has been the National Capital Commission's (NCC) flagship urban development project over the past several decades. It is also the route that foreign dignitaries and the royal family take for processions and during state visits.

The NCC is proposing the rehabilitation of a section of Confederation Boulevard on Mackenzie Avenue, between Saint Patrick Street and the Fairmont Château Laurier. As this was one of the first sections of the boulevard to be developed, much of the original material, such as the granite pavers, has reached the end of its life cycle. Other sections of Confederation Boulevard have undergone rehabilitation in past years.

The goal of the project is to create a welcoming pedestrian-scale promenade, and improve the tree well design. This will create a healthier environment for the trees planted along the sidewalk, and help extend their life.

The project scope includes the following:

  • Replacement of the sidewalk surface
  • Upgrades to the tree well design to ensure an adequate volume of growing medium, and minimize damage to urban trees resulting from winter operations

Approximately 20 trees, which are either dead or in poor health, will be removed from the existing tree wells. Construction is anticipated to begin in spring 2022 and continue until early 2023.


Latest update

August 15, 2022] – The National Capital Commission issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects

The public comment period on the project is closed. The National Capital Commission is considering comments received to help inform its determination on whether the proposed project is likely to cause significant adverse environmental effects..


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination PDF (93 KB) August 15, 2022
1 Notice of Intent to Make a Determination - Start of Public Comment Period - February 18, 2022


National Capital Commission
Environmental Assessment
40 Elgin Street
Ottawa, Ontario K1P 5A8

  • Location

    • Mackenzie Avenue Rehabilitation (Ontario)
  • Nature of Activity

    • Other, not otherwise specified
  • Assessment Status

  • Start Date

  • Proponent

    The National Capital Commission
  • Authorities

    • National Capital Commission
  • 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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