Repair and development of the Île Sainte-Hélène Pavilion

Built between 1927 and 1931, the Île Sainte-Hélène Pavilion is an Art-Deco-style building located on Île Sainte-Hélène. With a total floor area of 7,145 m2, the pavilion has two basements, a ground floor, an upper floor, and a mezzanine. Its foundations were built into the side of the bedrock. The building is made of concrete slabs and walls, and a system of steel beams and columns. The pavilion roof is part of the deck of Section 5 of the Jacques Cartier Bridge.

A number of repair projects have helped preserve this more than 90-year-old building over the years. Today, the pavilion is showing signs of damage that requires new work.

The aim of this project is to prolong the pavilion's service life by 75 years while retaining the building's main function as the deck of a section of the bridge. The project will also include operational, aesthetic, architectural, historical and ecosystem aspects.

For this project, JCCBI will install electromechanical systems, underground retention basins, and hydrodynamic separators that will be connected to a sewer network. Structural work is also planned and includes repairing interior walls, replacing or demolishing the mezzanine slab, upgrading staircases in the towers, performing concrete repairs, and reconstructing some mosaic tiling. The project will also include a landscaping component.

Short and long-term traffic hindrances will be required for this pavilion work to be carried out. These traffic hindrances are required to give contractors the necessary space to set up temporary installations and maintain safe distances between workers, equipment, and bridge users during the work.


Latest update

November 30, 2023 – The public comment period on the project is closed. The Jacques Cartier and Champlain Bridges Incorporated 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 Repair and development of the Île Sainte-Hélène Pavilion - December 19, 2023


The Jacques Cartier Champlain Bridges Incorporated
Tania Doucet, Environment Lead
1225, Saint-Charles W. Suite 500
Longueuil, Quebec J4K 0B9
Telephone: 450-651-8771

  • Location

    • Montreal (Quebec)
  • Nature of Activity

    • Highways and Roads
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    The Jacques Cartier Champlain Bridges Incorporated
  • Authorities

    • Jacques-Cartier Champlain Bridges
  • 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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