Reconfiguration of the Bonaventure Expressway

The Bonaventure Expressway is being reconfigured for the benefit of the community. While the expressway is being turned into a boulevard, work will also be done in three adjacent sectors to preserve and uphold the safety of infrastructure in this area.

Sector of the Île des Sœurs Bypass Bridge

Opened to traffic in 2014, the Île des Sœurs Bypass Bridge was a temporary structure used as a bypass route while the new Île des Sœurs Bridge was being built for the construction of the Samuel De Champlain Bridge.

The work involves deconstructing this temporary structure. A material reuse program has also been included in the project. Some structural components, such as 24 steel girders, will be kept and reused for other infrastructure projects.

Deconstruction work completed. Some landscaping work will be held in 2025.

As the bypass bridge was disconnected from the road network in 2018, no major impacts on traffic are expected.

Elevated lanes

The federal section of the Bonaventure Expressway’s elevated lanes extends from the Victoria Bridge to the Peel Basin. The section from the Peel Basin to Wellington Street is managed by the City of Montréal.

The work consists of repairing the concrete slab on a portion of the deck and adding a higher-performance waterproofing membrane.

To improve the structure’s service life, the mini-pier caps will also be removed and replaced with systems that are more effective and easier to maintain.

May 2024 to December 2025

Two traffic lanes will be available at all times in both directions.

Clément Bridge sector 

The Samuel De Champlain Bridge (Hwy. 15 South) and the northern point of Île des Sœurs are linked to the Bonaventure Expressway through road structures that include the Clément Bridge. This bridge spans a branch of the St. Lawrence River at the northern point of Île des Sœurs to then meet up with the Bonaventure Expressway. Built in 1966, this aging infrastructure requires work to remain functional.

The girders of the Clément Bridge will be repaired, and the bridge’s drainage system will be cleaned.

The road surface will also be levelled and paved.

Work will be done on the approach lanes to repair the concrete surfaces, replace bearings, touch up paint, and improve the drainage system.

The overhead signage and streetlights in this sector will also be replaced.

June 2024 to December 2025

One lane in each direction will be open on the Clément Bridge for the duration of the work.

Exit 5 of the Bonaventure Expressway will be closed as of March 27, until the end of May. The detour will be via boulevard Gaétan-Laberge (Exit 4).