Work on Du Poitou, D’Alsace, and Simard

In the summer of 2024, the Ville de Saint-Lambert will rebuild Du Poitou Street and a part of D'Alsace Avenue (between De Gascogne and Du Poitou streets). The work will consist of replacing the sewers and water mains, repaving, and rebuilding the sidewalks.

The city will take advantage of this opportunity to repair certain infrastructures, such as sidewalks and roadways, on Simard Boulevard.

We are conscious of the inconveniences caused by such a major project and how they will disrupt your daily life. We would therefore like to help you prepare for the work.


Alsace and Poitou

  • Late May: Preliminary work
  • Early June: Demolition work and installation of temporary aqueduct
  • Late June/early July: Replacement of sewer and water mains
  • September: Reconstruction of sidewalks, surface improvements and first layer of paving
  • Fall 2024: End of work
  • Summer 2025: Second layer of paving


  • June: Demolition and replacement of sewer and water mains between De Gascogne and Du Poitou streets
  • Mid-June: Start of pavement and sidewalk repairs between Du Poitou Street and Victoria Avenue
  • August: Paving and striping work and opening of Simard Boulevard to traffic
  • September: Landscaping work with traffic in operation


Closure of Simard Boulevard

From June 3, Simard Boulevard will be closed to traffic between Victoria Avenue and Riverside Street. The rondabout will remain open, except for the exit onto Simard Boulevard.

The detour will be via Victoria Avenue, Sir-Wilfrid-Laurier Boulevard (Route 112) and Riverside Street. Local traffic will be allowed throughout the work, with access points and routes varying as work progresses.

Détour fermeture Simard

Closure of Du Poitou and D'Alsace

From mid-June, Du Poitou Street and D'Alsace Avenue, between Gascogne Street and Préville school, will be closed to traffic. With a few exceptions, local traffic will be possible for residents in the work zone. As Simard Boulevard will also be closed, local residents will be asked to use De Normandie Avenue to access or exit the neighborhood.

Detour rout

RTL buses

As of June 3, the closure of Simard boulevard due to repair work is forcing the Réseau de Transport de Longueuil (RTL) to modify the route of its line 13. To minimize inconvenience to local residents, RTL has chosen to redirect the route relatively close to its regular route. The new line will take the following streets:

  • Du Dauphiné Street (opposite Plamondon) between Simard Boulevard and du Béarn Avenue;
  • Du Béarn Avenue;
  • Du Languedoc Street between avenues du Béarn and de Normandie;
  • De Normandie Avenue between du Languedoc Street and Riverside.

Both directions of this route will intersect on this new route. In order to ensure safe bus traffic, the following measures will be implemented:

  • Removal of center-of-street beacons on the affected sections;
  • Implementation of parking bans on the even-numbered sides of Dauphiné Street (affected section only) and Béarn Avenue.

More information

You can contact RTL Customer Service at 450 463-0131 or by using the online form, or visit RTL's website..

Neighbourhood residents

The reconstruction of a street is a complex operation involving several companies, and it disrupts people’s lives. We invite you to consult the Practical information during roadwork page, which will offer practical tips to ensure your daily routine remains as unaffected as possible.

If you wish to carry out renovation work on your home this summer, we invite you to consider the inconveniences caused by this major roadwork when planning your project. Remember that, among other things, when excavation work is underway to replace the pipes and rebuild the sidewalks in front of your home, it will be temporarily impossible to access your home with a vehicle. This type of work usually takes 10 working days.

During this roadwork, the entire street will be rebuilt, including replacing the water supply mains, sewer pipes, roadway, and sidewalks. You might want to undertake certain projects, which will be easier to do at this time, such as:

Sewer pipes and water supply mains

The Ville de Saint-Lambert will replace the water supply mains and sewer pipes up to the right-of-way of your property.

If you think there is a problem with your private water supply mains or the sewer pipes that run between your home and the property line, or that they might be obsolete, this would be a good time to replace them.


If you would like to change the configuration of your curb and driveway entrance, this would also be a good time to schedule such work.

For more information or to plan one or more of these projects, please contact Madorelle Hounkanrin at the Urban Planning, Permits and Inspection Department at 450-672-4444 or at


We invite you to contact the Engineering Management division at 450 672-4444 or at You can also speak with municipal engineering technician Christian Chan Ying, who will be your primary contact throughout the project. He can be reached at 514-261-3919.


The information on this page will be continually updated. We invite you to check it regularly for progress reports on the work.

Work will begin shortly in the area. So, starting June 3, Simard Boulevard will be completely closed to traffic between Riverside Street and Victoria Avenue, until the end of the summer.

The detour route will take Victoria Avenue, Sir-Wilfrid-Laurier Boulevard and Riverside Street.

We invite you to be careful when circulating in the area around the worksite and to respect the signs in place.

You can consult the presentation made to the citizens during the meeting of December 7.

We will be holding an information session on Thursday, December 7, at 8 p.m., at the multi-purpose centre (81, Hooper Street) to present this project to the public. You can also watch the meeting live on our YouTube page.

During this information session, we will explain the key aspects of the project and present the projected plans and timeline. We will also give you some practical tips to ensure that your daily routine remains manageable and endeavour to answer any questions you may have.

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