égouts Frontenac


Sanitary sewer project in the Frontenac sector, the project des Pins and the extension of the drinking water network on Route de la Cité-des-Jeunes.

*Please keep in mind that I am not an engineer or road safety expert, so I am simply providing as much information as possible to explain the project and the challenges. We understand that this project is causing a lot of disruption and that it is extremely difficult for those living in the construction zone, we are sensitive to your concerns.

I try to go check out the work site once in a while to get a real sense of the situation, but things can change daily so the information here might get outdated quickly. 

If you have any technical questions or concerns about the project, I encourage you to contact the Infrastructure Department.


The construction work, which will take place in phases until December 2023, will provide nearly 360 homeowners with a lasting sanitary sewer infrastructure. This work will solve the problems posed by septic systems in the area, where 95% of the installations directly or indirectly pollute the soil.

The extension of the water network will make it possible to connect the network, increase fire protection, and provide drinking water to approximately 30 existing properties. Some of these citizens are currently served by Vaudreuil-Dorion and often have problems with low water pressure. Therefore, we are correcting this problem to a large extent as well.

The project is done in 3 phases

Although phase 1 in total is longer, the duration of the detour on Brunet Street should be two and a half months.

Phase 1
August 2022 to December 2022: Sainte-Angélique and Saint-Louis roads
April 2023 to November 2023: Cité-des-Jeunes road

Phase 2
April 2023 to November 2023

Phase 3
April 2023 to November 2023

You can view the presentation from the information meeting held on Thursday, May 12, 2022 here: 


We have been working since 2015 to implement this project, but the subsidies were only officially awarded in June 2022 (PRIMEAU). With an investment of nearly $32 million (25% of the costs are covered by subsidies), this is one of the largest infrastructure projects in the history of the Town of Saint-Lazare. 

The citizens who will benefit from the infrastructures are responsible for the cost of the project. The project is financed in part by subsidies and sector taxes and not charged to all Saint-Lazare residents.

Developer-owned land (such as the golf course land) is also taxed proportionately (number of developable lots according to the CMM’s densification figures) to help cover costs and does not benefit from any subsidies. Without the help of financing from these properties, the project would have been virtually impossible, as they allow the contribution to the extension of the network to existing residents. Given that this will allow the infrastructure to move forward, it will also facilitate the extension of the network into other neighborhoods in the future, such as Vallée Chaline for example.

Communication with residents

A special e-newsletter was created to keep citizens informed and several updates have been sent out over the years. The presentation of the project was made in person on May 12, 2022. The public consultation was streamed live on Youtube (https://youtu.be/fiFWtgxpJKs). A letter dated August 22 was also distributed to residents of the Frontenac and Project des Pins area to inform them of the upcoming detours in the Brunet and Duhamel area.

Security measures

The City, the Infrastructure Department and the contractor have been working together for several months. On an ongoing basis, the relevant authorities (Infrastructure, Contractor, Sûreté du Québec, SAAQ and MTQ, etc.) are working to put forward the necessary safety and mitigation measures to ensure public safety. 

Impossible to close the traffic for residents only, as this would be very detrimental to businesses, daycare, etc. and would considerably hinder the movement of residents in the area. 

Impossible to allow only one lane of traffic on the Cité des jeunes for safety reasons, as the roads will be opened to install the pipes. Vibrations from truck and car traffic would also be a concern during the infrastructure work. As well, Cité des Jeunes is not a municipal road, it’s a provincial road so we don’t have the authority to build on it or next to it a new road.


Although we have seen some signs ignored by heavy truck drivers, the signs indicating that trucks are not authorized had already been installed at all accesses to the detour. It would be impossible to ban all trucks, as this would cause problems for residents and merchants in the area for delivery and various services. Other signs indicating that trucks of 5 axles or more are prohibited (except for local delivery/pick-up, garbage, furniture, towing, septic tank emptying, etc.) will be added shortly. We hope that the signs will be more explicit and visible for the large trucks that have ventured onto the smaller streets.

Small trucks are permitted. For example, this includes pickup trucks, vans, trailers, small cube trucks, etc.

There has been a request for additional resources to allow for enforcement by SAAQ ” Controllers ” in the work zone. The SAAQ road controllers have the authority to issue tickets to non-compliant truckers.

Note: It should be noted that the Cité des Jeunes road (340) belongs to the MTQ and even if we have requested other signs or other measures, they have the final say. 

All measures taken

  1. Signallers should be on site during work periods (Monday to Friday 6:30 am to 6:30 pm) to control access and direct traffic
  2. The sûreté du Québec has been contacted by our public security department to bring increased surveillance to the area
  3. Request for SAAQ roadside controllers to monitor trucks
  4. The request was made to add the construction work to 511 (you can see here : https://www.quebec511.info/fr/Diffusion/EtatReseau/DetailsChantier.aspx?idChantier=243474 )
  5. Centre lines will be painted on the asphalt on the five curves of Brunet Street to help motorists navigate the road
  6. A daily vigil is carried out by the teams in order to identify damaged or displaced signs and to replace or solidify them if necessary
  7. On Brunet, a (temporary) speed change from 40km/h to 30km/h will take place by the beginning of the week of September 5th and two speed indicators will be installed to make users aware of the new speed limit
  8. Signs (arrows and signs) will be added to help road users find their way around
  9. There will also be the addition of new signs (4 x 8) prohibiting vehicles of 5 axles or more
  10. The MTQ plans to add signs indicating the doubling of fines – construction zone
  11. The MTQ added additional no truck signs ahead of the work site on Cité des Jeunes
  12. Other measures are currently being analyzed


Businesses are open (daycare, restaurants, hairdresser, garage, gas station, etc.). Drivers are invited to follow the signs around the construction site and to plan their travel time.

Other detours

  • By highway 40: the detour is via the 201, the A-40 and the A-30 (and vice versa)
  • By Highway 20: the detour is via Chemin Saint-Emmanuel, A20 and A-30 (and vice versa)

After the work is completed

  • The project includes the repaving of all the streets affected at the end of the work
  • All damaged lawns will be repaired
  • Land damaged by the widening of the shoulder on 90 degree curves will be repaired

We remind you of the following

In order to maximize public safety on the construction site, the public authorities need everyone’s cooperation.

  1. All must respect the safety rules and signs.
  2. If a person witnesses a violation or a problem, they are encouraged to contact the following authorities:
  • Ville de Saint-Lazare : 450 424-8000 ext 299 (leave a message) or by email egoutfrontenac@ville.saint-lazare.qc.ca (the return of phone calls and emails is done within reasonable delays) ;
  • Sûreté du Québec : (450) 456-3883 (poste aux Cèdres : de 08h00 à 16h30) 514-310-4141 (après les heures de bureau) ;
  • 911 (emergency at all times).

The more calls received by citizens, the more likely the SQ is to act! The City alone does not have as much influence as a group of citizens together.

Last words

Motorists and residents are encouraged to be patient when driving through the detours and to respect private property. Using the cell phone application WAZE is a good way to see detours, traffic congestion and the best routes to take to get to your destination faster. I highly recommend its use. 

Also, it is important to know that the city is always in adaptation and improvement mode. If adjustments can be made, they will be implemented if necessary.