Work Info

Rehabilitation work on Route 340 (boulevard de la Cité-des-Jeunes) by the Ministère des Transports et de la Mobilité durable resumed on April 15 and will continue until the end of November 2026. This project aims to improve access to the future Vaudreuil-Soulanges hospital.

The work, which will take place in Vaudreuil-Dorion, will involve a new phase of construction, including:

• the construction of two roundabouts east of Highway 30
• the redesign of two intersections near the new hospital
• the construction of a one-kilometer-long dedicated multi-use path that will extend the current multi-use path to the future hospital.

Work will then pause for the winter and resume in the spring of 2027. The entire project will be completed in 2028.

Virtual informational meeting on April 9, 2026, with business owners and property owners located near the construction site

See the presentation for more details.

Road closures and traffic management

From May 19 through December 

Repair and widening work on Boulevard de la Cité-des-Jeunes, between Henry-Ford Street and Des Floralies Street, will begin on May 19 and continue through December. The work will be carried out in two phases:

Phase 1 – North side (off the existing roadway)

• Work will be carried out off the current roadway.
• Traffic will be maintained with one lane in each direction on the existing pavement.

Phase 2 – South side (on the existing roadway)

• Work will be carried out on the current roadway.
• Traffic will be maintained with one lane in each direction on the new roadway.

This work will allow for the widening of the boulevard to improve traffic flow in the area.

April 20–May 19 (Area east of Highway 30)

Closure of Boulevard de la Gare (southbound) between Rue Maurice-Richard and Boulevard de la Cité-des-Jeunes

Closure of Boulevard de la Cité-des-Jeunes (Route 340) westbound between Boulevard de la Gare and Highway 30

• One lane in each direction on Boulevard de la Gare, northbound, between Maurice-Richard and R-340
• One lane in each direction on R-340 (Boulevard de la Cité-des-Jeunes), between A-30 and Boulevard de la Gare
• Bypass lane from R-340 East to Boulevard de la Gare North  

Spring/Summer 2026

• May 1 to July 13: Complete closure of Chemin de la Petite-Rivière (local traffic permitted).
• June 15 to August 27: Complete closure of Route 340 at the intersection with Boulevard de la Gare.
  - Access to Boulevard de la Gare heading north and to Route 340 heading west will be available via a detour route.

From early August to mid-October

• Route 340 is completely closed at the intersection with Henry-Ford Street.

From mid-October to mid-November

• Temporary closures on various sections of the area to complete the work.

Detour routes will be marked with signage.

Helping Emergency Vehicles Get Through During Roadwork

The Fire Department is informing the public that, due to major roadwork and increased traffic congestion during rush hour in Vaudreuil-Dorion, emergency vehicles may use less-traveled streets to ensure a quick and safe response.

Citizen cooperation is essential to facilitate their passage. It is recommended that you obey parking signs, leave sufficient clearance on the roadway, keep intersections clear, yield to emergency vehicles, and remain alert to your surroundings while driving.

Overview of the work

More details about the project

• Route 340 Improvement Project: ministère des Transports et de la Mobilité durable website
• Construction work related to the future Vaudreuil-Soulanges Hospital: CISSSMO website

Subscribe to the mailing list 

Information on the progress of the project will be sent by email to those subscribed to this mailing list: Route 340 – aménagements entre Vaudreuil-Dorion et Saint-Lazare

Are you a neighbor of the future hospital?

Contact the Centre intégré de santé et de services sociaux de la Montérégie-Ouest (CISSSMO) to receive information about the project (special newsletter, invitations to information sessions and discussions with local residents). Send them an email at projet.hvs.cisssmo16@ssss.gouv.qc.ca by writing Neighbor of the future hospital in the subject line of your email.

Bellemare Intersection Redevelopment
 

From Monday, May 11, at 10 p.m. to Tuesday at 5 a.m.

The ministère des Transports et de la Mobilité durable will completely close Harwood Boulevard between Ranger Street and Route 342 (Harwood) to allow for the installation of concrete barriers and signage.

From May 11 to July 31

The Ministère des Transports et de la Mobilité durable advises the public that redevelopment work at the Bellemare intersection will result in traffic disruptions between rue Raoul-Blais and rue Bellemare from May 11 to July 31.

Long-term traffic configuration

To maintain traffic flow during the work, traffic lanes will be shifted to the right on Autoroute 20, including the shoulder. Two 3.2-metre-wide lanes will remain open for approximately two months. The speed limit in the area will be reduced to 40 km/h. A signed detour route will be in place.

Additional restrictions

• On A-20 West at the Bellemare intersection, left turns will be prohibited, except for authorized vehicles;
• The Raoul-Blais intersection will be completely closed during the work.

The planned work includes:

• redevelopment of the boulevard Harwood (A-20) intersection;
• construction of the access to the Sûreté du Québec;
• installation of new traffic lights.

Overnight closures

Occasional complete overnight closures of A-20, in both eastbound and westbound directions, are also planned between route 342 and rue Ranger. Detour routes will be marked using temporary signage adapted to the closures.

Route Harwood

Canadian Pacific Kansas City (CPKC) will begin repair work on the railway bridge starting Tuesday, April 13, resulting in the complete closure of Harwood Road (Route 342) between Petite-Rivière Road and Henry-Ford Street for approximately 10 weeks.

Only local traffic will be allowed (residents and businesses).

Du vendredi 1er mai à 22 h au lundi 4 mai à 5 h  (en raison de la fermeture du chemin de la Petit-Rivière)

Route Harwood (342) – between montée Daoust and the viaduc de l’A-40

Underground electrical network extension work by Hydro‑Québec will be held until April 17. 

During this period, eastbound lanes will be closed to traffic and traffic will flow in one lane in each direction using the westbound lanes. Businesses will remain accessible at all times during the work.

** Work will resume on April 27, for an approximate duration of two months. Traffic will be alternating with flaggers, from 7 a.m. to 5 p.m. Detour routes will be marked to facilitate movement. The schedule may vary depending on the weather and unforeseen events encountered during the work.

Another major project showcasing the vision of the Harwood–De Lotbinière PPU began at the end of the summer: the redevelopment of Chicoine Street between De Lotbinière Road and Trudeau Street. The work involves continuing the transformation of the neighborhood by adding bike paths, sidewalks, lighting, and green strips. This project is receiving $2,464,000 in financial assistance from the Active Transportation Fund of Infrastructure Canada.

Project presentation in PDF format

Video presentation

Repair of the Daoust Road Overpass over Highway 40

The ministère des Transports et de la Mobilité durable informs the public that the Daoust Road overpass, which spans Highway 40 in Vaudreuil-Dorion, will be repaired this year. The project will involve repairing sections of the deck, joints, abutments, the central pier, and the bearings. Work will begin overnight from May 18 to 19 and will continue until the end of September.

Traffic Disruptions and Management

Daoust Road Overpass

• One 3.5-metre-wide lane will remain open for the duration of the project. Traffic will flow in alternating directions, controlled by temporary traffic lights.
  - Cyclists and pedestrians will be able to use the bridge.
  About twenty complete closures will be required in the evenings and at night.
  - Cyclists and pedestrians will not be able to use the bridge during these complete closures.
  - Detour routes will be marked with temporary signage.

Highway 40

• About 20 complete nighttime closures will be required in each direction.
  - Traffic will be diverted via Exit 26.
  - The speed limit will be reduced to 80 km/h within the construction zone.

Construction of a new underground reservoir

Construction of the new underground reservoir on boulevard de la Cité-des-Jeunes began in spring 2025, west of route Harwood. This reservoir, with a volume of nearly 6,000 m³, will eventually take over the role played by the water tower in the Dorion sector.

Renovation of Existing Underground Infrastructure

To maintain the City’s water and sewer systems in good condition, water main rehabilitation work is planned on Jeannotte, Duffy, Mackay, Graham, and Brunelle Streets. Reconstruction of water and sewer lines is also planned on Avenue du Curé-David, west of 2nd Avenue. The section of Avenue du Curé-David east of 2nd Avenue will undergo work in 2027.

Redevelopment of Route De Lotbinière

Work on the redevelopment of route De Lotbinière, between Harwood Boulevard and Saint-Jean-Baptiste Avenue was largely completed in the summer of 2025. This project is part of the Harwood PPU – De Lotbinière by contributing to the revitalization of the area and reducing mineralized surfaces. The addition of street lighting, sidewalks, and bike paths on this road will ensure the safety of citizens who use active transportation. Interesting fact: the development of vegetated swales includes more than 790 trees, shrubs, and plants.

Work information meeting

Frequently Asked Questions (in French)

Rue Valois

Work to complete the 2025 off-street bike path project will take place from May 19 to June 12. These activities will cause minor disruptions to the parking spaces near the construction site.

In addition, starting Wednesday, May 20, the section between 2nd Avenue and Marier Street will be closed to traffic during the work.

For all information relating to the Île-aux-Tourtes bridge, residents are invited to visit the website of the Ministère des Transports et de la Mobilité durable. On this page, you'll find everything you need to know about the project, the obstacles associated with the work in progress, the various mitigation measures put in place, and the progress and highlights of the work to maintain the existing bridge and build the new one.

Traffic obstruction and management

To find out about current restrictions, consult Quebec511.info, a practical tool to help you plan your trips.

If you have any questions or comments, please contact the Ministry using the online form or by calling 511.