Work Info

The ministère des Transports et de la Mobilité durable is informing road users that reconstruction work on Route 340 (Boulevard de la Cité-des-Jeunes) will resume on April 15 and continue until the end of November 2026. This project aims to improve access to the future hospital of Vaudreuil-Soulanges. 

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

April 22 to 24

Alternating traffic on Cité-des-Jeunes Boulevard (between Gare Boulevard and Floralies Street) with traffic controllers on site, from 9 a.m. to 3 p.m., due to pothole repair work. 

April 24, 8 p.m. to April 27, 5 a.m.

• Closure of Exit 2 ramp on Highway 30 eastbound (Route 340, Boulevard de la Cité-des-Jeunes, Saint-Lazare)
• Closure of the ramp leading from Route 340 to Highway 30 eastbound

April 20–30  (Area west of Highway 30)

One eastbound lane is closed between Chemin de la Petite-Rivière and Highway 30

• 2 lanes in each direction
• 1 lane eastbound and 2 lanes westbound at the A-30
• 1 lane at Exit 2

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  

From mid-May to the end of July

• Route 340 will be completely closed 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.
• Complete closure of Exit 2 (Saint-Lazare, Boulevard de la Cité-des-Jeunes) on Highway 30 westbound.
• Complete closure of Chemin de la Petite-Rivière (local traffic permitted).

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.

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.

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).

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 and is expected to last approximately two months. The schedule may vary depending on weather conditions and any unforeseen issues that arise 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

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)

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.

Montée Cadieux

Hydro-Québec will be carrying out various works to improve the power grid. These works will cause traffic disruptions from April 21 to 24, from 8:30 a.m. to 4:00 p.m., between Harwood Road and FX-Tessier Street. Traffic will be directed in alternating directions under the supervision of flaggers.