Project News Work on the island of Montréal and in Laval
Here is the list of projects underway on the island of Montréal and in Laval. Carried out by Hydro‑Québec and its suppliers, the work may affect traffic and access to homes, businesses and parking areas. We apologize for any inconvenience this may cause.
Ongoing work
This list is not exhaustive. Emergency work may be carried out without notice.
Saint Laurent and town of Mount Royal Reconfiguration of a transmission line between Laurent substation and Avenue Royalmount
To ensure the long-term operability of its facilities on the island of Montréal and meet growing demand for electricity, Hydro‑Québec will be reconfiguring a 120‑kV transmission line between Laurent substation and Avenue Royalmount. The line will cross the borough of Saint-Laurent and the town of Mount Royal.
The work involves building underground duct banks and installing splice vaults in certain areas, which will be done in stages. Hydro‑Québec will then install electric cables (cable pulling and splicing) and carry out road surface repair.
May 19 to June 5, 2026
- Zone 1 : Entrance to IKEA – Chemin de la Côte-de-Liesse Ouest
May 26 to July 10, 2026
- Zone 2 : Chemin Dalton, between Chemin de la Côte-de-Liesse and Avenue Andover
June 17 to July 3, 2026
- Zone 3 : Avenue Andover, between Chemin Dalton and Chemin Darnley
June 29 to August 17, 2026
- Zone 4 : Avenue Andover, between Chemin Darnley and Chemin Delmeade
May 19 to July 4, 2026
- Zone 5 : Section under rail line, from the intersection of Chemin Delmeade and Avenue Andover towards Avenue Royalmount
August 11 to September 18, 2026
- Zone 6 : Avenue Royalmount, between the parking lot at 6111, avenue Royalmount and 5780, avenue Royalmount, in town of Mount Royal
The work will take place Monday to Friday, 7 a.m. to 7 p.m., from May to October 2026.
The dates may change in case of unforeseen circumstances or weather conditions. Exceptionally, work may have to be carried out on weekends.
We apologize for any inconvenience this may cause.
![Link to the map illustrating the work [WEBP 28 kB]](/themes/production-et-reseau/image/zone-travaux-poste-laurent-avenue-royalmount.webp){kind=link}
- Removal of parking spaces in certain areas
- Noise, dust and mechanical vibration during certain operations
Temporary traffic disruptions in the areas affected by the work:
- Zone 1 : Partial closure of access to the IKEA store via Chemin de la Côte-de-Liesse Ouest
- Zone 2 : Chemin Dalton will be completely closed to southbound traffic during the week - Complete closure of the Chemin Dalton and Boulevard Cavendish intersection on weekends
- Zone 3 : Avenue Andover will be completely closed to eastbound traffic
- Zone 4 : Complete closure of Avenue Andover in both directions
- Zone 5 : Partial long-term closure of parking lot located at 6111, avenue Royalmount
- Zone 6 : FAvenue Royalmount will be closed to westbound traffic on weekends only (therefore, access to the parking lot at 6111, avenue Royalmount will also be closed) - Closure of the right eastbound lane of Avenue Royalmount
Note: No service interruptions are anticipated as part of the work.
- Appropriate signage will be installed and signallers will be available to ensure safety around the jobsite, as needed
- The worksite will be adequately fenced to ensure the safety of pedestrians, cyclists and drivers
- Access to residences, businesses and industries will be maintained at all times
- Traffic and bus routes will be detoured temporarily
- Detours will be put in place with special signs in the event of complete road closures
- Information panels announcing upcoming closures will be installed
Ville LaSalle Preparatory geotechnical investigation work
Hydro‑Québec must carry out certain geotechnical investigation drilling to assess soil conditions. This work is intended to prepare for a potential underground network reconstruction project near your residence in 2026. No electrical service interruptions are planned as part of this work.
Soil investigation: Vertical drilling to extract a soil core in order to analyze its properties.
The drilling work will take place near the following addresses: 1176, 1178, 1180, 1182, 1200A, 1200, and 1202 Louis‑Joliet Street.
- Investigation phase: Week of May 11, 2026
- Reconstruction work: Summer–Fall 2026*
*This phase will be the subject of a subsequent detailed communication.
Shevchenko Boulevard:
- Closure of the right‑hand lane on Shevchenko Boulevard. However, this obstruction will not directly affect the residences located on Louis‑Joliet Street.
- Please note that the pedestrian pathway between Louis‑Joliet Street and Shevchenko Boulevard will be temporarily closed for the duration of the work, as the drilling will be carried out in front of the stairway.
The work will be carried out during the daytime, and appropriate signage will be installed as required.
Saint-Laurent Work on underground duct banks
To meet the growing demand for energy in Dorval and in the boroughs of Saint-Laurent and Lachine, Hydro‑Québec is building a 25-kV energy corridor between Dorval and Laurent substations to reinforce the distribution system.
- Preparation of the worksite, including work areas, access areas and security measures
- Excavation and shoring
- Installation of splice vaults
- Construction of underground duct banks
- Demolition and surface repair, including:
- road paving
- concrete sidewalks
- earthwork and sodding
- related work and site restoration
From June to December 2026, Hydro-Québec will carry out major work at the following locations:
- Rue Griffith, between Laurent substation and Chemin de la Côte-de-Liesse
- From 8575 Chemin de la Côte-de-Liesse to Rue de la Station
- noise
- vibration
- dust
- increased truck and heavy equipment traffic
To minimize these impacts, Hydro-Québec will implement the following mitigation measures:
- Schedule: Monday to Friday, with some exceptions.
- Traffic: Appropriate signage will be installed and signallers will ensure safety around the jobsite, as needed.
- Building access: At least one secure access point will be maintained at all times. It will be sufficiently wide to allow residents to access buildings and parking lots along the path of work.
- Dirt and dust: Regular watering and cleaning of the roads.
SUD-OUEST Work on Saint Patrick, Bridge and Wellington streets
To meet the growing electricity demand and ensure the long term operability of its facilities on the island of Montréal, Hydro‑Québec is building an underground transmission line between Guy substation and the new Des Irlandais substation.
Major work to build the underground concrete duct banks and rebuild the roadway will be carried out.
April 22 to May 11, 2026:
- Rue Saint-Patrick (between de Montmorency and Bridge)
May 29 to June 15, 2026:
- Intersection of Saint-Patrick and Bridge
June 2 to June 19, 2026:
- Rue Bridge (between Saint-Patrick and Wellington)
June 19 to July 6, 2026:
- Intersection of Wellington and Bridge
Project News - Saint Patrick, Bridge and Wellington streets 2026 [PDF 329 kB]
- Temporary disruptions on Saint Patrick, Bridge and Wellington streets.
- Full or partial closure of certain intersections as work progresses.
- Temporary adjustments to traffic lights.
- Possible impacts on public transit, including STM bus routes 61 and 74.
- Safety and mobility will be ensured through signage and ongoing monitoring.
- Detours via Rue de Condé and Rue Centre have been planned and will be clearly marked.
- To facilitate construction site access, trucks will be temporarily permitted on Rue Charlevoix and Rue Centre.
- In cooperation with the STM, bus routes 61 and 74 will be adjusted to ensure service continuity.
SAINTE‑ANNE‑DE‑BELLEVUE Rebuilding an underground vault
Hydro‑Québec will be doing maintenance work on underground infrastructure and the power system.
From April 13 to June 25, 2026, between 7 a.m. and 5 p.m. or 6 p.m.
Traffic restrictions will be in effect between Boulevard des Anciens‑Combattants and Poultry Cottages. These will include the removal of a service road and a reduction of the speed limit to 30 km/h.
![Link to the map illustrating the work [JPG 319 ko]](/data/projets/travaux-montreal-laval/jpg/Saint-Anne-de-Bellevue.jpg){kind=link}
The work will result in the closure of a service road and a reduction of the speed limit to 30 km/h to ensure the safety of the public and workers. Temporary lane closures, occasional traffic disruptions, dust, and temporary damage to the roadway or nearby infrastructures are also to be expected during the construction period.
Installation of appropriate signage and use of signallers, as needed, to ensure road safety and keep traffic moving smoothly.
SUD‑OUEST Construction of an underground 315‑kV transmission line between Guy and Des Irlandais substations
To meet the growing electricity demand and ensure the long‑term operability of its facilities on the island of Montréal, Hydro‑Québec is building an underground transmission line between Guy substation and the new Des Irlandais substation.
Underground duct work, new concrete encasement construction and junction box installation.
Stage 1: The first stage of the work will be carried out between March 23 and April 1, 2026.
Work will take place at the Place des Bassins section of the Lachine Canal National Historic Site.
- Heavy vehicle traffic may obstruct certain sections of the pedestrian corridor around the park and the bike path.
Stage 2: The second stage of the work will be carried out between April 1 and 17, 2026.
Closure of Rue De Montmorency between the bike path and Rue Saint‑Patrick:
- The east‑side sidewalk will be closed off.
- The bike path will also be closed off, but cyclists can pass through the site by dismounting.
- Work Information Montréal March and April 2026 [PDF 286 kB]
Place des Bassins section of the Lachine Canal National Historic Site
- Signalers on site will direct traffic and ensure pedestrian and cyclist safety.
- Appropriate signage will be installed around the work site.
Closure of Rue De Montmorency between the bike path and Rue Saint‑Patrick
- Signalers on site will direct traffic and ensure pedestrian, cyclist and driver safety.
- A traffic corridor will allow motorists to access driveways.
- Uninterrupted pedestrian and bike path access.
- Two lanes will remain open on Rue Saint‑Patrick.
City of Laval Major work to improve the quality of electricity service in the districts of Laval‑les‑Îles, Renaud‑Coursol and Laval‑des‑Rapides
Work is underway to improve service reliability in several sectors of Laval. We will continue to invest in the power system to provide our customers with reliable, high‑quality service.
Hydro‑Québec crews have inspected the distribution lines that supply these districts to collect data and identify potential issues, including those that could lead to outages. Based on the observations, some corrective measures have already been implemented and other maintenance work has been completed or is planned.
The work includes:
- Vegetation control near power lines to reduce outages
- Maintenance work such as equipment replacement (insulators, wires, etc.) to strengthen and modernize the system
- Interventions in targeted areas with strong potential to improve service quality
Laval‑les‑Îles
Renaud‑Coursol and Laval‑des‑Rapides
In some cases, planned service interruptions may be required so Hydro‑Québec employees or contractors can safely carry out maintenance, repairs and system upgrades.
Sud‑Ouest Belt Line tower removal
Hydro‑Québec will dismantle the Belt Line towers along the Lachine Canal National Historic Site. The work is necessary to address safety risks, as the towers are no longer in use and some of their foundations have significantly deteriorated.
Note: A project to showcase the Belt Line’s heritage value is currently under study with a view to preserve a record of the city’s early electrification.
The work will be carried out along the bike path that runs parallel to Rue Saint‑Patrick, from Pont Saint‑Henri to Rue Pitt.
The work to dismantle the towers will take place from February 16 to March 9.
Schedule: Monday to Friday, 7 a.m. to 7 p.m.
To remove tower 11 (see map in project news bulletin ‑ PDF 250 kB), Rue Saint‑Patrick westbound will be closed on February 23 to install a crane.
- Access to the bike path will be maintained.
- A team of signalers will ensure safety around the worksite near the street and crosswalk, as well as near the bike path and roundabout.
Saint‑Laurent borough and Town of Mount Royal Construction of an underground power transmission line between Saraguay and Mont‑Royal substations.
To ensure the long-term operability of its facilities on the island of Montréal and meet growing demand for electricity, Hydro‑Québec is building an underground transmission line between Saraguay and Mont‑Royal substations. The line will cross the Saint‑Laurent borough and Town of Mount Royal.
After installing splice vaults and completing the work related to the underground conduits, Hydro‑Québec will carry out the following work in stages and in certain areas in the coming months:
- Installation of electric cables (cable pulling and splicing)
- Road surface repair
Borough of Saint‑Laurent
- Boulevard Thimens, between Boulevard Henri‑Bourassa and Rue Cousens, from October 20, 2025, to the end of summer 2026
- Boulevard Thimens, between Chemin du Bois‑Franc and Rue Dobrin, from October 20, 2025, to the end of summer 2026
- Boulevard Thimens, between Boulevard Poirier and Rue Garand, from October 27, 2025, to the end of summer 2026
- Boulevard Thimens, between Rue Bégin and Rue Beaulac, from November 3, 2025, to the end of summer 2026
- Boulevard Thimens, between Boulevard Cavendish and Rue Beaulac, from November 10, 2025, to the end of summer 2026
- Boulevard Thimens, between Rue Samson and Rue Varin, from spring to summer 2026
- Boulevard Alexis‑Nihon, between Rue Billeron and Chemin de la Côte‑Vertu, from September 8 to December 22, 2025
- Boulevard Alexis‑Nihon, between Rue Beaudet and Rue Nantel, from September 2 to December 22, 2025
- Rue Saint‑Louis, between Rue Marlatt and Rue Tait, from September 2, 2025, to the end of summer 2026
- Rue Saint‑Louis, between Rue Crevier and Boulevard Décarie, from November 17, 2025, to the end of summer 2026
- Rue Dion, between Avenue Sainte‑Croix and Rue Ouimet, from December 1, 2025, to the end of summer 2026
Ville de Mont‑Royal
- Chemin Lucerne, between Avenue Johnson and Avenue Mitchell, from October 13, 2025, to the end of summer 2026
- Chemin Lucerne, at the intersection of Croissant Lanark, from October 13, 2025, to the end of summer 2026
Work areas
- Traffic will be partially blocked
- Removal of parking spaces along the streets as needed
- Noise from machinery during certain operations
- Ongoing noise from a generator when connecting the cables. This work requires very specific thermal conditions within the vault, and the equipment must therefore remain in operation 24 hours a day.
Note: No service interruptions are anticipated as part of the work.
- Installation of appropriate signage
- Uninterrupted access to homes and businesses at all times
- Flag persons to ensure safety around the jobsite, as needed
- Fencing to separate the pedestrian walkway from the jobsite
Mercier-Hochelaga‑Maisonneuve Grounding work on fence poles at Longue‑Pointe substation and partial vegetation clearing
Hydro‑Québec is carrying out grounding work on the facilities at Longue‑Pointe substation. This work is essential to ensure the smooth operation of the transmission system, as well as the safety of facilities, equipment, workers and the public.
The grounding grid plays an essential role in the operation of the transmission system. It ensures the proper functioning of the system’s protective devices.
As part of the the provincial anti‑theft grounding conversion program, the grounding upgrade has been started at Longue‑Pointe substation.
Grounding work will also be carried out on the poles of the fence separating the substation from houses located on Rue Beauclerk. To allow access, the hedges around these poles must be trimmed. Vegetation control measures will therefore be carried out.
- Grounding work on fence poles: From November 17 to December 18, 2025, during the day, on weekdays. If necessary, the work could be continued from February 16 to March 16, 2026.
- Vegetation control: Occasional work between November 17 and December 18, 2025.
- Grounding work has been underway for several months at Longue‑-Pointe substation. The work is carried out on weekdays during the day and does not cause any specific disturbances.
- Trimming of the hedges could temporarily reduce the privacy provided by the vegetation.
- As a precautionary measure, we ask residents to respect a two-metre safety corridor around the fence during the work period.
- The clearing will only be carried out around the fence poles (spaced roughly 10 metres apart).
- To prevent any risk of fire, Hydro‑Québec will spray the site with water during each intervention.
Rivière‑des‑Prairies–Pointe‑aux‑Trembles Replacement of towers on 735‑kV lines in the greater Montréal area
Hydro‑Québec is carrying out work to upgrade and secure the transmission system in the greater Montréal area. This major project involves the addition of anti‑cascading towers on four 735‑kV lines to ensure reliable and safe electricity service across the region.
Operations include:
- Dismantling and replacing current towers with more efficient anti-cascading towers of the same size that comply with current standards
- Upgrading foundations and related equipment
Project objectives and benefits
- Secure the power grid and supply in the greater Montréal area
- Reduce the risk of widespread damage and extended outages
- Speed up service restoration in the event of damage
Line 7009 – Work in 2025 and 2026 along the corridor through the Rivière‑des‑Prairies–Pointe‑aux‑Trembles borough between Rue Notre‑Dame and Boulevard Métropolitain
Line 7102: Work in 2027, details coming soon
Work schedule subject to change.
- Limited access to the rights of way while work is underway
- Heavy machinery and intermittent noise during work hours
- Temporary closure of some roads and sidewalks near
Hydro‑Québec’s towers and power line right-of-way.
More specifically:
- Rue de Montigny
From May 3 to June 21: The street will be closed to traffic between 36e Avenue and 39e Avenue. The north sidewalk will be closed, but a safe pedestrian corridor will be accessible on the south side for the duration of the work.
- Rue Sherbrooke
From April 20 to July 3: Disruptions between 36e Avenue and 39e Avenue with closure of reserved lanes and a sidewalk, and no parking in and around the work area.
Nighttime disruptions are also planned (exact dates and times will be provided at a later date): Reduced number of traffic lanes, closure of one sidewalk and no parking in and around the work area.
- Boulevard Henri Bourassa
From April 27 to June 23: Disruptions between 36e Avenue and 34e Avenue, with reduced traffic lanes. Nighttime disruptions are also planned between 36e Avenue and 40e Avenue (exact dates and times will be provided at a later date): Reduced number of traffic lanes, closure of turnaround (U-turn) and detour by 40e Avenue when necessary. Signalers will be on site when necessary to ensure pedestrian safety.
- Rue de Montigny
No service interruptions are expected during the work.
- Fencing around the work sites
- Exclusion fencing as needed to protect the brown snake, a threatened species, and its natural habitat during the work
- Ongoing communication with citizens
City of Côte‑Saint‑Luc and Côte‑des‑Neiges–Notre‑Dame‑de‑Grâce sectors Reconstruction and modernization of the underground power grid
Several Hydro‑Québec projects are underway in the Côte‑Saint‑Luc and Côte‑des‑Neiges–Notre‑Dame‑de‑Grâce sectors. Their objectives are to improve service quality (distribution projects), increase equipment capacity and ensure grid reliability (transmission projects).
Hartwell sector: The work involves rebuilding the underground power system on Avenue Sabin and Avenue Redwood and Chemin Holland and Chemin Weizmann.
Heywood and Cavendish sector: The work involves rebuilding underground infrastructure.
- Work info – Heywood May 2026 [PDF 93.1 kBkilobyte]
- Work info – Heywood April 2026 [PDF 94.7 kBkilobyte]
- Work Info – Heywood September 2025 [PDF 257 kBkilobyte]
Merrimac sector: The work involves upgrading the underground power system.
- Project News ‑ Merrimac phase 1 – November 2025 [PDF 270 kBkilobyte]
- Project News ‑ Merrimac phase 2 – April 2026 [PDF 357 kBkilobyte]
King‑Edward sector: The work involves upgrading the underground power system in the King‑Edward Avenue area in Côte‑Saint‑Luc and Côte‑des‑Neiges–Notre‑Dame‑de‑Grâce.
Project to upgrade the power system between Aqueduc and Saraguay substations: The work involves the construction of a new substation and transmission line in Côte‑Saint‑Luc. For more details, see the project page.
Contact us
To learn more or share your questions and comments about the project.
Info-Project Line: 1-866-388-1978