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.
Montréal Power system upgrade in Ville‑Marie – Saturday, November 7
Hydro‑Québec must carry out urgent work on the power system on Saturday, November 7, in the eastern part of the Ville‑Marie borough in order to upgrade the distribution system from 12 to 25 kV.
The purpose of the work is to increase the grid’s voltage in the area, which will boost the grid’s capacity and enhance the reliability of the electricity supply.
As we approach the winter peak period, this work is essential to modernize our facilities, ensure the safe operation of the power system and provide a more reliable service in the long term.
The work will take place on Saturday, November 7, 2026. A service interruption is planned from 7:00 a.m. to 7:00 p.m.
Affected area:
- Area 1: Fullum / Larivière intersection
- Area 2: De Lorimier / Logan intersection
- Area 3: Papineau / Viger intersection
- Area 4: Area bounded by Berri, Saint‑Antoine, Panet and Notre‑Dame East
The planned service interruption will affect residential and business customers in the area from 7 a.m. to 7 p.m., as well as certain traffic lights.
To complete this major work in a single day, Hydro‑Québec will deploy 70 workers. Their presence and that of their vehicles may cause traffic disruptions on certain streets.
Hydro‑Québec’s work will also coincide with work by the Ministère des Transports et de la Mobilité durable (MTMD) that requires the complete closure of access points via Rue Notre‑Dame Est and Boulevard Robert‑Bourassa to the Ville‑Marie Expressway (A‑136); a detour via Rue Saint‑Antoine will be set up. As this is a very busy area, significant traffic delays are expected. Motorists are advised to plan their trips accordingly.
Hydro‑Québec thanks the public and road users in advance for their understanding and cooperation.
To minimize the impact of the work, Hydro‑Québec will implement the following measures:
- Planned detours coordinated with the Ville‑Marie borough and the MTMD
- Measures to ensures the proper operation of affected traffic lights or, if necessary, a police presence at the affected intersections
- Direct notifications to all residential and business customers affected by the service interruption
- Fully mobilized crews to optimize every stage of the work and restore service as quickly as possible
Montréal Deconstruction of the building located at 7401, boulevard Métropolitain Est
Hydro‑Québec must deconstruct the building located at 7401, boulevard Métropolitain Est, near Langelier substation. The work aims to secure the site and prepare it to be used in the future to meet the long‑term needs of the power grid.
Aware of the heritage value attached to the building, Hydro‑Québec conducted numerous studies and took several steps in recent years to assess whether it could be preserved and reused. Further to these studies, Hydro‑Québec chose to deconstruct the building.
The work will be carried out in a way that minimizes impacts on neighbours. Special attention will also be paid to recovering and repurposing materials whenever possible.
The work will primarily include securing the site, dismantling the building, sorting and recovering materials and restoring the grounds.
Work will begin the week of October 26, 2026, on Hydro‑Québec property located at 7401, boulevard Métropolitain Est, near Langelier substation in the borough of Anjou.
Local residents and passersby may notice:
- machinery and trucks near the work site
- noise from deconstruction and dust during certain work phases
Hydro‑Québec will make every effort to minimize these nuisances and limit disruptions for residents.
Montréal and Dorval Dorval‑Laurent Energy Corridor
Hydro‑Québec is carrying out underground conduit work to build a 25‑kV power corridor between the Dorval and Saint‑Laurent substations. This project aims to meet the growing demand for electricity in Dorval, Lachine and Saint‑Laurent, while improving the reliability and capacity of the electrical distribution network in this area.
- Site preparation and setup, including the installation of work zones, access routes and safety measures
- Excavation and vertical shoring
- Installation of underground splice vaults (access chambers)
- Construction of underground duct banks
Demolition and restoration of affected surfaces, including:
- Reconstruction of asphalt pavement
- Restoration of concrete sidewalks
- Grading of disturbed areas and lawn restoration
From August to November 2026, Hydro‑Québec will carry out major construction work on:
- Côte‑de‑Liesse Road between Highway 13 and Renaud Avenue
- Renaud Avenue between Côte‑de‑Liesse Road and Ryan Avenue
- Ryan Avenue between Renaud Avenue and 43rd Avenue
- 43rd Avenue between Ryan Avenue and Côte‑de‑Liesse Road
View work notice: Work Notice – Dorval‑Laurent Energy Corridor – July 2026 [PDF 245 kB kilobyte].
- Noise
- Vibrations
- Dust
- Increased traffic from trucks and heavy equipment
To minimize the impacts of the work, Hydro‑Québec will implement the following mitigation measures:
- Work schedule: Monday to Friday, except under special circumstances
- Traffic management: installation of appropriate signage, detour routes and the presence of traffic control personnel
- Building access: at least one safe and adequately sized access route will be maintained at all times for residents and businesses along the duct bank route, as well as for parking areas
- Dust and dirt control: regular watering and frequent cleaning of roadways and work areas
Montréal Hochelaga substation and underground transmission line
Construction of underground electricity transmission lines between the Notre-Dame substation and the future Hochelaga substation in the Mercier–Hochelaga-Maisonneuve borough.
For more detailed information on the work schedule and the areas affected, we invite you to consult the Hochelaga Project web page:
The project includes the construction of a 315/25-kV substation, supplied by two 315-kV transmission lines (circuits 3212 and 3213) connecting the future substation to Notre-Dame substation. The underground lines will each extend approximately 5 km.
These new facilities will help improve system reliability and increase capacity to meet growing needs in the Mercier–Hochelaga-Maisonneuve borough.
Work will be carried out in successive phases, including preparation, excavation, installation, and repair, among others. Under the plan, disruptions and inconveniences should be kept to a minimum.
Based on the borough and the phase of work underway, the following could be involved:
- an increased number of workers and machinery;
- temporary disruptions for traffic, pedestrians or cyclists;
- noise and dust during active worksite hours.
- clear signage, and signalers or police as required;
- maintained access to residences, businesses and essential services such as public transit (bus stops relocated if necessary);
- work scheduled mainly during weekdays.
MONTRÉAL AND WESTMOUNT Construction of the Atwater-Maisonneuve underground transmission line
To ensure the long-term operability of its facilities on the island of Montréal and meet the growing demand for electricity, Hydro‑Québec is building an underground transmission line between Atwater and Maisonneuve substations by way of Saint-Patrick substation. This line will be built primarily in the Sud-Ouest borough and partly in Westmount.
This new infrastructure will replace an existing line that was commissioned in 1970 and has reached the end of its useful life. It will be built inside an underground conduit and designed to operate at 315 kV once fully operational.
Hydro‑Québec will begin civil engineering work related to the installation of underground conduits in September 2026 on Avenue Greene, between Saint-Antoine Ouest and Workman.
Other work related to the installation of underground conduits, as well as the installation of splice vaults and electric cables (cable pulling and splicing), and the repaving of streets, will take place in 2027. Further details regarding these phases will be provided at a later date.
The work will be carried out on Avenue Greene, between Saint-Antoine Ouest and Workman, by phases and by zones:
- Zone 1: Greene north of Rue Saint-Jacques, work on several weekends – October 15 through December 20, 2026
- Zone 2: Intersection of Greene and Rue Saint-Jacques (north portion), work on several weekends – October 15 through December 20, 2026
- Zone 3: Intersection of Greene and Rue Saint-Jacques (south portion) – October 13 through December 23, 2026
- Zone 4: Greene south of Rue Saint-Jacques – October 15 through December 21, 2026
- Zone 5: Greene north of Rue Delisle, including the intersection – January 1 through March 5, 2027
- Zone 6: Greene, from the intersection of Rue Delisle to Workman – November 23 through December 21, 2026
These dates may change in case of unforeseen circumstances or weather conditions. Please note that work may occasionally have to be carried out on weekends.
We apologize for any inconvenience. Thank you for your understanding.
- Partial or complete closure of certain affected sections:
- Zone 1: Complete closure, with local traffic permitted and a detour in place.
- Zone 2: Complete closure of Greene and partial closure at the intersection of Rue Saint-Jacques.
- Zone 3: Partial closure of the intersection of Greene and Rue Saint-Jacques.
- Zone 4: Partial closure of Greene.
- Zone 5: Partial closure of Greene at the intersection of Rue Delisle.
- Zone 6: Partial closure of the intersection of Greene and Rue Delisle.
- Removal of parking spaces along affected road segments
- Changes in the direction of traffic on Greene between Workman and Delisle.
- Noise from machinery during certain manoeuvres and dust.
Note: No service interruptions are anticipated as part of this work.
- Appropriate signage
- Uninterrupted access to homes and businesses
- Signallers will be on hand, as well as police as needed, to ensure safety around the jobsite.
- Fencing to separate the pedestrian walkway from the jobsite.
Montréal Construction of an underground 315‑kV transmission line between Guy and des Irlandais substations
To meet growing demand for electricity 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.
Following the work to build the underground duct banks and rebuild the roadway, new work must be carried out to complete the connection for the commissioning of the underground power system. This phase of work includes pulling and connecting of the electric cables installed in the underground infrastructures.
- September 14 to 18: Rue Richmond (between rues Notre Dame and William)
- September 14 to November 20: Place des Bassins (cycling path, pedestrian access)
- September 25 to October 30: rue De Montmorency (between the bike path and la rue Saint-Patrick)
- Temporary disruptions affecting traffic, parking, pedestrians and cyclists;
- More workers and machinery;
- Noise and dust during the work.
- Appropriate signage and flaggers or police presence as necessary
- Uninterrupted pedestrian access to residences, businesses and essential services, as well as continued public transit service with stops relocated as necessary
Montréal Construction of an underground 315‑kV transmission line between Guy and des Irlandais substations
To meet growing demand for electricity 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 take place on Saint‑Patrick, Bridge, Mill and Wellington. Traffic on the Victoria Bridge will be limited to one lane in both directions during morning rush hour.
This work will be carried out in several successive phases to keep impacts to a minimum. However, temporary disruptions to traffic and certain access points should still be expected.
From late May until mid‑September, depending on work progress, the following areas will be affected:
- Saint‑Patrick/Bridge intersection
- Rue Bridge (between Saint‑Patrick and Wellington)
- Wellington/Bridge intersection
- Rue Bridge (between Wellington and Mill)
- Rue Bridge (between Mill and Costco entrance)
- Beginning late August, traffic limited to one lane in both directions on the Victoria Bridge during morning rush hour
- Temporary disruptions on Saint‑Patrick, Bridge, Mill and Wellington
- 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
Note: No power outages are planned as part of these works, which will be carried out in two phases.
- Safety and mobility will be ensured through the posting of signage and ongoing monitoring.
- Detours via de Condé and Centre are planned and will be clearly marked.
- To facilitate construction site access, trucks will be temporarily permitted on Charlevoix and Centre.
- In cooperation with the STM, bus routes 61 and 74 will be adjusted to ensure service continuity.
Montréal and 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 is currently installing electric cables (cable pulling and splicing).
September 28 to December 18, 2026
- Zone 2 : Chemin Dalton, between Chemin de la Côte-de-Liesse and Avenue Andover
September 28 to December 18, 2026
- Zone 4 : Avenue Andover, between Chemin Darnley and Chemin Delmeade
September 28 to December 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 December 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.
- 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
Montréal Power distribution line upgrades
Hydro‑Québec is upgrading a power distribution infrastructure in the Outremont borough. The project serves to optimize overhead-underground structures and replace outdated equipment.
The power line mainly runs through alleys and private backyards in the area.
The project will mainly involve:
- Replacing conductors, transformers and roughly 50 poles that have reached the end of their service life
- Performing vegetation control work in areas where tree branches are compromising safety or service continuity
This work will reduce power outages and ensure more reliable service in the long term
The work will take place in various areas of Outremont, mainly in alleys and private backyards May 11 through December 21, 2026.
- Zone 1: Back lot between Avenue Querbes and Rue Durocher, and on Avenue Fairmount Ouest
- Zone 2: Back lot between Avenue Querbes and Avenue De L’Épée, and on Avenue Elmwood
- Zone 3: Back lot between Avenue Glencoe and Avenue Hazelwood, and on Avenue Willowdale
- Zone 4: Back lot between Avenue McDougall and Avenue Outremont, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 5: Back lot between Rue Hutchison and Avenue Nelson, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 6: Back lot between Avenue Outremont and Avenue Wiseman, and on Avenue Elmwood
- Zone 7: Back lot between Avenue De L’Épée and Avenue Bloomfield, and on Avenue Elmwood
- Zone 8: Back lot between Rue Hutchison and Avenue Nelson, and on Rue Villeneuve Ouest
- Zone 9: Back lot between Avenue Courcelette and Avenue Beloeil, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 10: Back lot between Avenue Wiseman and Avenue Stuart, then on Avenue Saint-Viateur Ouest
- Zone 11: Back lot between Avenue Lajoie and Avenue Kelvin, then on Avenue de Vimy
- Zone 12: Back lot between Avenue Bloomfield and Avenue McDougall, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 13: Back lot between Avenue Springgrove and Avenue Maplewood, and on Avenue Springgrove
- Zone 14: Back lot between Avenue Vincent-D'Indy and Avenue Glencoe, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 15: Back lot between Avenue Nelson and Avenue McNider, and on Avenue Villeneuve
- Zone 16: Back lot between Avenue Glencoe and Avenue Hazelwood, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 17: Back lot between Avenue Hazelwood and Avenue de la Brunante, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 18: Back lot between Avenue de la Brunante and Avenue de Stirling, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 19: Back lot between Avenue Ainslie and Avenue Dunlop, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 20: Back lot between Avenue de Vimy and Avenue Robert, and on Avenue Kelvin
- Zone 21: Back lot between Rue Hutchison and Rue Durocher, and on Avenue Fairmount Ouest
- Zone 22: Back lot between Avenue Beloeil and Avenue Claude-Champagne, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 23: Back lot between Avenue Querbes and Rue Durocher, and on Avenue Fairmount Ouest
- Zone 24: Back lot between Avenue Saint-Germain and Avenue de Vimy, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 25: Back lot between Avenue Querbes and Rue Durocher, and on Avenue Saint-Viateur Ouest
- Zone 26: Back lot between Rue Hutchison and Avenue Nelson, and on Rue Villeneuve Ouest
- Zone 27: Back lot between Avenue Rockland and Avenue Ainslie, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 28: Back lot between Avenue Querbes and Avenue De L’Épée, and on Avenue Laurier
- Zone 29: Back lot between Avenue Davaar and Avenue Rockland, and on Chemin de la Côte‑Sainte‑Catherine
- Zone 30: Back lot between Rue Hutchison and Avenue Querbes, and on Avenue Laurier
The dates may change due to unforeseen circumstances or weather conditions.
Exceptionally, work may have to be carried out on weekends.
We apologize for any inconvenience this may cause.
Construction Zone – Distribution Line Repair – Outremont Borough [webp]
In order to safely carry out certain technical operations, service interruptions will be necessary at regular intervals. They are planned for Wednesdays and may be pushed back to Thursdays, between August 5 and October 28, 2026.
Affected residents will be notified in advance.
The work will be done mainly in alleys and private backyards. It will require cranes, specialized vegetation control crews and the replacement of around 50 poles.
- Noise, dust and equipment on worksite
- Occasional alley closures
- Alley blocked to traffic and parking during the work
- Need for work crews to temporarily access some backyards
- Limited impact on traffic
- Vegetation control work
- Installation of appropriate signage
- Uninterrupted access to homes and businesses
- Uninterrupted pedestrian access
- Signallers to ensure safety around the jobsite, as needed
- Installation of fencing to separate the pedestrian walkway from the jobsite
Montréal 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.
Montréal 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.
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.
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.
Laval Major work to improve the quality of electricity service
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.
Montréal 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
Montréal and City of Côte‑Saint‑Luc 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.
Upcoming electrical work.
Heywood and Cavendish sector: The work involves rebuilding underground infrastructure.
- Work info – Heywood July 2026 [PDF 430 kB kilobyte]
- 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.
Montréal Power system upgrades in the Mont-Royal area
To improve the quality and reliability of the electricity service and ensure the long-term operability of its facilities in Mont-Royal, Hydro-Québec is carrying out major upgrades on the distribution network within the area bounded by rues Jean-Talon, de l'Acadie and chemins de la Côte-de-Liesse and Canora. Work will continue until fall 2027.
The work includes, in particular, replacement of electric conductors, transformers and around 300 poles that have reached the end of their useful life.
Work may also require vegetation control, for example tree pruning, and as required, felling trees, to clear power lines to enable work to be carried out safely and efficiently.
- Fall 2026 - Spring 2027 : Preliminary work
- Spring 2027 - Fall 2027 : Major work
The area in question mainly crosses through backyards in the properties in the area.
As work could cause some inconvenience, in particular related to access to property, noise and vegetation control work, Hydro-Québec would like to thank residents in advance for their cooperation.
To minimize the impacts, Hydro-Québec has planned the following measures:
- planning the work to limit the impact on access to homes;
- advance notice to residents regarding planned work and service interruptions.
![Work zone map [WEBP 28 ko]](/themes/projets/travaux-montreal-laval/images/zone-travaux-atwater-maisonneuve.webp){kind=link}
![Link to the map illustrating the work [WEBP 28 kB]](/themes/projets/travaux-montreal-laval/images/zone-travaux-poste-laurent-avenue-royalmount.webp){kind=link}
![Construction Zone – Distribution Line Repair – Outremont Borough [webp]](/themes/projets/travaux-montreal-laval/images/zone-des-travaux-refection-ligne-de-distribution-arrondissement-outremont.webp){kind=link}
![Link to the map illustrating the work [JPG 319 ko]](/data/projets/travaux-montreal-laval/jpg/Saint-Anne-de-Bellevue.jpg){kind=link}
Contact us
To learn more or share your questions and comments about the project.
Info-Project Line: 1-866-388-1978