Lakeshore General Hospital : New Emergency Department

The Project

  • The construction of a new Emergency Department at the Lakeshore General Hospital (LGH) is intended to replace its current outdated infrastructure. 
  • The project will see the construction of a new 8300m² three-storey building including:
    • 38 stretchers in cubicles;
    • a 12-bed Short-term Hospitalization Unit in physical health;
    • a 6-bed Short-term Intervention Unit in mental health.
  • The new building will make include added:
    • examination rooms;
    • pre-triage and triage zones;
    • medical imaging rooms;
    • a 10-seat rapid assessment zone.
  • Once completed, the new Emergency Department will be a modern, functional, and integrated space that maximizes the care and services provided and supports patients’ recovery.

Benefits to the Community

As this is one of the busiest Emergency Departments in Montréal, this important project will ensure we can better meet the needs of the West island community, which is steadily growing and aging.

The construction of a new Emergency Department will result in:

  • increased clinical efficiency;
  • improved coordination of care;
  • reduced wait times and shorter hospital stays;
  • modernized facilities that are safe and feature the latest in technology;
  • the highest infection prevention and control standards.

Project Progression

In July 2023, Cabinet approved the project’s opportunity case and green-lighted the development of a business case, which is the step that precedes execution (that is, construction) of the project.

Preparation of the business case includes drafting detailed plans and specifications, estimating the required budget and resources, and planning the work to be carried out. 


Inclusion in the Plan québécois des infrastructures (PQI)Spring 2018
Acceptance of the opportunity case (DO)July 2023
Acceptance of the business case (DA)Autumn 2024
Start of construction workSpring 2025
Completion of construction workAutumn 2027
Open to usersSpring 2028

Watch the video on the project

  Please note that the 3D images shown in the video to not represent the architectural design of the new Emergency Department. The architectural design will be developed in preparing the business case.

New modular Emergency Department

Until the New Emergency Department is Built...

The CIUSSS de l’Ouest-de-l’Île-de-Montréal has installed a modular building at the Lakeshore General Hospital so that it can temporarily relocate the Emergency Department.

The new modular Emergency Department provides a modern environment that meets existing standards, is easier access, and ensures a safer environment in which to provide the community with a better quality of care and services. 

The new Emergency Department opens to the public on May 15, 2024.

To learn more, click here.

Project-related Communications

The Montréal West Island CIUSSS, in collaboration with the Société québécoise des infrastructures (SQI) and the Ministry of Health and Social Services (MSSS), wants to keep its partners and the community informed throughout the project.

This page will be updated continuously. Check back regularly!

Contact the team

 Email us at

  • For any questions or comments concerning this project;
  • To register to receive information concerning the construction work.

Public Information Session

A public information session will be held when the business case for the new Emergency Department has been approved by Cabinet.

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