Eglinton Crosstown West Extension – Advance Tunnel Project

Project Type:
Design Build Finance (DBF)
Infrastructure Type:
Contract Value:
$729.2 million
Estimated Value for Money:
To be announced at Financial Close

About the Project:

The Eglinton Crosstown West Extension (ECWE) Advance Tunnel Project is the first phase of work for the 9.2 kilometre extension of the Eglinton Crosstown LRT (future TTC Line 5). The extension will run mostly underground, westward from the future Mount Dennis station to Renforth Drive. 

Once complete, the ECWE will connect to different transit services, including the GO Kitchener Line and UP Express train service at Mount Dennis, TTC bus services at transit stops in Toronto, and GO and MiWay bus services via the Mississauga Transitway. Metrolinx is actively collaborating with the GTAA and municipal partners on the proposed alignment from Renforth Drive to the airport, which takes into account the GTAA's plans for a Regional Transit Centre.

Starting with the approximately 6-kilometre tunnelling phase of work allows a significant portion of the extension to move forward on an accelerated timeline. 

A separate contract will be issued in the future for the balance of the work, which includes building the stations, fitting-out the tunnel and installing and commissioning the systems to put the LRT in service.


  • Request for Qualifications:
    Mar 10, 2020
  • Short-list Bidders Selected:
    Aug 05, 2020
  • Request for Proposals:
    Aug 20, 2020
  • Winning Bidder Selected:
    May 20, 2021
  • Construction Begins:
  • Construction Ends:

Latest News


The scope of work includes:

  • Approximately 6 kilometres of tunnelling for the 9.2-kilometre extension
  • Design and construction of launch and extraction shafts, tunnels, as well as headwalls for emergency exit buildings and stations
  • Supply tunnel boring machines (TBMs) and install segmental precast concrete tunnel liners
  • Activities necessary to build the tunnel (e.g. utility relocations, supports for shaft and headwalls, temporary power supply, lighting, ventilation, and drainage)

Project Benefits

  • Improves access to transit for area residents
  • Reduces daily travel times for commuters
  • Economic and community growth along the future transit line with job creation opportunities
  • Reduction in traffic congestion, greenhouse gases and fuel consumption by providing a new transportation option

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Infrastructure Ontario and Metrolinx, in their sole and absolute discretion, may choose to make available on this website amendments, revisions, modifications or replacements to these documents. These documents remain open for further revision, modification, replacement or cancellation by Infrastructure Ontario and Metrolinx at any time and in no event shall either Infrastructure Ontario or Metrolinx be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with the use of or reliance on the content of these documents.