Ontario Line

Project Type:
DBF & DBFOM – Design Build Finance & Design Build Finance Operate Maintain
Infrastructure Type:
Contract Value:
To be announced at Financial Close

About the Project:

The Ontario Line is a 15.6-kilometre stand-alone rapid transit line that will connect the Ontario Science Centre to Exhibition/Ontario Place. Over half of the route is planned to run underground through new tunnels, with the remainder running along elevated and at-grade rail corridor sections of track. Fifteen stations are proposed, with numerous connections to the broader transit network, including GO Transit rail services, the Toronto Transit Commission's subway Lines 1 and 2, the future Line 5 (Eglinton Crosstown LRT), as well as numerous bus and streetcar routes.

The Ontario Line is one of four priority transit projects announced by the Province in 2019 for the Greater Toronto and Hamilton Area. Planning is underway for all four subway projects and procurements for the subway program are being staged to ensure each project is delivered successfully.

Latest News

Project Status

The Ontario Line is being delivered as three separate public-private partnership (P3) procurement contracts:

  1. Rolling Stock, Systems, Operations and Maintenance (RSSOM): RFQ issued June 2, 2020; RFP issued December 14, 2020
  2. Southern Civil, Stations and Tunnel RFQ issued June 2, 2020; RFP issued December 14, 2020
  3. Northern Civil, Stations and Tunnel: RFQ to be issued in 2022

In addition to the three main P3 contracts, there will also be a series of early works projects for bridge, track and other preparatory activities to help advance the delivery of the Ontario Line. Early works will occur along the joint rail corridor where the Ontario Line will operate next to existing GO Transit rail services. These contracts will be procured traditionally by Metrolinx and/or Infrastructure Ontario.


The current scope of work includes:

  • 15.6 kilometres of rapid transit between Exhibition/Ontario Place and the Ontario Science Centre
  • A combination of tunneled and elevated sections with 15 stations
  • A maintenance and storage facility for the subway vehicles
  • Transit connections to GO train service (Lakeshore East and West), Toronto Transit Commission's (TTC) Line 1 and Line 2 subway lines, the Eglinton Crosstown LRT, and the TTC's  King, Queen, Bathurst, Spadina, Harbourfront and Gerrard streetcar lines

Project Benefits

  • Faster, more frequent and reliable access to rapid transit with more than 255,000 people will live within a 10-minute walk of an Ontario Line station
  • Improve the quality of life for commuters by reducing daily travel time
  • Reduce crowding on the existing Line 1 (Yonge-University) subway
  • Up to 57,000 more jobs accessible by transit (in 45 minutes or less) for Toronto residents
  • Economic and community growth along the future transit line and thousands of job opportunities annually during construction
  • Reduction in traffic congestion, greenhouse gases and fuel consumption by providing an alternative transportation option

Terms of Use

These project documents are being made available on this website for informational purposes only. Neither Infrastructure Ontario nor Metrolinx makes any representation or warranty regarding the accuracy or completeness of the content or form of these documents. 

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.