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GO Rail Expansion - Stouffville Corridor

Greater Toronto Area
Project Type:
DBF - Design Build Finance
Infrastructure Type:
Contract Value:
$254.5 million
Estimated Value for Money:
$50.4 million

About the Project

On the Stouffville corridor, infrastructure upgrades are currently required to three GO Stations, as well as a new grade separation at Steeles Avenue along the rail corridor. 

GO Rail Expansion will transform the transportation network in the Greater Toronto and Hamilton Area over the next decade. Metrolinx will transform the GO Transit rail network into a system that will deliver two-way, all-day service every 15 minutes over core segments of the GO Rail network. System-wide infrastructure upgrades will include: adding tracks, expanding stations, electrification of the rail network, new locomotives and train control systems to enable more frequent service.


  • Request for Qualifications
    Jul 06, 2016
  • Short-list Bidders Selected
    Sep 16, 2016
  • Request for Proposals
    Sep 16, 2016
  • Winning Bidder Selected
    Mar 07, 2018
  • Construction Begins
    Mar 07, 2018
  • Construction Ends
    Sep 15, 2023

Latest News

Winning Bidder

EllisDon Transit Infrastructure: (Applicant Lead) EllisDon Capital Inc.; (Construction) EllisDon Civil Ltd.; (Design) WSP / MMM; (Financial Advisor) EllisDon Capital Inc. 


The scope of work includes:

  • Milliken Station: new and relocated platforms with canopy enclosure, tunnels, elevators, Steeles Avenue pedestrian connection, customer amenities
  • Agincourt Station: new second track, new and relocated platforms with canopy enclosure, tunnels, elevators, customer waiting areas, building relocation, customer amenities provisions
  • Unionville Station: new second track and turning track, new and relocated platforms with canopy enclosure, tunnels, elevators, parking expansion, customer amenities

Community And Green Benefits

  • Reduced traffic congestion, greenhouse gases and fuel consumption
  • Improved quality of life for commuters by reducing daily travel time

Economic Benefits

Design and construction of the project will generate employment opportunities, produce significant benefits for commuters.

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.