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GO Rail Expansion – Davenport Diamond Rail Grade Separation

Greater Toronto Area
Project Type:
DBF - Design Build Finance
Infrastructure Type:
Contract Value:
$175 million
Estimated Value for Money:
$35.1 million

About the Project

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
    Aug 17, 2017
  • Short-list Bidders Selected
    Dec 15, 2017
  • Request for Proposals
    Feb 28, 2018
  • Winning Bidder Selected
    Jul 25, 2019
  • Construction Begins
    Apr 15, 2020
  • Construction Ends

Latest News


To help increase capacity on the Barrie Corridor, work is required at the Davenport Diamond, which includes:

  • Construction of a rail grade separation structure between north-south GO Barrie Rail corridor and east-west CP Rail corridor
  • Erection of retaining walls forming the approaches of the grade separation structure topped with noise reduction walls to minimize impacts on the community
  • Construction of a temporary diversion track to enable construction of a new two-track elevated guideway
  • Modification of an existing at-grade crossing at Wallace Avenue to become a road under rail grade separation
  • Replacement of Bloor Street West Bridge

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.