Regional Express Rail – Davenport Diamond Rail Grade Separation

Greater Toronto Area
Project Type:
DBF - Design Build Finance
Infrastructure Type:
Contract Value:
To be announced at Financial Close
Estimated Value for Money:
To be announced at Financial Close

About the Project:

Announced in 2014 by the Province of Ontario, RER will transform the Greater Toronto and Hamilton Area over the next decade. Metrolinx will transform the GO rail network into an RER system that will bring 15-minute, two-way, all-day, electrified GO service to communities across the region. System-wide RER 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:
  • Construction Begins:
  • Construction Ends:


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

  • construction of a grade separation structure between the north/south GO Rail corridor and east/west CP Rail corridor to minimize delays to GO service
  • implementation of a pedestrian underpass to restore east/west connection at Paton Road
  • erection of retaining walls forming the approaches of the grade separation structure, topped with noise barrier walls and superimposed cladding to minimize impacts on the community
  • construction of a rail guideway offset within the corridor during construction to accommodate a temporary diversion track and a temporary rail diamond
  • modification of an existing at-grade road crossing at Wallace Avenue to become a road under rail grade separation
  • public realm enhancements, including artwork on the structure cladding and new pedestrian and cyclist routes
  • provisions for future electrification implemented within upgraded rail infrastructure to accommodate future electrified GO train service

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.