Infrastructure Ontario (IO) and Metrolinx have issued a Request for Proposals (RFP) to three shortlisted teams to design, build, and finance the Davenport Diamond Rail Grade Separation project. This project is part of the GO Regional Express Rail (RER) program.

“The Davenport Diamond project will be an exciting addition to the community, with a new greenway park, an extension of the West Toronto Railpath, and integrated international-calibre artwork,”  As part of our GO Transit Expansion program, customers will enjoy more and better GO services, less road traffic and more safety.”

The shortlisted teams—Davenport Construction Partners, Graham Commuter Rail Solution, and Steelhead—were selected based on criteria identified in the Request for Qualifications process. Criteria included design and construction experience, and the financial capacity to deliver a project of this size and complexity.

The teams are:

Davenport Construction Partners

  • Applicant Lead: Dragados Canada, Inc., Bot Infrastructure Ltd.
  • Construction Team: Dragados Canada, Inc., Bot Infrastructure Ltd., Black & McDonald
  • Design Team: COWI North American Ltd. (Design Lead), IBI Group Professional Services (Canada) Inc., Dissing+Weitling, Peto MacCallum Ltd., SENER SES Canada Inc.
  • Financial Advisor: ACS Infrastructure Canada Inc., National Bank Financial Inc.

Graham Commuter Rail Solution

  • Applicant Lead: Graham Capital Partners LP, Graham Construction and Engineering LP
  • Construction Team: Graham Construction and Engineering LP
  • Design Team: LEA Consulting Ltd. (Design Lead), exp Services Inc., International Bridge Technologies, Brown & Storey Architects Inc.
  • Financial Advisor: Graham Capital Partners LP


  • Applicant Lead: Dufferin Construction Company (a division of CRH Canada Group Inc.), Aecon Infrastructure Management Inc. (a subsidiary of Aecon Group Inc.)
  • Construction Team: Dufferin Construction Company, Aecon Infrastructure Management Inc.
  • Design Team: Mott MacDonald Canada Limited (Design Lead), DTAH, Pedelta, Golder Associates Ltd., R.J. Burnside & Associates Limited
  • Financial Advisor: Bank of Nova Scotia
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The teams have been invited to respond to the RFP and will begin preparing proposals that detail how they will design, build, and finance the project. Once submissions are received, IO and Metrolinx will evaluate the proposals, select a preferred proponent and then negotiate a final contract. The successful proponent is expected to be announced in fall 2018. A fairness monitor is overseeing the entire procurement process.

Scope of work for the project 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;
  • Enhancements to the public realm, including artwork on the structure cladding and new pedestrian and cyclist routes; and
  • Provisions for future electrification implemented within upgraded rail infrastructure to accommodate future electrified GO train service.

The project is being delivered as a Design-Build-Finance contract using Infrastructure Ontario’s Alternative Financing and Procurement model.


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