Scarborough Subway Extension update – Three teams shortlisted for contract to build stations

Metrolinx and Infrastructure Ontario have reached another important milestone for the Scarborough Subway Extension  – three teams have been shortlisted to submit their proposals for how they will design and build the stations, lay down the tracks, and install the technology that will connect the extension to the Line 2 subway. Keep reading to find out more about the three teams.

One of Toronto’s new subway projects is taking another step forward.  

Today, (Feb. 9) Metrolinx and Infrastructure Ontario issued a Request for Proposals (RFP) to the three teams shortlisted to bid on the 7.8-kilometre Scarborough Subway Extension.

These teams responded to the project’s Request for Qualifications (RFQ) last fall to express their interest in building the three new stations and all the other work that will be required to get the subway extension up and running.

The route map for the Scarborough Subway Extension project
The route map for the Scarborough Subway Extension project. (Metrolinx image)

These are the three teams shortlisted by Metrolinx and Infrastructure Ontario:


  • Applicant lead: Dragados Canada, Inc.
  • Design prime team member: AECOM Canada, Ltd.
  • Construction prime team member: Dragados Canada, Inc.

KSX Integrated Design-Builders

  • Applicant leads: Peter Kiewit Sons ULC, SNC-Lavalin Constructors (Pacific) Inc.
  • Design prime team members: Peter Kiewit Sons ULC, SNC-Lavalin Constructors (Pacific) Inc.
  • Construction prime team members: Peter Kiewit Sons ULC, SNC-Lavalin Constructors (Pacific) Inc.

Scarborough Transit Connect

  • Applicant leads: Aecon Infrastructure Management Inc., FCC Construccion S.A.
  • Design prime team member: Mott MacDonald Canada Limited
  • Construction prime team members: Aecon Infrastructure Management Inc., FCC Construccion S.A.

These groups will have until the summer to submit their plans to Metrolinx and Infrastructure Ontario for evaluation.

“We are delighted to invite these experienced teams to prepare their proposals to design and build the stations and deliver all the other remaining work for this important project,” said Jenny Matharu, Metrolinx program sponsor for the Scarborough Subway Extension.

“This milestone brings us another step closer to delivering modern, reliable transit for customers in Scarborough and across the region.”

The tunnel boring machine at the factory in Germany
The tunnel boring machine at the factory in Germany. (Strabag photo)

More transit benefits for more of Scarborough

With three new stations across nearly eight kilometres of new subway tracks, the Scarborough Subway Extension will bring convenient, modern transit further into Scarborough.

“The new extension will put 38,000 more people within a 10-minute walk from the three new subway stations,” said Matharu.

Customers can also look forward to not having to transfer at Kennedy when the new extension is in operation. However, Kennedy station will feature a direct connection to the Eglinton Crosstown LRT for those interested in travelling across midtown Toronto and eventually to the airport when the Eglinton Crosstown West Extension is in operation.

All three Scarborough Subway Extension stations will have bus terminals with connections to local TTC services. Some stations like Scarborough Centre will even have connections to regional services like GO bus services and the proposed Durham-Scarborough Bus Rapid Transit line. These surface routes will create a network of connections branching out from the extension, making it convenient for customers around Scarborough to connect to and from the Line 2 subway.

“These stations are being designed with the community in mind,” said Matharu. “We are designing them to be more than just subway stops — we want to maximize transit connections for future customers at each station.”

Aerial view of excavation and TBM assembly at the Scarborough Subway Extension launch shaft site
Aerial view of excavation and tunnel boring machine assembly at the Scarborough Subway Extension launch shaft site. (Strabag photo)

Tunnelling construction is already underway

To deliver the project as quickly as possible, Metrolinx and Infrastructure Ontario split it into two contracts – the advanced tunnel contract and the stations, rail, and systems contract.

Metrolinx and Infrastructure Ontario awarded the tunnelling contract for the project to STRABAG in May 2021. Since then, a lot of work has been underway at the launch shaft site, located at Sheppard and McCowan, to prepare for tunnelling that’s set to begin later this year.

Last month, the project’s tunnel boring machine (TBM), named Diggy Scardust by the community, arrived at the launch shaft site from Germany and is now being assembled.

For the latest project updates and to sign up to the project newsletter, visit project webpage or follow the project on Twitter.

Story by Joshua Patel, Metrolinx Senior Advisor, Subway Program