Scarborough Subway Extension

Rank 2022


Image Credit: Metrolinx

Industry Sector: Transit

Project Type: Subway

Project Value: $5.5 billion

Funding Source: P3

Province: Ontario

City / Region: Scarborough

Estimated End Date of Substantial Completion: 2026

The Scarborough Subway Extension is a 7.8 kilometre extension of TTC’s Line 2 Bloor-Danforth Subway, from the existing Kennedy Station northeast to McCowan Road/Sheppard Avenue. The line will include three new stations at Lawrence Avenue and McCowan Road, Scarborough Centre and a terminal station at McCowan Road and Sheppard Avenue. The project is being delivered in main packages of work: the Advance Tunnel project awarded in May 2021 to Strabag and the Stations, Rail and Systems (SRS) package. Construction for the Scarborough Subway Extension began in the fall of 2021at the corner of Sheppard Avenue and McCowan Road as crews excavated for the launch shaft where the tunnel boring machine will go into the ground to start digging. The shaft will be about 80 metres long, 30 metres wide, and 25 metres deep. For comparison, a standard Olympic-sized swimming pool is about 50 metres long, 25 metres wide, and 2 metres deep.

Project Owner: Metrolinx

Engineer: OneT+ (Gannett Fleming, IBI Group, GHD)

Contractor: Hatch (tunnel design); WSP (systems design and management); AECOM (station design); Environmental Services: WSP (environmental lead)

P3 Team Members/Project Team: DBF Team (Advance Tunnel contract): Strabag Scarborough Project Inc. • Construction Team: Strabag Inc. • Design Team: ARUP Canada Inc., Brian Isherwood & Associates Ltd. • Financial Advisor: Strabag Inc.

Environmental Services: WSP

Other Key Players: GHD (geotechnical studies); Golder- a member of WSP (owner’s consultant); Jacobs (quality mgmt. and risk assessment); Stantec (cost consultant); Comtech WSP (Metrolinx Owner’s Representative); INFRATA (managing consultant)

Road or Transit Length (km): 7.8

2022 Rank: 14

2021 Rank: 21

2020 Rank: 20

2019 Rank: 19

2018 Rank: 16

2017 Rank: 15

2016 Rank: 11

2015 Rank: 11

2014 Rank: 13


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