Scarborough Subway Extension

Extending Line 2 subway service 7.8 km farther into the heart of Scarborough.

Tunnel extraction shaft

The extraction shaft is where Diggy Scardust, the tunnel boring machine (TBM) will end its journey. The site is located at Eglinton and Midland Avenues and will be converted into the tunnel connection to existing Line 2 infrastructure at Kennedy Station.

Work began on the extraction shaft in 2024 and was completed in the summer of 2025.

Diggy is currently tunnelling 6.9-kilometres of the 7.8-kilometre project.

Images

A birds-eye view of the tunnel boring machine extraction shaft at Eglinton and Midland Avenues.

Crews excavating and installing tiebacks in the extraction shaft.

Construction timeline

Site clearing
October 2021
Excavation
April 2024
Completed
June 2025

Local construction

Click the icons on the map for the latest notices and other information related to the station.

Community updates

ProjectsToronto subway projects: 2025 highlights

There’s been no shortage of progress and milestones reached across our various subway projects this year.

ProjectsSpring 2026 community open houses

Metrolinx hosted community open houses to provide project updates and to seek your input on the names of your future Scarborough subway stations.

A construction site with various machinery.

NewsModernizing Kennedy Station

Adapting infrastructure at a key transit hub to extend Line 2 subway service.

Get in touch

We're committed to keeping you informed and engaged every step of the way as we build the Scarborough Subway Extension.

Our team is here to answer your questions, address issues, and provide the information you need. Reach out to us any time at ScarboroughSubwayExtension@metrolinx.com or via our 24/7 phone line: 416-202-7900.