Toronto Line 2 extension: Sener to lead detailed design for Scarborough link

The new section of Toronto’s Line 2 is expected to be used by 105,000 passengers daily. Image: Sener

The new extension has a total length of 7.8km and runs entirely underground. It includes three new underground stations, each featuring surface-level bus terminals to facilitate modal interchange.

Additionally, the project involves upgrading an existing station, eight new emergency exits, and four electrical substations.

As the lead engineering firm in the implementation phase of the stations, track and systems contract, Sener will develop the detailed design for the architecture, structures and electromechanical installations, as well as for the geotechnics and station caverns, ventilation systems, electrification, signalling and train control, communications and track, landscaping, and utilities.

The new section is expected to be used by 105,000 passengers daily, of whom 52,000 will be new subway users, which will reduce greenhouse gas emissions by up to 10,000 tonnes annually.

The Scarborough Subway Extension is a continuation of the existing Line 2 (Bloor-Danforth). Construction began in 2011 and was initially expected to be completed in 2024, but has faced delays. The extension is a key part of the broader Ontario Line project, which includes other significant subway expansions.