The TTC has published a Major Projects page for its Bloor-Yonge station expansion with a few renderings of the platform level views.

Many more illustrations were available on the TTC’s bid site, and this article is based on documents there which go into considerably more detail.

There are a lot of images here, and so I will leave most of the article beyond the “more” line.

Project Scope

The project involves the creation of a separate eastbound platform for Line 2 Bloor-Danforth and the reconfiguration of the existing centre platform as westbound only. Circulation space between Line 1 Yonge and Line 2 will be expanded substantially.

At the north end of Bloor Station, both platforms will be extended about one car length to the north (the existing Bloor crossover is located a short distance north of the station) to open up circulation space .

A new main entrance will be built within 2 Bloor Street East.

On the south side, at 81 Bloor East, an entrance will be added within a building whose primary purpose is to house a substation for electrical power to the expanded station. Traction power will continue to be supplied through the TTC’s Asquith Substation.

Four new fan plants will be added to bring the expanded station to modern fire code, and the existing fan plant at the south end of Bloor Station will be refurbished.

The drawings show no provision for Platform Edge Doors.

This will be a Design-Build project with the successful bidder responsible for taking TTC plans now at about 30% completion to a full 100% design, followed by construction. The Request for Proposals is expected to close later in 2023.

Construction is planned to begin in 2024Q2 with the new Line 2 eastbound platform and new areas of Line 1 platforms in service by 2029Q2. This assumes that the Yonge North Subway Extension to York Region will open in 2030. The project would close out in 2031.

Support for the project is in place from all levels of government, but until the bids come in, we will not know whether the full scope of work will fit within available funding of $1.5 billion.

The footprint of the expanded station will be considerable, and the drawing below gives an idea of how much more territory the station will occupy.

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