The TTC - York University Subway Station project involved the construction of a new underground subway station with the ability to accommodate approximately 40,000 customers a day and was constructed as part of the Toronto York Spadina Subway Extension (“TYSSE”) project which included six stations along a new 8.6 km subway alignment. In addition, the facility also serves local bus routes which circulate within York University and the greater TTC network. The multi-disciplinary project replaced bus service in the main area, and provides pedestrian access, both for existing and future facilities on campus.

The majority of the underground station elements were constructed with reinforced concrete and structural steel. The main station concourse roof slab was cast in a waffle shape pattern and is supported at nine locations by a pair of 4 m long steel V-columns encased in concrete; each weighing more than 100,000 kgs. Further, all the glazing on the structure is bird-friendly fritted glass in painted steel curtain wall framing.

Once the structural foundations were complete, utilities were relocated, and the new station was connected to site services. EllisDon also constructed a skylight “lightwell” in the station entrance which provides increased natural light within the station. In addition, permeable concrete pavers were installed to construct a drainage system under the station that diverts storm water below ground as opposed to creating surface runoff.