Toronto-York Spadina subway extension

  • Two subway stations designed by Arup teams.
  • Low-energy and sustainable features, with integrated design and method to minimise disruption during construction.
  • 8.6km line will include tunnelled and cut-and-cover sections and six stations.

As prime consultant, Arup was contracted to design York University (YU) and Vaughan Metropolitan Centre (VMC) stations, two of six added for the Toronto-York Spadina subway extension.

Both stations are compliant with the Toronto Green Standard, achieving energy performances over 25% better than building code.

Sustainability initiatives at VMC include a cool roof for the entrance building with an X-bridge structure at street level to maximise natural light and a green roof for the traction substation. At YU, a south-facing amphitheatre extends to concourse level, inviting daylight into the station.

Both stations incorporated measures to reduce spoil removal, re-use water within the limitations of the Toronto Transit Commission (TTC) standards and limit requirements for artificial heating, ventilation and air conditioning.

York University Station

The iconic YU Station will service 40,000 commuters daily and replace an existing surface bus system. The station is located beneath a landscaped area, wedged tightly between two existing buildings, one requiring compensation grouting to control damage from tunnelling and excavation settlement.

Arup’s global experience with excavations in soft ground produced options for excavation support and dewatering to overcome the challenges of water-bearing ground.

Vaughan Metropolitan Centre Station

VMC Station incorporates subsurface regional transit interchanges and allows for continued development in the surrounding area. Arup provided complex construction planning and staging solutions in 4D – ensuring the regional highway could operate throughout construction and assisting with tunnel boring machine extraction.

Cost and value engineering

Cost and value engineering studies by Arup led to the use of high-grade reinforcement produced in Canada but not previously used by TTC.

Arup assisted the client in achieving other cost-effective solutions through changes to design criteria generated from lessons learned on previous transit projects. Some of these solutions were introduced across all six stations, resulting in savings across the line.

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  • Exterior of Vaughan Corporate Centre Station. Credit Grimshaw Architects/Adamson Associates.Open gallery

    Arup was contracted to design York University (YU) and Vaughan Metropolitan Centre (VMC) stations.

  • Interior of Vaughan Corporate Centre Station. Credit Grimshaw Architects/Adamson Associates.Open gallery

    Arup provided complex construction planning and 4D staging solutions for VMC station.