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Stouffville Grade Separations TPAP

Stouffville Grade Separations TPAP

Environmental Assessments and Addendums under the Transit Project Assessment Process

To support the GO Expansion program, Metrolinx has identified various infrastructure requirements including track and switches, layovers, and electrification to achieve established service level targets across the network. New infrastructure involves carrying out Environmental Assessments (EA) and EA Addendums under the Transit Project Assessment Process (TPAP) (Ontario Regulation 231/08).

The purpose of the project is to accommodate the expansion of the Stouffville rail line through grade separations or road closure at seven crossings. These improvements will reduce traffic conflicts and enhance safety. The project will facilitate the GO expansion program, including the construction of the previously approved new track. To support GO Expansion along the Stouffville Corridor, the following crossings will be closed or grade separated:

  • Denison Street and Kennedy Road in City of Markham; and
  • Passmore Avenue, McNicoll Avenue, Huntingwood Drive, Havendale Road and Progress Avenue in City of Toronto.
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What’s a Transit Project Assessment Process (TPAP)?

A TPAP is an environmental assessment that studies the environmental impacts or effects of transit projects, and provides proposed mitigation. This streamlined approach helps to protect the environment, and allows for feedback through regular consultation with communities and stakeholders. The process involves a pre-consultation phase followed by a regulated 120-day phase where the environmental effects of the project are analyzed. 

About GO Expansion

To get people moving we are actively building and upgrading existing GO Rail stations, adding new track, building and opening new maintenance and storage facilities, expanding and revitalizing bridges around our region and improving pedestrian connections. Learn more about the GO Expansion program where you can also review the GO Expansion Business Case.

Investing in our future

Year after year, train by train, bus by bus, Metrolinx has committed to constantly improving transit for people living in in the Greater Golden Horseshoe. Now, that work is taking on a whole new energy. Thanks to a huge investment in infrastructure, Metrolinx is working to quadruple GO Rail service and improve customer experiences.