> Yonge North Subway Extension | Metrolinx Engage

Yonge North Subway Extension

Yonge North Subway Extension

Updates & News

July 16, 2021 | Clark Station confirmed as fourth stop on Yonge North Subway Extension

A new station in Thornhill will be included as the fourth stop on the Yonge North Subway Extension. Clark Station will join Steeles, Bridge and High Tech stations to serve growing neighbourhoods along the Yonge Street corridor and beyond.

Learn more about Clark Station and what makes it the right fit for the project. →

Project Overview


This map of the Yonge North Subway Extension shows the route traveling beneath Yonge Street from the existing Finch Station before the alignment curves away from Yonge to emerge at the surface at the proposed subway tunnel portal south of Langstaff Road at the CN railway corridor. The path travels north within the CN railway corridor under the Highway 7 and Highway 407 overpasses on its approach to the area identified as Richmond Hill Centre. Stations at Steeles Avenue, High Tech Road, and the Highway 7/Highway 407 corridor are moving forward. Metrolinx is working with partners to determine which potential fourth station would best complement the benefits of the project. The locations planners are looking at are in line with the previously proposed stations at Cummer Avenue, Clark Avenue, and Royal Orchard Boulevard.


The proposed Yonge North Subway Extension will transform the commute in York Region, North York and beyond by extending the TTC’s Line 1 service north from Finch Station to Vaughan, Markham and Richmond Hill.

The latest plans propose four stations along an extension of roughly 8 kilometres. Transit hubs would be located at Steeles Avenue and within the Highway 7/Highway 407 corridor (“Bridge Station”). A station at High Tech Road would serve future communities envisioned within the Richmond Hill Centre area. Clark Station will offer riders seamless connections to the planned extension of the Viva Orange bus rapid transit line, which serves communities along Highway 7.

Key Facts

Proposed stations


Proposed connections to other transit options

Up to 7

  • Richmond Hill GO train service
  • Highway 407 GO bus service
  • York Region Viva Highway 7 bus rapid transit
  • York Region Viva Yonge Street bus rapid transit
  • Future Highway 407 Transitway service
  • Future TTC Steeles Avenue rapid transit service
  • Local York Region and TTC bus service

Route length

8 km


94,100 daily boardings

Improved access to transit

26,000 more people living within walking distance to a station

Improved access to jobs

22,900 employees within walking distance to a station

Morning rush hour reductions in traffic congestion

7,700 km in vehicle kilometres traveled

Yearly reductions in greenhouse gas emissions

4,800 tonnes

* The number and location of stations included in the final project is subject to change based on further analysis and exploration.