The Yonge North Subway Extension (YNSE) will extend Line 1 (Yonge-University) roughly 8 kilometres from Finch Station through to Vaughan, Markham and Richmond Hill.

For more information about the project, please visit the Metrolinx Yonge North Subway Extension page or to find out information about past and future public engagement on the project, please visit Metrolinx Engage to Get Involved.


The Yonge North Subway Extension (YNSE) is an initiative under the Metrolinx-led Subway Program. The YNSE will extend Line 1 with five stations at Steeles, Bridge, High Tech, Clark, and Royal Orchard. The extension will connect to the Richmond Hill GO train and Highway 407 GO bus service, as well as local bus routes at every station. Metrolinx continues to undertake work to refine scope of the YNSE.

The YNSE project will be delivered through dedicated contracts for the Advance Tunnel portion of the project and for the Stations, Rail and Systems component of the project.

In March 2021, Metrolinx released an initial business case(IBC) for the project.


A map of a proposed alignment of the Young North Subway Extension project displaying the stations that will extend from Finch Station in Toronto into Richmond Hill.

The planned date to begin the main construction of the YNSE is late 2023. Metrolinx will update procurement and construction timelines as the project advances.

Metrolinx has held virtual in-person engagements events to provide the public with information on project benefits, route improvements, the property acquisition process, and other project details. For information on past and upcoming events visit Metrolinx Engage to Get Involved.