The Yonge North Subway Extension (YNSE) will extend Line 1 (Yonge-University) roughly eight kilometres from Finch Station through to Markham, Vaughan and Richmond Hill.
For more information about the project, or to find information about public engagements, please visit Metrolinx's Yonge North Subway Extension project page.
The Yonge North Subway Extension will bring Line 1 north from Finch Station into York Region, adding approximately eight kilometres of new subway service with stations at Steeles, Clark, Royal Orchard, Bridge and High Tech.
The extension will make it faster and easier for people to travel between Toronto and York Region by connecting with the Richmond Hill GO Train line, regional GO and Viva bus services, and local York Region Transit and TTC bus routes.
The project is being delivered through two major contracts: one contract for tunnelling and another for the stations, track, and support systems. Tunnelling will be delivered by the North End Connectors consortium, and procurement for the stations, rail and systems contract is underway.
Metrolinx is moving forward with detailed design and community engagement for the project, building on the Initial Business Case shared in 2021.
Following a competitive process, the North End Connectors consortium was awarded the Advance Tunnel contract in August 2025 to design and build 6.3 kilometres of twin tunnels between Finch Station and just south of the future Bridge Station. The work includes tunnel boring machine operations, launch and extraction shafts, and support structures for future stations and emergency exit buildings.
Procurement is underway for the other major package of work for the project, the Stations, Rail and Systems (SRS) contract, which includes design and construction of stations, tracks, and support systems. A Request for Qualifications was issued in 2025, and Infrastructure Ontario and Metrolinx issued a Request for Proposals to shortlisted teams in June 2026.
Earlier upgrades at Finch Station, completed by Black & McDonald Limited, helped prepare the station for future tunnelling work and integration with the subway extension. Utility relocations and other early works activities are also underway along the corridor.
Metrolinx continues to host engagement events and provide project updates to residents, businesses and stakeholders as construction, design and procurement activities progress on the Yonge North Subway Extension.