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No subway service, St Clair West to Union,
May 11, 12

Update — Sunday, May 12, 12:21 p.m.: Crews finished the project early. Full subway service has resumed.


This Saturday, May 11 and Sunday, May 12, the TTC is closing the Line 1 Yonge - University subway between St Clair West and Union stations, as crews continue installing the automated train-control (ATC) signal system. Line 1 subway trains operate only between Vaughan Metropolitan and Spadina stations and between Finch and Union stations this weekend.

Shuttle buses operate, stopping on the street near each station along the closed section of the line. Procedures for boarding and exiting from shuttle buses varies from station to station. TTC staff are available to help you find your way and answer your questions.

Most stations along this part of the line remain open to passengers so you can buy fares or access connecting buses, streetcars and subway trains. However, Museum and Dupont stations are closed.

In a news release, the TTC explains, “Portions of the TTC’s signal system date back to the 1950s when the subway first opened. When ATC is fully installed on Line 1, it will… [improve] capacity on the line. ATC is currently installed on 40% of Line 1, the portion between Vaughan Metropolitan Centre and Dupont stations, and, if all goes as planned this weekend, ATC will extend to St Patrick Station at the end of the closure. Customers travelling in the ATC area are already experiencing the increased reliability that comes with the modern signal system.”

The TTC says it’s also adding extra streetcars along the 510 Spadina and 512 St Clair routes to help passengers get around while part of the subway system is closed.

Wheel-Trans is available at each station along the closed section of the line throughout the weekend. You can speak with a TTC staff member to ask about the accessible service and its frequency.

According to the TTC news release, “When ATC is fully installed on Line 1, it will provide a more modern and reliable signal system that will help the TTC improve capacity by allowing for increased trips on the line. While the TTC does most subway maintenance at the conclusion of service each night, it continues to require weekend closures to complete critical infrastructure and ATC upgrades… [and] work on the Eglinton Crosstown” light rail transit project.

Full subway service along Line 1 resumes by 6 a.m. Monday, May 13.

The TTC has already closed this section of Line 1 several times earlier this year:

The TTC is planning to close parts of this section of Line 1 several more times more this year:

  • Saturday, May 25 and Sunday, May 26 - St Clair to Union - signal upgrades.
  • Saturday, June 8 and Sunday, June 9 - St Clair to Union - signal upgrades.
  • Monday, June 17 until Thursday, June 20 - early closure - Bloor to Union - signal upgrades.
  • Monday, June 24 until Thursday, June 27 - early closure - Bloor to Union - signal upgrades.
  • Saturday, August 10 and Sunday, August 11 - St George to King - signal upgrades.
  • Monday, September 23 until Thursday, September 26 - early closure - Bloor to St Andrew - signal upgrades.
  • Saturday, November 9 and Sunday, November 10 - St George to King - signal upgrades.
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