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Gardiner Expressway construction affects GO bus services, starting March 25; The project may also affect TTC streetcars



View of the Gardiner looking eastward from Dufferin toward Strachan.jpg

^ View of the Gardiner Expressway, looking eastward from Dufferin Street toward Strachan Avenue. Image, City of Toronto.

Starting Monday, March 25, the City of Toronto starts the first phase of its project to fully replace the concrete deck and steel girders

  • on the Frederick G. Gardiner Expressway between Dufferin Street and Strachan Avenue.

During this phase of construction, the work zone may restrict the expressway to just two lanes in each direction:

  • From Monday, March 25 until Sunday, April 14: the City is closing one lane (either east- or westbound) for pre-construction work and may intermittently close a second lane overnight, when necessary. When the City closes the eastbound lane, it’s also closing the eastbound on-ramp from Lake Shore Boulevard West east of Jameson Avenue to accommodate this work.
  • From Good Friday, Friday, March 29 until Easter, Sunday, March 31: All lanes will be open.
  • From Saturday, April 6 until 11:59 p.m. Monday, April 8: All lanes will be open.
  • From mid-April until mid-2027: The City will reduce the expressway to just two lanes in each direction between Dufferin and Strachan and may intermittently close more lanes, when necessary. It will also close the eastbound on-ramp from Lake Shore West east of Jameson Avenue.

Map-of-work-area - Gardinter from Dufferin to Strachan.png

^ Map of work area. Image, City of Toronto.

Closing traffic lanes on the expressway directly impacts GO Transit bus service. Passengers aboard buses along these routes can expect detours or delays:

  • 16 Hamilton / Toronto express;
  • 18 Lakeshore West late-night / early-morning;
  • 21 Milton / Mississauga / Toronto; and
  • 31 Guelph / Georgetown / Toronto.

GO Transit Control will monitor traffic conditions and advise GO drivers about the best route to reach their destinations.

From May until the end of July, 2026, the Expressway will be fully open with no lane restrictions to accommodate extra traffic during the FIFA World Cup.


Construction takes place primarily from 7 a.m. until 11 p.m. Mondays to Saturdays, with crews occasionally working from 9 a.m. until 5 p.m. Sundays. Scheduling may vary based on the nature of the work.

During overnight hours, crews engage in various activities, including shifting traffic barriers between work stages and delivering materials. When structure work occurs over Exhibition GO Station, overnight construction work will occur when the station is open to passengers to minimize impacts to transit users along GO’s 01 Lakeshore West line.

When structural work occurs over the TTC’s Exhibition Loop, the TTC will replace street cars with shuttle buses to provide continuous transit access to the loop along the 509 Harbourfront and 511 Bathurst routes. The project team is working collaboratively with the TTC and the contractor to explore construction methods to reduce the timeline for disrupting TTC services.

Crews will maintain pedestrian access on Manitoba Drive and through the Exhibition GO Station connecting Atlantic Avenue to Manitoba Drive during the project, but may also intermittently close access when necessary intermittent closures to allow for overhead work. This will when passengers are not using Exhibition GO Station — typically from 30 minutes after the last GO Train leaves the station and as long as until 30 minutes before the first GO train arrives.


This section of the Gardiner Expressway is nearing the end of its service life. This vital work is part of the Gardiner Expressway Strategic Rehabilitation Plan. The plan addresses the immediate and long-term rehabilitation needs of the entire expressway, from Highway 427 to the Don Valley Parkway, to make sure it remains in a safe and operable condition now and in the future.

The City expects to complete this phase of the project “in mid-2027”, meaning construction continues as late as until August 31, 2027.