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City closes Gardiner Expressway, GO buses detour,
this weekend, May 21, 22, 23



The City of Toronto is closing

  • all lanes of the Frederick G. Gardiner Expressway between the Humber River and Carlaw Avenue

from 2 a.m. Saturday, May 21 until 8 a.m. Victoria Day, Monday, May 23 for the annual spring maintenance of the highway and bridge infrastructure.

GO Transit is likely detouring some buses operating to and from the Union Station GO Bus Terminal along Lake Shore Boulevard, instead of the Gardiner. However, buses serve all regular stops.


This post describes how GO has detoured buses on other occasions when the City has closed the Gardiner. However, GO Transit Control monitors road conditions and may direct bus drivers to detour along other streets, depending on traffic flow.

31 Guelph / Georgetown / Brampton - Union
18B / C Hamilton - Union early-morning / late-night
16 Hamilton - Union express via QEW
21 Milton / Mississauga - Union

From 2 a.m. on Saturday, May 21 until 8 a.m. on Victoria Day, Monday, May 23, eastbound buses operate along their regular route to the Gardiner Expressway and Lake Shore Boulevard West (at the Humber River), then detour:

eastward along Lake Shore and Harbour Street; and then
northward along Bay Street to the Union Station GO Bus Terminal,
ending their trips.

Westbound buses start their trips at the Union Station GO Bus Terminal, as usual, then proceed:

southward along Yonge Street; and then
westward along Lake Shore Boulevard West to the Humber River,
resuming their regular routes westward along the Gardiner Expressway.

90B Newcastle - Union
65 Newmarket - Barrie
90C Oshawa - Union early-morning

From 2 a.m. on Saturday, May 21 until 8 a.m. on Victoria Day, Monday, May 23, westbound buses operate along their regular route to the Don Valley Parkway and Lake Shore Boulevard East, then proceed:

westward along Lake Shore;
southward along Yonge Street;
westward along Queens Quay West; and then
northward along Bay Street to the Union Station GO Bus Terminal,
ending their trips.

Eastbound buses operate along their regular route to Yonge Street and Lake Shore Boulevard, then detour:

eastward along Lake Shore;
northward along Lower Jarvis Street;
eastward along Lake Shore Boulevard; and then
northward along Don Roadway to the Don Valley Parkway,
resuming their regular route northward along the Parkway.

71 Uxbridge / Stouffville / Markham - Union

From 2 a.m. on Saturday, May 21 until 8 a.m. on Victoria Day, Monday, May 23, westbound buses operate along their regular route to the Don Valley Parkway and Lake Shore Boulevard East, then proceed:

westward along Lake Shore;
southward along Yonge Street;
westward along Queens Quay West; and then
northward along Bay Street to the Union Station GO Bus Terminal,
ending their trips.

Eastbound buses operate along their regular route to Yonge Street and Lake Shore Boulevard, then detour:

eastward along Lake Shore;
northward along Lower Jarvis Street;
eastward along Lake Shore Boulevard; and then
northward along Don Roadway to the Don Valley Parkway,
resuming their regular route northward along the Parkway.


The City is closing the expressway so that work crews can perform the regular spring maintenance of the roadway, including:

  • continuing work to rehabilitate the Jameson Avenue bridges across the expressway;
  • repairing the bases of light poles;
  • cleaning catch basins to make sure they drain properly;
  • marking pavement and maintaining signs;
  • repairing guard rails;
  • inspecting and repairing overhead signs;
  • maintaining closed-circuit television cameras;
  • installing RESCU traffic-management system vehicle detectors and
  • sweeping and removing litter.