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City closes Don Valley Parkway for seasonal maintenance;
GO buses detour this weekend, September 17 and 18



The City of Toronto is closing

  • the Don Valley Parkway between Highway 401 and the Frederick G. Gardiner Expressway

from 2 a.m. on Saturday, September 17 until 5 a.m. on Monday, September 19 to conduct its annual spring maintenance.

Closing the Parkway affects bus service along GO Transit’s 65 Newmarket - Union, 71 Uxbridge / Stouffville - Union, 90B Oshawa - Union and 90C Newcastle - Union routes. Although the buses serve all regular stops, passengers should expect some delays in service.

(Although GO has not confirmed this information, this post describes how it usually detours buses when the Parkway is closed. However, GO Transit control may further detour the buses, depending on traffic.)


90C Newcastle - Union

The eastbound buses that leave Union Station at 6:20 a.m. on Saturday, September 17 and Sunday, September 18 and at 1:20 a.m. on Sunday, September 18 and Monday, September 19 likely operate:

southward along Yonge Street;
westward along Lake Shore Boulevard West;
northward along York Street, University Avenue, Queen’s Park Crescent East, Queen’s Park and Avenue Road;
eastward along Lonsdale Road;
northward along Oriole Parkway;
westward along Oxton Avenue;
northward along Avenue Road; and then
eastward along Highway 401 to the Don Valley Parkway,
resuming their regular route eastward along Highway 401.

65 Newmarket - Union

From 2 a.m. Saturday, September 17 until 5 a.m. Monday, September 19, southbound buses operate along their regular route to Highways 404 and 401, then proceed:

westward along Highway 401;
southward along Leslie Street;
eastward along Eglinton Avenue East;
southward along Mount Pleasant Road, Jarvis and Lower Jarvis Streets;
westward along Lake Shore Boulevards East and West to Bay Street; and then
northward along Bay Street to the Union Station GO Bus Terminal.

Northbound buses start their trips at the Union Station bus terminal, then proceed:

southward along Yonge Street;
eastward along Queens Quay East
northward along Lower Jarvis and Jarvis Streets and Mount Pleasant Road;
eastward along Eglinton Avenue East;
northward along Leslie Street; and then
eastward along Highway 401 to the Don Valley Parkway / Highway 404,
resuming their regular route northward along Highway 404.

90B Oshawa - Union

The westbound buses leaving Oshawa GO Station at 4:40 a.m. Saturday, September 17, Sunday, September 18 and Monday, September 19 and 5:40 a.m. Saturday, September 17 and Sunday, September 18 likely operate along their regular route to Highway 401 and the Don Valley Parkway / Highway 404, then detour:

westward along Highway 401;
southward along Leslie Street;
eastward along Eglinton Avenue East;
southward along Mount Pleasant Road, Jarvis and Lower Jarvis Streets;
westward along Lake Shore Boulevards East and West to Bay Street; and then
northward along Bay Street to the Union Station GO Bus Terminal.

71 Uxbridge / Stouffville - Union

From 2 a.m. Saturday, September 17 until 5 a.m. Monday, September 19, southbound buses operate along their regular route to Highways 404 and 401, then proceed:

westward along Highway 401;
southward along Leslie Street;
eastward along Eglinton Avenue East;
southward along Mount Pleasant Road, Jarvis and Lower Jarvis Streets;
westward along Lake Shore Boulevards East and West to Bay Street; and then
northward along Bay Street to the Union Station GO Bus Terminal.

Northbound buses start their trips at the Union Station bus terminal, then proceed:

southward along Yonge Street;
eastward along Queens Quay East
northward along Lower Jarvis and Jarvis Streets and Mount Pleasant Road;
eastward along Eglinton Avenue East;
northward along Leslie Street; and then
eastward along Highway 401 to the Don Valley Parkway / Highway 404,
resuming their regular route northward along Highway 404.


While the Parkway is closed, City work crews will:

  • stabilize the slope between Beechwood Drive and Pottery Road;
  • remove and replace a steel beam guard rail;
  • replace precast subway beams on the lower deck of the Prince Edward (Bloor Street) Viaduct;
  • evaluate the pavement;
  • clean catch basins to make sure they drain properly;
  • renew pavement markings and maintain signs;
  • maintain closed-circuit television cameras;
  • inspect and repair overhead signs;
  • repair RESCU vehicle detectors;
  • repair guard rails; and
  • sweep the roadways and remove litter.