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Park Road South Oshawa construction: DRT detours, starting July 13



The residents of South Oshawa probably feel that their area is increasingly inaccessible to the rest of the Oshawa due to several major construction projects that block roadways, including on:

Well, here’s another project that’s likely going to contribute to South Oshawans’ sense of isolation. Starting Monday, July 13, access to the south end of the city becomes even more difficult, as the Region of Durham is closing

  • Park Road South [Regional Road 54] between Cromwell Avenue and Bloor Street West

to accommodate Ontario Ministry of Transportation contractors who are widening Highway 401. The project requires the Ministry to demolish and rebuild the overpass that carries traffic on Park South over the highway.

Durham Region Transit is detouring buses along these routes, while the street is closed:

Due to the construction on Simcoe South, DRT was also detouring buses along these routes onto Park Road South:

Starting July 13, it further detours buses along these routes.

2026-07-13---Park-Rd-and-Cubert-St-Closure.png

Construction on Park Road South and the resulting DRT detours continue until further notice.


PULSE 901A

Starting Monday, July 13, southbound buses operate along their regular path to Centre Street South and Gibb Street, then detour:

westward along Gibb;
southward along Stevenson Road South; and then
eastward along Bloor Street West to Simcoe Street South,
resuming their regular path southward along Simcoe South.

Southbound buses skip their regular stops

  • on Simcoe Street South beyond Royal Street, at Mill Street, across from First Avenue and at Bloor Street West.

Southbound buses also skip their temporary detour-path stops

  • on Park Road South at Marland and Hillside avenues.

Instead, southbound buses drop off or pick up passengers at ongoing temporary stops

  • on Gibb Street at Nassau and Montrave streets, beyond Grenfell Street and beside #450 Gibb,
  • on Stevenson Road South beyond Gibb Street and at Laval Drive and
  • on Bloor Street West at Park Road South [west and east], beside #249 Bloor West, across from Oxford Street and at Simcoe Street South.

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Northbound buses operate along their regular path to Simcoe Street South and Bloor Street West, then detour:

westward along Bloor West;
northward along Stevenson Road South;
eastward along Gibb Street;
southward along Centre Street South; and then
eastward along Fairbanks Street to Simcoe South,
resuming their regular path northward along Simcoe.

Northbound buses skip their regular stops

  • on Simcoe Street South beyond Bloor Street East, at Albany Street and First Avenue and across from Royal Street.

Northbound buses also skip their temporary detour-path stops

  • on Park Road South beyond Montrave Avenue and at Quebec Street.

Instead, northbound buses drop off or pick up passengers at ongoing temporary stops

  • on Bloor Street West at Oxford Street, across from Park Road South [east] and at Park Road South [west] and
  • on Gibb Street across from the Oshawa Centre at Grenfell Street, Montrave Avenue, Nassau Street and Centre Street South.

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Route 403

Starting Monday, July 13, southbound buses start their trips in Oshawa Centre terminal, then proceed:

westward along Gibb Street;
southward along Stevenson Road South; and then
eastward along Bloor Street West to Park Road South [west],
resuming their regular path eastward along Bloor West.

Southbound buses skip their regular stops

  • on Gibb Street across from the Oshawa Centre and at Grenfell Street and Montrave Avenue and
  • on Park Road South at Marland and Hillside avenues.

Instead, southbound buses drop off or pick up passengers at temporary stops

  • on Stevenson Road South beyond Gibb Street and at Laval Drive.

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Northbound buses reverse the southbound detour path.

Northbound buses skip their regular stops

  • on Park Road South beyond Montrave Avenue and at Quebec Street and
  • on Gibb Street at Montrave Avenue, beyond Grenfell Street and beside #450 Gibb.

Instead, northbound buses drop off or pick up passengers at temporary stops

  • on Stevenson Road South at Laval Drive and Gibb Street and
  • on Gibb Street beyond Stevenson Road South.
Route 421A / 421C

Starting Monday, July 13, westbound buses operate along their regular path to Bloor Street West and Park Road South [west], then detour:

westward along Bloor West;
northward along Stevenson Road South;
westward along Gibb Street; and then
northward into Oshawa Centre terminal,
resuming their regular path.

Westbound buses skip their regular stops

  • on Park Road South beyond Montrave Avenue and at Quebec Street and
  • on Gibb Street at Montrave Avenue, beyond Grenfell Street and beside #450 Gibb.

Instead, westbound buses drop off or pick up passengers at temporary stops

  • on Stevenson Road South at Laval Drive and Gibb Street and
  • on Gibb Street beyond Stevenson Road South.

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Eastbound buses operate along their regular path to Oshawa Centre terminal, then detour:

westward along Gibb Street;
southward along Stevenson Road South; and then
eastward along Bloor Street West to Park Road South [west],
resuming their regular path eastward along Bloor West.

Eastbound buses skip their regular stops

  • on Gibb Street across from the Oshawa Centre and at Grenfell Street and Montrave Avenue and
  • on Park Road South at Marland and Hillside avenues.

Instead, southbound buses drop off or pick up passengers at temporary stops

  • on Stevenson Road South beyond Gibb Street and at Laval Drive.

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Route N2

Starting Monday, January 12, southbound buses operate along their regular path to Centre Street South and Olive Avenue, then detour:

eastward along Olive;
southward along Ritson Road South;
westward along Bloor Street East; and then
southward along Simcoe Street South to just south of Erie Avenue,
ending their trips.

Southbound buses skip their regular stops

  • on Simcoe Street South beyond Royal Street, at Mill Street, across from First Avenue and at Bloor Street West.

Instead, southbound buses drop off or pick up passengers at temporary stops

  • on Olive Avenue across from Court Street and beyond Drew Street,
  • on Ritson Road South at McNaughton Street and Bloor Street East and
  • on Bloor Street East at Merritt Street and Simcoe Street South.

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Starting Monday, July 13, northbound buses operate along their regular path to Bloor Street West and Park Road South [west], then detour:

westward along Bloor West;
northward along Stevenson Road South to Gibb Street,
resuming their regular path northward along Stevenson South.

Northbound buses skip their regular stops

  • on Park Road South beyond Montrave Avenue and at Quebec Street and
  • on Gibb Street beyond Grenfell Street and beside #450 Gibb.

Instead, northbound buses drop off or pick up passengers at temporary stops

  • on Stevenson Road South at Laval Drive and Gibb Street.

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