Businesses and Fiesta Pavilions open during roadworks projects on Simcoe St. S., Wilson Rd. S. and Park Rd. S.

Oshawa is experiencing some of the most significant transportation upgrades in its history – from the GO Train extension to the future widening of Highway 401, including new overpasses and major road improvements which will support the movement of people and goods across our City at the completion of these projects.

These projects, delivered by regional and provincial partners, will bring major benefits: better transit, safer roads, reduced congestion, and stronger connections across Durham Region and into the G.T.A. But during construction, they also bring detours, delays, and changes to how we move through the city.

What hasn’t changed is that local businesses in the impacted areas – including Simcoe St. S., Wilson Rd. S., Park Rd. S., as well as Bloor St. in these areas – remain open. Many of these businesses are small, family‑run, and deeply rooted in our community. They need our support now more than ever.

Let’s show them that Oshawa stands together. Choose local. Shop local. Support the businesses that contribute to our neighbourhoods and local economy. If you are participating in Fiesta Week (June 21-27), make sure to check out all the pavilions are follow detour signage, if needed.

Road improvement projects

Current concurrent projects include: 

• Simcoe St. bridge replacement – Metrolinx project. The full closure of Simcoe St. between Avenue and Albany Streets for two years as part of Metrolinx’s Bowmanville Extension of the Lakeshore East GO rail service.
  
  
• Wilson Rd. S. overpass replacement – M.T.O. project. The full closure of Wilson Rd. S. from Dieppe Ave. to Bloor St. E. until late Spring 2027, as part of M.T.O.’s Highway 401 widening program.
  
  
• Cubert St. and Park Rd. S. Highway 401 overpass replacement – M.T.O. project. This work requires the long-term closure of Cubert St. and Park Rd. S. from Bloor St. to College Ave. until Fall 2027. Cubert St. will be closed beginning June 8, 2026 and Park Rd. S. will be closed beginning July 13. A weekend closure of Park Rd. S. is anticipated for June 27 and 28.

Stay informed

• Check Ontario 511 for the latest M.T.O. road closures and traffic updates.
• Visit Metrolinx online for updates on the Lakeshore East GO expansion and traffic impacts.
• See the Region of Durham’s website for details on regional roadwork and closures.