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Ontario to expand 401 to manage congestion and improve commutes

Ontario to expand 401 to manage congestion and improve commutes

Ontario is creating jobs and keeping people moving by widening 18 kilometers of Highway 401 from the Credit River in Mississauga to Regional Road 25 in Milton. The Highway 401 Expansion project includes adding HOV lanes in each direction and widening the existing six lane configuration to:

  • Twelve lanes from the Credit River to Winston Churchill Boulevard
  • Ten lanes from Winston Churchill Boulevard to Highway 407 ETR / Highway 401 interchange
  • Twelve lanes from Highway 407 ETR / Highway 401 interchange to James Snow Parkway
  • Ten lanes from the James Snow Parkway to Regional Road 25

Widening the 401 will relieve congestion, allow for a more efficient transportation and flow of goods, and will help accommodate continued population and employment growth in the region.

More: PSD Study "An Analysis of Traffic Congestion and Policy Solutions of Canadian Municipalities"

Ontario is making the largest infrastructure investment in hospitals, schools, public transit, roads and bridges in the province's history. To learn more about what's happening in your community, go to

Quick Facts

  • The province has issued a Request for Qualifications to design, build and finance the Highway 401 expansion project—the first step in getting construction underway.
  • The project is being delivered under Infrastructure Ontario’s Alternative Financing and Procurement model, which transfers risks associated with design, construction and financing of the project to the private sector.
  • The average daily traffic for the Highway 401 in the Peel and Halton Region is approximately 108,000 to 188,000 vehicles per day.
  • Ontario is committing over $2.1 billion to repair and expand provincial highways and bridges across the province.


From the Government of Ontario Newsroom