Ontario Newsroom

Construction Begins on Highway 401 Expansion from Mississauga to Milton

News Release

Construction Begins on Highway 401 Expansion from Mississauga to Milton

Government reducing congestion and improving quality of life for workers, families and businesses

Ministry of Transportation

MISSISSAUGA — Ontario's government is making life easier for drivers by widening 18 kilometres of Highway 401 from Mississauga to Milton.

Kinga Surma, Associate Minister of Transportation, announced that the province is putting people first by investing $640 million to widen Highway 401, which will shorten commute times and encourage investment and job creation. 

"Our government is committed to strengthening Ontario's highway network and making Ontario open for business," said Associate Minister Surma. "This crucial expansion of Highway 401 means that thousands of Ontarians will spend less time in traffic and more time on the things that matter to them - being with family, friends or at work."

The project will widen 18 kilometres of highway from the Credit River in Mississauga to Regional Road 25 in Milton and includes reconstruction of bridges as well as upgrades to support facilities and features. Construction is underway and drivers can expect to use the expanded highway by 2022. Widening the highway will reduce congestion and improve quality of life for workers, families and businesses in Ontario.

Quick Facts

  • Once completed, the expanded highway will include:
    • 12 lane core-collector system from the Credit River to Winston Churchill Boulevard.
    • 10 lanes from Winston Churchill Boulevard to Highway 407 ETR/ Highway 401 interchange.
    • 12 lane core-collector system from Highway 407 ETR/ Highway 401 interchange to James Snow Parkway.
    • 10 lanes from James Snow Parkway to RR 25.
    • Median High Occupancy Vehicle (HOV) lanes.
    • New or improved support facilities and features, such as drainage, lighting, signage and carpool lots.
  • The project is being delivered through Infrastructure Ontario’s design, build and finance Public-Private Partnership model, which transfers appropriate risks associated with design, construction and financing of the project to the private sector.
  • West Corridor Constructors was awarded the contract to design, build and finance the Highway 401 Expansion project.
  • Approximately 250,000 vehicles travel on Highway 401 in the Peel and Halton regions on a daily basis.

Additional Resources


“Hundreds of thousands of commuters and commercial vehicles travel on Highway 401 in this region every day. This project will be beneficial to all the people and businesses who rely on these roads.”

Nina Tangri

MPP for Mississauga-Streetsville

“Highway 401 is a vital corridor for economic activity across the province. Funding key highway projects like this will improve our critical trade links and encourage investment in Ontario.”

Sheref Sabawy

MPP for Mississauga-Erin Mills

“Our government committed to building a better highway network that will improve the quality of life for people in Ontario. We are making huge investments in transportation infrastructure to get people where they need to go.”

Rudy Cuzzetto

MPP for Mississauga-Lakeshore

“People and businesses along Highway 401 depend on it as it is the main highway route in this fast-growing area. By investing in this project, we are building a better transportation system for the future of our region.”

Deepak Anand

MPP for Mississauga-Malton

“This stretch of Highway 401 is one of the busiest in the GTA. Making smart investments in both highway and transit projects is part of our plan to support economic growth and get people moving.”

Kaleed Rasheed

MPP for Mississauga East-Cooksville

“Today is a good day for commuters across the GTA. Expanding lanes on this key section is an important part of expanding our regional transportation network.”

Amarjot Sandhu

MPP for Brampton West

Media Contacts



Driving and Roads Government Travel and Recreation