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Highway 401 Expansion Project

Greater Toronto Area
Project Type:
DBF - Design Build Finance
Infrastructure Type:
Contract Value:
$639.8 million
Estimated Value for Money:
$177.7 million

About the Project

The Highway 401 expansion project is approximately 18 kilometers long and is located within the western part of the Greater Toronto Area, from the Credit River in Mississauga to Regional Road 25 in Milton.


  • Request for Qualifications
    Mar 29, 2017
  • Prequalified Bidders Selected:
    Sep 29, 2017
  • Request for Proposals
    Feb 28, 2018
  • Winning Bidder Selected
    Apr 26, 2019
  • Construction Begins
    Nov 29, 2019
  • Construction Ends
    Oct 12, 2023

Latest News


  • 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 east of the James Snow Parkway;
  • 10 lanes from the James Snow Parkway to west of Regional Road 25;
  • Median HOV lanes; and
  • Support facilities and features - drainage, lighting, signage, ATMS, carpool lots etc.

Community And Green Benefits

  • reduced traffic congestion, greenhouse gases and fuel consumption
  • improved quality of life for commuters by reducing daily travel time

Economic Benefits

Design and construction of the project will generate employment opportunities, produce significant benefits for commuters.

WCC estimates the majority of the labour will come from the Greater Toronto Area. There will be approximately 400 workers on site at the peak of construction.

Terms of Use

These project documents are being made available on this website for informational purposes only. Neither Infrastructure Ontario nor the Ministry of Transportation makes any representation or warranty regarding the accuracy or completeness of the content or form of these documents.

Infrastructure Ontario and the Ministry of Transportation, in their sole and absolute discretion, may choose to make available on this website amendments, revisions, modifications or replacements to these documents. These documents remain open for further revision, modification, replacement or cancellation by Infrastructure Ontario and the Ministry of Transportation at any time and in no event shall either Infrastructure Ontario or the Ministry of Transportation be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with the use of or reliance on the content of these documents.