Highway 413 Project

The Ontario Ministry of Transportation is proposing to construct and maintain a new highway located in the northwest Greater Toronto Area. As proposed, the Highway 413 Project would be 59 kilometres in length and pass through the municipalities of Vaughan, Caledon, Brampton, and Halton Hills. It would connect highway 400 (between Kirby Road and King-Vaughan Road), to the highway 401/407 interchange area, located near the northern end of highway 403.


Please note that the project was formerly known as the GTA West Project.


Latest update

April 15, 2024 — The Minister of Environment and Climate Change’s 2021 Designation Order for the Highway 413 Project under the Impact Assessment Act has been set aside in Federal Court proceedings. The Governments of Canada and Ontario have signed a Memorandum of Understanding and established a joint federal-provincial working group governed by a Terms of Reference. This working group will leverage collective expertise to protect the environment and ensure impacts to federally listed species at risk and their critical habitats are considered before the project moves into the detailed design stage.


Key documents

Key documents
Document Number Document Title File Date
264 Terms of Reference: Bilateral Federal-Provincial Working Group for Ontario's Highway 413 PDF (74 KB) March 11, 2024
151 Minister's Order - May 3, 2021
150 Minister's Response - May 3, 2021
1 Request for Designation of Project PDF (683 KB) February 3, 2021


Ontario Region
Impact Assessment Agency of Canada
600-55 York Street
Toronto, Ontario M5J 1R7
Email: 413@iaac-aeic.gc.ca

  • Location

    • Highway 400 (Ontario)
    • Highway 401/407 (Ontario)
  • Nature of Activity

    • Highways and Roads
  • Assessment Status

  • Start Date

  • Proponent

    Ontario Ministry of Transportation
  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Awaiting initial project description
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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