GWP 3078-18-00

Interchange and Underpass Improvements
TESR Review and Initiate Detail Design Group B Class EA

This Group Work Project includes the review of improvement options to Highway 401 interchanges, bridges, and culverts. Design alternatives for the following works will be developed and reviewed under this GWP:

  • Replacement of the Drake Road Underpass
  • Replacement of the Dillon Road Underpass
  • Replacement of the Bloomfield Road Underpass and Interchange Reconfiguration
  • Rehabilitation of Queen’s Line Underpass and Interchange Reconfiguration
  • Rehabilitation of Harwich Road Underpass
  • Rehabilitation of Mull Road Underpass
  • Rehabilitation of Scane Road Underpass
  • Rehabilitation of Victoria Road Underpass and Interchange Reconfiguration
  • Rehabilitation of Kenesserie Road Underpass
  • Rehabilitation of Orford Road Underpass and Interchange Reconfiguration
  • Rehabilitation of Victoria Road South Culvert

Timing for construction is subject to funding and approvals.


  • Project Initiation
  • Field Investigations
  • Consultation
  • Class EA and Design
  • Under Construction
  • Construction Complete


Ongoing stakeholder consultation will take place throughout the Preliminary and Detail Design and Class EA Study process.

The Consultation Plan includes (dates subject to change):

  • Notice of Study Commencement (Late November 2019)
  • Consultation with regulatory agencies (Ongoing)
  • Communication with Indigenous communities and Métis groups (Ongoing)
  • Communication with directly affected property owners, residents, and businesses in the study area (Ongoing)
  • Meetings with agencies to discuss issues related to the project activities (Spring/Summer 2020)
  • Notice of Public Information Centre (Autumn 2020)
  • Public Information Centre (Winter 2020)
  • Preparation of a Transportation Environmental Study Report (TESR) Addendum and 30-day public review, if required (Summer 2021)
  • Ongoing opportunity to submit comments and feedback throughout design

Adjacent Ministry Projects

One additional Ministry contract is located within the study limits:

Highway 401 Expansion from 0.55 km East of Essex Road 42 to 1.8 km West of Merlin Road. The project teams for each of these projects will coordinate throughout the study. Project Reference: GWP 3034-19-00. Click here to visit the adjacent project’s website.

Contact the project team to provide any comments you may have with respect to this GWP, or if you wish to be added to the study mailing list. Please provide your name, mailing address, and indicate if you prefer communication by email.