MTO Class Environmental Assessment (EA) Process
Contracts A and B are following the approved planning process for a ‘Group B’ in accordance with the MTO Class EA for Provincial Transportation Facilities (2000). The two contracts are proceeding along different design and construction timelines and will therefore each follow a separate MTO Class EA Group B process. A Public Information Centre is planned for Contract B at a future date and advance notification will be provided.
Contract A
A Design and Construction Report (DCR) has been prepared to document the study process completed for Contract A including the recommended detail design improvements, anticipated environmental impacts and proposed mitigation measures as well as the consultation undertaken throughout the process.
The Contract A DCR can be accessed on the Documentation page
Contract B
A separate Design and Construction Report (DCR) will be prepared to document the study process completed for Contract B including the recommended detail design improvements, anticipated environmental impacts and proposed mitigation measures as well as the consultation undertaken throughout the process.
The DCR for Contract B will be made available at a future date and will be placed on the public record for a 30-day comment period. Notification regarding the availability of the report will be provided.
May 2021
Notice of Study Commencement
CONTRACT A (GWP 2146-20-00)
Highway 401 / Wilson Road Overpass Replacement Design and Construction Report (DCR)
30 day comment period - April to May 2024
CONTRACT A (GWP 2146-20-00)
Highway 401 / Wilson Road Overpass Replacement 
Construction Start - Fall 2024
CONTRACT B (GWP 2106-19-00)
Highway 401 / Bloor Street / Harmony Road Interchange Reconstruction
Public Information Centre - Spring 2026
CONTRACT B (GWP 2106-19-00)
Highway 401 / Bloor Street / Harmony Road Interchange Reconstruction
Design and Construction Report (DCR)
30 day comment period - 2026
CONTRACT B (GWP 2106-19-00)
Highway 401 / Bloor Street / Harmony Road Interchange Reconstruction
Construction Start - 2028