Highway 401 and Dorchester Road
Bridge Replacement and Interchange Improvements

The Ontario Ministry of Transportation (MTO) awarded Green Infrastructure Partners Inc. (GIP) with Dillon Consulting Limited (Dillon), the Design-Build (DB) contract for the Class Environmental Assessment (EA), Detailed Design and construction of the Highway 401 and Dorchester Road Bridge Replacement and Interchange Improvements in the Municipality of Thames Centre, Middlesex County. The project includes replacement of the bridge and reconfiguration of the interchange ramps.

​

The project was completed following the MTO Class EA for Provincial Transportation Facilities (2000) for a Group 'B' undertaking. Group 'B' projects are considered major improvements to existing transportation facilities. This project was built upon the previously completed Preliminary Design as documented in the Transportation Environmental Study Report (January 2016), which received Environmental Clearance in March 2016. 

​

In accordance with the MTO Class EA, a Design and Construction Report (DCR) was prepared to document the study. The DCR is was available for a 30-day public comment period from July 19, 2023, to August 19, 2023 on this website. Please contact the project team at Hwy401Dorchester@dillon.ca if you have any accommodation needs, or require alternate formats in order to review this document. 

​

The project received Environmental Clearance - Construction Start in November 2023. Construction began in Spring 2024. Additional details regarding construction can be reviewed on the 'Construction Timing' tab.

​

For media inquiries, please contact MTO.media@ontario.ca.

​

Project documents are located below.