6th Line Interchange EA
In 2017, the Town of Innisfil completed a Schedule 'C' Municipal Class Environmental Assessment (EA) for the proposed interchange at 6th Line and Highway 400. The study:
- Confirmed the need and justification for the project
- Documented existing environmental conditions
- Examined alternatives
- Defined the preliminary interchange design
An Environmental Study Report (ESR) and Study Design Report were prepared to document the process, consultations, and recommended solutions.
Study notices
View the study notices and open house exhibits associated with the project:
- Notice of Study Commencement
- Notice of Public Open House No. 1
- Notice of Public Open House No. 2
- Notice of Study Completion
EA Review and Study Update
In 2023, the Town entered into a co-proponency with the Ontario Ministry of Transportation to complete a Municipal Class EA Review of the preliminary design for the new interchange.
This review identified several issues that suggested design changes for the proposed intersection were needed. A Study Update was prepared to outline these findings and proposed changes, which include:
- Updating the interchange design to meet current engineering standards and best practices
- Realigning the proposed interchange ramps
- Replacing the previously proposed roundabouts at the ramp terminals with traffic signals
- Replacing the existing Innisfil Creek culvert under Highway 400 with new bridges
- Constructing new bridges over Innisfil Creek for the future West-to-South and South-to-East/West ramps
Community members had the opportunity to provide feedback on the Study Update and Preferred Interchange Plans by July 19, 2024.
- 6th Line Interchange – Interim Preferred Plan – June 2024
- 6th Line Interchange – Ultimate Preferred Plan – June 2024