Frequently Asked Questions

How do I stay up to date on traffic impacts?

The website's Traffic Impacts section is updated weekly with Highway 417 lane and ramp closures, local street closures and detours associated with this project. The province of Ontario also operates a free Traveller Information website which provides traffic information for the entire province. The website can be accessed at

When will construction be completed?

Construction is anticipated to be completed by the end of 2025.

Will there be night work and weekend work?

Yes. To reduce impacts to the travelling public during the busiest travel times (i.e., during the day, particularly weekday rush hour), it is necessary to complete some work at night or over the weekends.

Why is the Rapid Bridge Replacement (RBR) method being used?

Use of the RBR method reduces impacts to the travelling public. The bridges are constructed nearby to the highway in staging sites and then moved into place. While this does require a full weekend closure of Highway 417, reconstructing the structures in place would require long term lane closures of the highway.

Who is involved in this project?

The Ministry of Transportation is responsible for managing and maintaining the province's highway infrastructure. They have contracted Kiewitt-Dufferin Midtown Partnership to undertake the construction of this project. The Ministry has also engaged Morrison Hershfield Limited to provide Contract Administration services for this project.

Who do I contact if I have additional questions?

Please submit your question via our Contact Us