Major highway construction projects set to impact southern Ontario this summer


Published July 8, 2024 at 11:18 am

Anthony Urciuoli/ photo

Summer is in full swing, and as a result, the province is wasting no time stepping on the gas surrounding ongoing highway projects in southern Ontario and the Peel Region.

According to Ontario’s Ministry of Transportation (MTO), due to a combination of ideal conditions and urgency, numerous major arteries in the southern scope of the province are moving forward with major roadwork projects.

MTO officials told via email that over $3-billion has been invested into roughly 650 active projects throughout the province. As a result, half of this multi-billion dollar pool has been injected directly into southern Ontario’s highway infrastructure, which will mainly impact Mississauga, Brampton and Caledon. 

Major projects that will continue throughout the summer include:

Highway 404 Widening and Rehabilitation

MTO officials told via email that the widening of Highway 404 includes the application of an additional HOV lane, three general-purpose lanes and a 16th Avenue bridge replacement alongside the Highway 7 bridge. 

This project is anticipated to be completed near the end of this year. 

Additional projects anticipated to impact Highway 404 include the ongoing rehabilitation project from Stouffville Road to Mulock Drive. This project launched this summer and includes several upcoming closures, such as a one-lane closure between Aurora Road and Stouffville Road anticipated for this week. 

Additional closures include a 12-week closure of the Bloomington Road westbound to Highway 404 southbound ramp and a 12-week closure of the Bloomington Road eastbound to Highway 404 northbound ramp.

However, according to the MTO, no set timeline has been given for these upcoming closures. 

Rehabilitation of Highway 401, Highway 427 and Highway 409

MTO representatives told via email that this project is designed as a major overhaul, which includes a full-depth asphalt removal and concrete base repairs. This project started in 2022 and is anticipated to be completed later this year. 

Additional construction incentives surrounding Highway 401 include the completion of four additional bridges, concrete base repairs, asphalt placement and electrical work from east of Jane Street to east of Yonge Street.

Construction for these specific endeavors is anticipated to last throughout this summer and conclude in 2025. 

Interchange Projects for Highways 401, 403 and 410 

MTO representatives informed in an emailed statement that construction for these overlapping projects kicked off near the end of this spring and is anticipated to continue throughout the summer, with the end goal being the rehabilitation of westbound bridges on Highway 401 over Highway 403/410 and Tomken Road.

An additional bridge will also see maintenance on the 410 north-Highway 403 eastbound ramp.  

MTO officials told via email that when it concerns detours and closures surrounding these projects, luckily, “For Highway 401 westbound express, only one right lane is currently closed long-term to traffic. This will be in effect until December 2024. This closure is for rehabilitating the bridges, and two lanes are available for traffic; thus, no detour routes are required.”

Additional information on highway construction impacting regions in Southern Ontario can be found on the Ontario Ministry of Transportation’s official website.  

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