Ontario Line
A new 15.6-km subway line in Toronto that will run from Exhibition Place, through downtown, all the way to Line 5 Eglinton at Don Mills Road.- Projects & Programs
- Ontario Line
- Notices
- Overnight Construction on Cosburn Avenue
Overnight Construction on Cosburn Avenue
Expected Duration
Jul 31, 2026 - Aug 24, 2026
Working Hours
Monday to Friday, 9:00 p.m. to 7:00 a.m.
Date of Notice
Jul 28, 2026
Cosburn Avenue construction area work zone
What is Happening?
Crews will be digging a trench across Cosburn Avenue to house pipes that transfer bentonite required for slurry wall activities. Slurry walls are reinforced concrete walls constructed deep into the ground. These walls will support the surrounding soil and keep the excavation areas stable.
What to expect
- Construction lighting may be visible from the work site.
- Trucks and construction equipment may generate dust during construction.
- Increased presence of construction vehicles and equipment can be expected in the work area.
- Work areas will be clearly marked or fenced off to ensure public safety.
- Please exercise caution around active construction sites.
- Work may be delayed or rescheduled due to weather or unforeseen circumstances.
Traffic Changes
- Minor delays may be experienced near the work zone.
- Cosburn Avenue will be reduced for the duration of the work. Signage will redirect traffic around the work zones.
- Two-way directional traffic will be maintained during the work.
- A paid duty officer, flaggers and detour signs will be onsite to direct traffic as needed.
Pedestrian Access
- Temporary sidewalk closures or pedestrian detours will be in place while the work is underway, with signs in place to direct pedestrians as needed.
Noise and Vibration
- Residences and businesses in the area may experience noise and vibration caused by construction equipment related to this work.
- Crews will take measures to minimize disruptions to the surrounding area wherever possible.
- To minimize noise impacts on the community, noise and vibration monitoring equipment will be installed prior to construction. These devices will help to detect exceedances early to proactively conduct corrective actions as needed while crews work.
Transit Service
- There is no anticipated impact to transit services.
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770 Queen St. E., Toronto, ON
810 Danforth Ave., Toronto, ON