TODAY / AUG 7HEAVY
YONGE ST · FULL ROADWAY CLOSURE · YONGE ST AT DUNDAS ST W TO SHUTER ST★QUEEN ST W · LANE CLOSURE · NEAR YONGE ST★
416TRAFFIC
ConstructionSun, Aug 9, 2026 – Sat, Aug 15, 2026HWY 409 (Westbound)

Nightly Maintenance on HWY 409 Westbound between 401 and HWY 427, Toronto.

Construction · Sun, Aug 9, 2026 – Sat, Aug 15, 2026
★ IMPACT 2/5 · ★ SOURCE-BACKED CLOSURE RECORD
Highway 409 statusTraffic on Aug 9Closures todayThis weekend

★ Quick facts

Location
Between 401 and HWY 427
Start date
Sun, Aug 9, 2026 · 7:00 PM
End date
Sat, Aug 15, 2026 · 5:00 AM
Lanes affected
1 Alternating Lane(s)
Severity
Plan ahead
Source
Ontario 511Event ID 283158

Traffic context

Traffic on Sun, Aug 9, 2026

This closure is one part of the day. The daily brief shows the event load, other road work, and the likely busy window from the same calendar data.

Open daily brief
Day status
Heavy
Busy window
Arrival pressure likely builds 7 PM to 8 PM.
Main signal
National Bank Open Toronto + RUSH: Fifty Something + Lakeshore West GO line planned construction
  • National Bank Open Toronto
  • Yorkville Ave
  • RUSH: Fifty Something

What's affected

HWY 409 (Westbound) between 401 and HWY 427 is impacted by construction work. The source lists affected lanes as: 1 Alternating Lane(s).

Same-day events

Plan ahead

Read next

★ RoadHighway 409 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Aug 9Same-day events and other road restrictions around this closure.read →★ ClosuresToronto closures todayBrowse active and upcoming construction records.read →★ WeekendThis weekend's closuresSee this closure beside events, transit work, and other road restrictions.read →