ConstructionMon, Aug 3, 2026 – Sat, Aug 8, 2026HWY 409 (Westbound)
Nightly Maintenance on HWY 409 Westbound between 401 and HWY 427, Toronto.
Construction · Mon, Aug 3, 2026 – Sat, Aug 8, 2026
★ IMPACT 2/5 · ★ SOURCE-BACKED CLOSURE RECORD
★ Quick facts
- Location
- Between 401 and HWY 427
- Start date
- Mon, Aug 3, 2026 · 7:00 PM
- End date
- Sat, Aug 8, 2026 · 5:00 AM
- Lanes affected
- 1 Alternating Lane(s)
- Severity
- Plan ahead
- Source
- Ontario 511Event ID 280026
Traffic context
Traffic on Mon, Aug 3, 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.
- Day status
- Heavy
- Busy window
- Arrival pressure likely builds 7 PM to 8 PM.
- Main signal
- National Bank Open Toronto + Daniel Caesar
- National Bank Open Toronto
- Daniel Caesar
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
- National Bank Open Toronto
Aug 3 · Sobeys Stadium
- Daniel Caesar - Son Of Spergy Tour
Aug 3 · Scotiabank Arena
- Train & Barenaked Ladies with Matt Nathanson
Aug 4 · RBC Amphitheatre
- National Bank Open Toronto
Aug 4 · Sobeys Stadium
- Olivia Dean: The Art Of Loving Live
Aug 4 · Scotiabank Arena
- 5 Seconds of Summer: EVERYONE'S A STAR! World Tour
Aug 5 · RBC Amphitheatre
- National Bank Open Toronto
Aug 5 · Sobeys Stadium
- Olivia Dean: The Art Of Loving Live
Aug 5 · Scotiabank Arena
Plan ahead
Read next
★ RoadHighway 409 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Aug 3Same-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 →