ConstructionMon, Sep 21, 2026 – Tue, Sep 29, 2026HWY 401 (Westbound)

Nightly Construction on HWY 401 Westbound Express between WARDEN AVE and HWY 404, Toronto.

Construction · Mon, Sep 21, 2026 – Tue, Sep 29, 2026

★ IMPACT 4/5 · ★ SOURCE-BACKED CLOSURE RECORD

Highway 401 status Traffic on Sep 21 Closures today This weekend

★ Quick facts

Road: HWY 401 (Westbound)
Location: Between WARDEN AVE and HWY 404
Start date: Mon, Sep 21, 2026 · 10:00 PM
End date: Tue, Sep 29, 2026 · 5:00 AM
Lanes affected: 2 Alternating Lane(s)
Severity: Heavy
Source: Ontario 511Event ID 308542

Traffic context

Traffic on Mon, Sep 21, 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 4:30 PM to 8 PM.
Main signal: Zach Bryan + Staind: Break The Cycle 25th Anniversary Tour + Charli xcx

Zach Bryan
Staind: Break The Cycle 25th Anniversary Tour
Charli xcx

What's affected

HWY 401 (Westbound) between WARDEN AVE and HWY 404 is impacted by construction work. The source lists affected lanes as: 2 Alternating Lane(s).

Corridors to compare: Highway 7 runs east–west north of the 401, while the 407 ETR is a tolled east–west highway. Avenue Road, Yonge Street, and Eglinton Avenue are signalized local corridors. Which one wins depends on the day — check a live map before you leave.

Same-day events

Zach Bryan - With Heaven On Tour
Sep 21 · Rogers Centre
Staind: Break The Cycle 25th Anniversary Tour
Sep 21 · RBC Amphitheatre
Charli xcx - Music, Fashion, Film Tour
Sep 21 · Scotiabank Arena
TTC Line 1 (Yonge-University) - St Clair to College stations - Full weekend closure - Saturday, September 19 and Sunday, September 20, 2026
Sep 21 · Toronto transit
TTC Line 1 (Yonge-University) - St Clair to College stations - Nightly early closures starting at 11:59 p.m. - Monday, September 21 to Thursday, September 24, 2026
Sep 21 · Toronto transit
Zach Bryan - With Heaven On Tour
Sep 22 · Rogers Centre
TTC Line 1 (Yonge-University) - St Clair to College stations - Nightly early closures starting at 11:59 p.m. - Monday, September 21 to Thursday, September 24, 2026
Sep 22 · Toronto transit
Toronto Maple Leafs vs. Ottawa Senators
Sep 23 · Scotiabank Arena
Tove Lo - ESTRUS TOUR
Sep 23 · Coca-Cola Coliseum
TTC Line 1 (Yonge-University) - St Clair to College stations - Nightly early closures starting at 11:59 p.m. - Monday, September 21 to Thursday, September 24, 2026
Sep 23 · Toronto transit

Plan ahead

★ RoadHighway 401 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Sep 21Same-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 →★ RouteDriving from Mississauga?Check how this road fits into the full route into Toronto.read →★ RouteDriving from Kitchener?Check how this road fits into the full route into Toronto.read →★ RouteDriving from Brampton?Check how this road fits into the full route into Toronto.read →