Road closureMon, Aug 17, 2026 – Wed, Aug 19, 2026HWY 427 (Southbound)

Nightly Construction on HWY 427 Southbound Off-ramp at HWY 409, Toronto.

Road closure · Mon, Aug 17, 2026 – Wed, Aug 19, 2026

★ IMPACT 3/5 · ★ SOURCE-BACKED CLOSURE RECORD

Highway 427 status Traffic on Aug 17 Closures today This weekend

Ended record

This closure record has ended. Use the current status pages for active road work and upcoming closures.

Highway 427 status Closures today

★ Quick facts

Road: HWY 427 (Southbound)
Location: At HWY 409
Start date: Mon, Aug 17, 2026 · 11:00 PM
End date: Wed, Aug 19, 2026 · 1:00 AM
Lanes affected: ALL LANES CLOSED
Severity: HeavyFull ramp closure
Source: Ontario 511Event ID 288087

Traffic context

Traffic on Mon, Aug 17, 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: Plan ahead
Busy window: 11 PM to 6:30 AM
Main signal: TTC Line 1 (Yonge-University)

TTC Line 1 (Yonge-University)

What's affected

HWY 427 (Southbound) at HWY 409 is impacted by a full ramp closure. The source lists affected lanes as: ALL LANES CLOSED.

Corridors to compare: Highway 27 and Kipling Avenue run north–south near the 427 as surface corridors. Highway 410 is farther west and connects Brampton with the 401. Which one wins depends on the day — check a live map before you leave.

Same-day events

TTC Line 1 (Yonge-University) - Lawrence West to St George stations - Nightly early closures starting at 11:59 p.m. - Monday, August 17 to Friday, August 21
Aug 17 · Toronto transit
Toronto Tempo v Indiana Fever
Aug 18 · Scotiabank Arena
Deep Purple with Special Guest Kansas
Aug 18 · RBC Amphitheatre
TTC Line 1 (Yonge-University) - Lawrence West to St George stations - Nightly early closures starting at 11:59 p.m. - Monday, August 17 to Friday, August 21
Aug 18 · Toronto transit
Toronto FC v Charlotte FC
Aug 19 · BMO Field
TTC Line 1 (Yonge-University) - Lawrence West to St George stations - Nightly early closures starting at 11:59 p.m. - Monday, August 17 to Friday, August 21
Aug 19 · Toronto transit

Plan ahead

★ RoadHighway 427 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Aug 17Same-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 →