✓ ALL CLEAR✓ THU, APR 30 · ALL CLEAR★NO DOWNTOWN EVENTS★NO MAJOR CLOSURES★DRIVE EASY · ENJOY THE QUIET★UPDATED 21:11 ET★✓ THU, APR 30 · ALL CLEAR★NO DOWNTOWN EVENTS★NO MAJOR CLOSURES★DRIVE EASY · ENJOY THE QUIET★UPDATED 21:11 ET★
416TRAFFIC
ConstructionMon, May 11, 2026 – Tue, May 12, 2026HWY 404 (Southbound)

Daily Maintenance on HWY 404 Southbound Off-ramp at MAJOR MACKENZIE DRIVE, Markham-Richmondhill .

Construction · Mon, May 11, 2026 – Tue, May 12, 2026
★ IMPACT 4/5 · ★ SOURCE-BACKED CLOSURE RECORD

★ Quick facts

Location
At MAJOR MACKENZIE DRIVE
Start date
Mon, May 11, 2026 · 8:00 AM
End date
Tue, May 12, 2026 · 2:00 PM
Lanes affected
1 Left(with HOV) Lane(s)
Severity
Heavy
Source
Ontario 511Event ID 238664

What's affected

HWY 404 (Southbound) at MAJOR MACKENZIE DRIVE is impacted by construction work. Expect impact to 1 Left(with HOV) Lane(s).

Suggested detour: Woodbine Avenue and Leslie Street are the practical alternates, but both can be slow through Markham and Richmond Hill.

Same-day events

Plan ahead

Read next

★ RoadHighway 404 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Mon, May 11, 2026Same-day events and other road restrictions around this closure.read →★ ClosuresAll road closuresBrowse active and upcoming construction records.read →