● FRI, MAY 1 · TODAY · PLAN AHEAD ●★
416TRAFFIC
ConstructionMon, May 4, 2026 – Fri, May 8, 2026HWY 407 ETR (Westbound)

Daily Moving Maintenance Closure on HWY 407 ETR Westbound between HARMONY RD N, Oshawa and SIDEL…

Construction · Mon, May 4, 2026 – Fri, May 8, 2026
★ IMPACT 3/5 · ★ SOURCE-BACKED CLOSURE RECORD

★ Quick facts

Location
At HARMONY RD N
Start date
Mon, May 4, 2026 · 7:00 AM
End date
Fri, May 8, 2026 · 4:30 PM
Lanes affected
1 Alternating Lane(s)
Severity
Heavy
Source
Ontario 511Event ID 239603

What's affected

HWY 407 ETR (Westbound) at HARMONY RD N is impacted by construction work. Expect impact to 1 Alternating Lane(s).

Suggested detour: The 401 is the free alternate; Highway 7 handles short trips through Vaughan, Markham, and Pickering.

Same-day events

Plan ahead

Read next

★ RoadHighway 407 ETR statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Mon, May 4, 2026Same-day events and other road restrictions around this closure.read →★ ClosuresAll road closuresBrowse active and upcoming construction records.read →