● WED, MAY 13 · TODAY · HEAVY ●★JAYS VS RAYS 7:07 PM ROGERS CENTRE★QUEEN ST W CLOSURE · QUEEN ST W 43M WEST OF YONGE ST★
416TRAFFIC
ConstructionTue, May 19, 2026 – Fri, May 22, 2026HWY 400 (Southbound)

Nightly Construction on HWY 400 Southbound Collector between BASS PRO MILLS DRIVE and HIGHWAY 7,…

Construction · Tue, May 19, 2026 – Fri, May 22, 2026
★ IMPACT 4/5 · ★ SOURCE-BACKED CLOSURE RECORD

★ Quick facts

Location
Between BASS PRO MILLS DRIVE and HIGHWAY 7
Start date
Tue, May 19, 2026 · 10:00 PM
End date
Fri, May 22, 2026 · 6:00 AM
Lanes affected
1 Alternating Lane(s)
Severity
Heavy
Source
Ontario 511Event ID 243377

What's affected

HWY 400 (Southbound) between BASS PRO MILLS DRIVE and HIGHWAY 7 is impacted by construction work. Expect impact to 1 Alternating Lane(s).

Suggested detour: Highway 27 and Yonge Street are the practical alternates south of King City; both are heavily congested in peak.

Same-day events

Plan ahead

Read next

★ RoadHighway 400 statusSegment-level closures, long-running restrictions, and upcoming work.read →★ DayTraffic on Tue, May 19, 2026Same-day events and other road restrictions around this closure.read →★ ClosuresAll road closuresBrowse active and upcoming construction records.read →