416 TrafficKnow before you go

Nightly Construction on HWY 400 Northbound Express between BASS PRO MILLS DRIVE and MAJOR MACKENZ…

Construction · Sun, May 3, 2026 – Fri, May 8, 2026

Quick facts

Location
Between BASS PRO MILLS DRIVE and MAJOR MACKENZIE DRIVE
Start date
Sun, May 3, 2026 · 10:00 PM
End date
Fri, May 8, 2026 · 6:00 AM
Lanes affected
2 Alternating Lane(s)
Severity
Severe

What's affected

HWY 400 (Northbound) between BASS PRO MILLS DRIVE and MAJOR MACKENZIE DRIVE is impacted by construction work. Expect impact to 2 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