ConstructionSun, May 3, 2026 – Sat, May 9, 2026HWY 401 (Westbound)
Nightly Construction on HWY 401 Westbound between SIMCOE ST and STEVENSON ROAD, Oshawa.
Construction · Sun, May 3, 2026 – Sat, May 9, 2026
★ IMPACT 5/5 · ★ SOURCE-BACKED CLOSURE RECORD
★ Quick facts
- Location
- Between SIMCOE ST and STEVENSON ROAD
- Start date
- Sun, May 3, 2026 · 8:00 PM
- End date
- Sat, May 9, 2026 · 5:00 AM
- Lanes affected
- 2 Right Lane(s)
- Severity
- Severe
- Source
- Ontario 511Event ID 239249
What's affected
HWY 401 (Westbound) between SIMCOE ST and STEVENSON ROAD is impacted by construction work. Expect impact to 2 Right Lane(s).
Suggested detour: Highway 7 to the north and the 407 ETR (toll) are the practical alternates. Avenue Road, Yonge, and Eglinton cannot absorb 401 volume.
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