Scheduled for Nov 2, 2026, 2:00:00 AM UTC

First published Oct 27, 2026, 10:46:15 PM UTC · Last updated Oct 27, 2026, 10:46:15 PM UTC

roadwork on HWY 400 (Southbound)

Nightly construction is reported on southbound HWY 400 in Vaughan, with three alternating lanes affected and several ramps closed. The source lists severity as unknown.

At a glance

Affected location: Vaughan

Illustrative image: Southbound on Highway 12 approaching Thorah Concession Road 9 in Brock, Ontario. — Adam Moss from East Amherst, New York, United States/Wikimedia Commons, CC BY-SA 2.0

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Why it matters

Drivers using the affected highway segment and ramps may encounter lane and ramp closures.

Location

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Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 7/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 1/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 4/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

Ontario 511 Traffic Events roadwork on HWY 400 (Southbound)Contains information licensed under the Open Government Licence – Ontario (https://www.ontario.ca/page/open-government-licence-ontario). Source: Ontario 511. Information is provided “as is”; actual roadway conditions may differ. No endorsement by Ontario 511, MTO, or the Government of Ontario is implied. Usage terms

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Continue exploring

Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

Nearby · within 200 km
accidentsAndIncidents on HWY 427 (Northbound)Oct 27, 2026, 3:16 PM UTC
A highway maintenance report describes a full closure of all lanes on the HWY 427 northbound ramp at Campus Road/Fasken Drive in Toronto. The report lists the severity as unknown and was published October 27, 2026.
Nearby · within 200 km
roadwork on HWY 400 (Southbound)Oct 27, 2026, 3:00 AM UTC
2 reports describing the same event are grouped here. Expand the group to review every source report.
Nearby · within 200 km
roadwork on HWY 400 (Northbound)Oct 27, 2026, 3:00 AM UTC
An overnight engineering investigation is reported on the northbound on-ramp in Barrie, with all lanes closed. MTO is listed as the reporting organization.
Nearby · within 200 km
roadwork on HWY 26 (Eastbound)Oct 26, 2026, 11:00 PM UTC
Nightly construction is reported on eastbound HWY 26 between Mosley Street/Simcoe Road 92 and Locke Avenue in Clearview, Ontario. All lanes are closed.
Same topic
Snowfall - YellowheadOct 27, 2026, 10:19 PM UTC
The source reports localized snowfall of 5–10 cm in Yellowhead, north of Tete Jaune Cache, through after midnight. Travel on Highway 16 may be challenging, with reduced visibility at times.
Same topic
TfL disruption — London TramlinkOct 27, 2026, 8:28 PM UTC
TfL reported no service on several London Tramlink sections because of a track obstruction and planned engineering work; the rest of the line had good service. No publication time was supplied.

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