First published Oct 28, 2026, 5:10:15 PM UTC · Last updated Oct 28, 2026, 5:10:15 PM UTC

All lanes closed on HWY 427 southbound on-ramp at Rathburn Road, Toronto

A highway-maintenance closure is reported on the HWY 427 southbound on-ramp at Rathburn Road in Toronto, with all lanes closed. Severity is listed as unknown.

At a glance

Affected location: Rathburn Road, Toronto

Illustrative image: Highway 12 southbound approaching RR23 (Mara Road) and Thorah Concession Road 8 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

The reported closure affects all lanes of the named on-ramp.

Location

Highlighted marker: this event.

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: 2/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 5/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

Ontario 511 Traffic Events accidentsAndIncidents on HWY 427 (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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