First published Oct 11, 2026, 5:06:15 AM UTC · Last updated Oct 11, 2026, 5:06:15 AM UTC

accidentsAndIncidents on HWY 403 MISSISSAUGA (Eastbound)

Reported by Ontario 511 Traffic Events

A collision on the eastbound HWY 403 in Mississauga closed all lanes. The source reports the severity as unknown.

At a glance

Affected location: Mississauga

Illustrative image: Eastbound on Highway 403 in Hamilton approaching Highway 6 interchange near border of Hamilton and Burlington. Taken shortly after File:1 Ontario Hamilton-Toronto HWY 403.jpg and before File:3 Ontario Hamilton-Toronto HWY 403.jpg . — Laslovarga/Wikimedia Commons, CC BY-SA 3.0

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Why it matters

The full road closure affects travel on the specified highway ramp.

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: 2/10How 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: 6/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

Ontario 511 Traffic Events accidentsAndIncidents on HWY 403 MISSISSAUGA (Eastbound)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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Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

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