First published 10/5/2026, 12:03:15 AM · Last updated 10/5/2026, 12:38:30 AM

roadwork on HWY 400 (Southbound)

Nightly construction will close all lanes on the southbound HWY 400 on-ramp at Dunlop Street / Simcoe Road 90 in Barrie. The source lists the severity as unknown.

Illustrative image: King's Highway 406 (pronounced "four-oh-six"), commonly referred to as Highway 406, is a 400-series highway in the Canadian province of Ontario. The primary north-south route though the central portion of the Niagara Peninsula, Highway 406 connects Welland, Thorold and downtown St. Catharines to the Queen Elizabeth Way (QEW). Construction of Highway 406 began in 1963. The first section opened between St. Davids Road and Geneva Street on December 7, 1965, followed by a southward extension to Beav — Ken Lund from Reno, Nevada, USA/Wikimedia Commons, CC BY-SA 2.0

Categories: travel-and-transportation

Generated scores

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

Confidence: 6/10How 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: 1/10The 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).
Positivity: 4/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 3/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

The full on-ramp closure is relevant to people traveling through this location.

Location

Sources

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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