Potholes in St. Marys, ON

Population 7,386 · Ontario

This page shows pothole reports submitted in St. Marys, Ontario. RoadRot is a free, independent platform — anyone can report a pothole, and reports get forwarded to the responsible municipality.

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Report a pothole in St. Marys

Why St. Marys gets potholes

St. Marys sits in southwestern Ontario's humid continental climate zone, where temperatures hover around 0°C repeatedly through the November-to-March window. That freeze-thaw cycling is the main culprit: water seeps into pavement cracks, freezes, expands, and breaks the road apart from the inside. The town maintains roughly 113 km of road lanes through those conditions, and a major ice storm over the 2025-2026 holiday period was a reminder of how quickly a single weather event can set up a rough spring season.

How to report potholes in St. Marys

St. Marys doesn't appear to operate a 311 service, so your first stop for an official pothole complaint is the Town of St. Marys Public Works department, reachable through townofstmarys.com. For potholes on provincial highways like Hwy 7 or Hwy 19, those roads fall under the Ministry of Transportation Ontario (MTO) and can be reported through 511on.ca. County roads on the urban fringe are a third authority entirely, maintained by Perth County, not the Town. RoadRot doesn't forward anything on your behalf, but you can pin the pothole publicly, get neighbours to confirm it, and use the built-in email-your-rep tool to send a direct complaint to the right elected official yourself.
Guides

Hit a pothole in St. Marys and damaged your vehicle? Read the Ontario pothole damage claim guide — deadlines, where to file, and what evidence you need. New to RoadRot? See how to report a pothole.

Common questions

Who is responsible for fixing potholes in St. Marys, Ontario?

It depends on the road. Town streets are handled by the Town of St. Marys Public Works department. Provincial highways passing through the area fall under the Ministry of Transportation Ontario (MTO). Roads at the rural fringe may be Perth County's responsibility, so if a pothole seems to be getting ignored, it's worth confirming which authority actually owns that stretch.

Does St. Marys have 311?

No, 311 is generally a feature of larger Ontario municipalities. For road or pothole complaints in St. Marys, you'll want to contact the Town of St. Marys Public Works department directly through townofstmarys.com. We'd recommend checking there for the current contact form or phone number since those details can change.

When is pothole season worst in St. Marys?

Late winter into early spring is the rough stretch, typically February through April. That's when the most freeze-thaw cycles stack up, and any water that got under the pavement during the cold months has had months to do its damage. A heavy icing event, like the one St. Marys saw over the 2025-2026 holiday period, can make the following spring especially bad.

How do I claim vehicle damage from a pothole in Ontario?

You can file a claim against the road authority responsible for that stretch, but Ontario municipalities have specific rules that make this difficult. You generally need to show the authority knew about the pothole and failed to fix it within a reasonable time. Documenting the pothole with a dated photo and a public report on something like RoadRot helps establish a record, though you'd still need to file the actual claim directly with the municipality or through your own insurer.

Does RoadRot send my pothole report to the Town of St. Marys?

No. RoadRot is a public map, not a direct line to city hall. When you drop a pin, the report is visible to anyone, and other drivers can confirm it to bump its priority. If you want to pressure a local rep, there's a built-in email tool that lets you send a complaint yourself. The goal is public visibility and giving you an easy way to act, not replacing the official reporting process.