Potholes in Mercier, QC

Population 14,626 · Quebec

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

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Why Mercier gets potholes

Mercier sits in the Greater Montreal climate zone, where freeze-thaw cycles hit not just in spring and fall but sometimes through winter itself. Environment Canada recorded at least 17 freeze-thaw days in the Montreal area in January 2026 alone, and each one is a discrete damage event: water works into a crack, freezes and expands, thaws, and leaves a slightly bigger gap for the next cycle. Province-wide, the ground freezes to depths of 1.2 to 3 metres for more than four months of the year, and Quebec's own transport ministry has noted that freeze-thaw frequency is increasing, meaning the repair backlog keeps growing faster than budgets can keep up.

How to report potholes in Mercier

Mercier runs its own single-window service called the Guichet unique de Mercier rather than a regional 311 system. You can reach it at 450 691-6090, option 1 during city office hours; for urgent public-road issues like significant road subsidence, the same number has voicemail instructions available around the clock. If the pothole is on a provincial route, that's a separate file with the Ministère des Transports et de la Mobilité durable du Québec (MTMD), and Mercier's own Info-Travaux page at ville.mercier.qc.ca/info-travaux lists which roads fall under provincial jurisdiction. RoadRot works alongside those channels: you drop a pin on the public map, other drivers can confirm the report, and you can use the built-in email tool to send a message directly to your municipal or provincial representative putting the report on record.
Guides

Hit a pothole in Mercier and damaged your vehicle? Read the Quebec 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 Mercier?

It depends on the road. Municipal streets in Mercier are the responsibility of the Ville de Mercier's public works department, reached through the Guichet unique at 450 691-6090. Provincial routes on Mercier's territory fall under the MTMD, and the city's Info-Travaux page lists which roads those are so you know who to call.

Does Mercier have a 311 service for pothole reports?

No, Mercier uses its own Guichet unique de Mercier rather than a regional 311 line. Call 450 691-6090 and select option 1 during office hours. For urgent road hazards, the same number has after-hours voicemail instructions.

When is pothole season worst in Mercier?

Late winter into early spring is typically the worst stretch, when weeks of freeze-thaw cycles have had months to widen cracks and the road surface starts to break apart as temperatures swing above and below zero. Quebec's Ministry of Transport formally designates a Spring Thaw period each year when roads become significantly more fragile and heavy-vehicle load restrictions kick in, which tells you something about just how hard that season is on pavement.

How do I make a vehicle damage claim for a pothole in Quebec?

In Quebec, pothole damage claims against a municipality generally go through the city's legal or clerk's department, and you typically need to document the damage quickly and in writing. You'd want photos of the pothole, photos of your vehicle damage, and a record of when and where it happened. Consulting Quebec's consumer protection resources or a legal clinic is a good next step since the rules around municipal liability have specific notice requirements.

Does RoadRot report potholes to the Ville de Mercier automatically?

No, and it's worth being clear about that. RoadRot is a public crowdsourced map where residents pin and confirm pothole reports so there's a visible, shareable record. The email-your-rep tool lets you send a message directly to your local representative, but you're the one hitting send. The value is public visibility and giving you a quick way to put pressure on the right people.

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