Annual Freeze-Thaw Cycle Impacting Local Roads

As winter temperatures fluctuate, the 2026 freeze-thaw cycle has begun taking its toll on Windsor roadways, leading to an increase in potholes, cracks, and other road defects.

Public Works crews are out working to address these issues.

What causes potholes? 

The freeze-thaw cycle occurs when temperatures alternate between sub-zero cold, which causes water to freeze in small cracks and gaps in road surfaces, and the warm-ups that follow. As water freezes, it expands, putting pressure on the road material. When temperatures rise and the ice melts, the pressure is released, leaving behind weakened surfaces and often leading to cracks or potholes. This cycle is a normal part of winter and can repeat multiple times throughout the colder months, exacerbating the damage.

“This winter’s prolonged cold has affected our roads differently than in recent years. Extended sub‑zero temperatures cause pavement to shrink and crack, while damage builds beneath the surface even if potholes aren’t immediately visible. When temperatures rise, those cracks allow water in and the ground underneath weakens, leading to potholes forming quickly and often all at once,” said Stacey McGuire, Executive Director of Operations. “City crews are actively monitoring conditions and responding as temperatures allow, with more permanent repairs planned once weather conditions stabilize.”

Public Works crews are currently prioritizing high-traffic areas and more dangerous intersections where road damage could pose an increased risk to drivers.

How can road damage be reported? 

While Public Works Operations continues to monitor and repair potholes across the City, they also urge residents to report road pot hole damage they encounter by contacting 311. 

For more information, check out our video on the impact of freeze-thaw conditions on local roadways.