Why Do Potholes Occur?
Potholes are especially common in areas that experience winter weather conditions that consist of many freeze-thaw cycles. Potholes are caused by the expansion of water under the pavement. When the water freezes, it expands the asphalt, and as the ice melts, the asphalt contracts. The expanding and contracting, combined with vehicles driving over the area, breaks down the asphalt to create a pothole.
What Should Residents Do?
Please let us know about the ones you see. Complete the Report a Pothole form or call 406-552-6360.
Did You Know?
The City of Missoula has an asphalt recycler. This machine recycles used asphalt from construction debris and turns it into asphalt patching material. During winter months when asphalt plants are closed, this recycler allows our crews to use hot asphalt to patch potholes.