Patching Potholes

How We Patch Potholes.

The City of Missoula spends on average 3,000 hours a year patching potholes. The Patching Fleet consists of three patch trucks.  Two trucks carry hot asphalt in a heated hopper on the back of the truck and discharge the asphalt out of the hopper onto pothole.  The two crew members then rake the asphalt to the desired grade of the road. 

The third truck requires only 1 employee, who stays in the cab during patching operations.  On the front is a nozzle that extends out over the pothole. The operator mixes rock chips and oil filling the pothole and then applies dry rock chips to the surface. The entire process is discharged through the Nozzle at the front of this truck. 

Why Do Potholes Occur?

Potholes are common to cities that experience winter weather patterns that consist of many freeze-thaw cycles. Potholes are caused by the expansion of ground water under pavement. When the water freezes it expands the asphalt and this combined with the traffic breaks down the asphalt creating a Pothole.

What Should Residents Do?

We appreciate you reporting potholes to us.

Please call 406-552-6360 or

Fill out the form to Report a Pothole.

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.