Missouri Department of Transportation crews are focusing on pothole repair through April. Motorists should watch out for MoDOT crews making the repairs, slow down and move over a lane to give them room to work. Crews started working to address the pesky potholes as soon as there was a break in the weather. MoDOT will have about 300 pothole patching crews statewide working to make roads safer. In 2019, MoDOT patched about 730,000 potholes, spending $17 million on pothole patching. 

MoDOT maintains 34,000 miles of road, including interstates, U.S. and Missouri routes, and lettered routes.

Potholes form when temperatures warm up during the day but continue to be cold at night. The rain and snow from winter leave moisture that seeps into cracks and joints in the pavement. Frozen water in cracks and under the surface of the road causes the pavement to bulge and bend. Then when ice melts, the pavement contracts and leaves gaps or voids in the surface under the pavement. When cars and trucks drive over the bulging pavement, it weakens the road, eventually causing chunks of pavement or asphalt to pop out, creating potholes.

Short-term repairs are made using a cold asphalt mix with a priority to fill the deepest potholes first. The long-term fix, a hot asphalt mix, isn’t effective until temperatures remain warm for a prolonged period. 

Potholes are also a sign of an aging transportation system. Missouri’s budget for road repairs is largely financed by a 17-cent per gallon gas tax that has remained the same since 1996. Many roads that would benefit from resurfacing can only be patched because of limited resources, according to a MoDOT news release.

Safety tips:

• Don’t brake directly over a pothole as this can cause more damage.

• When driving over the pothole, hold the steering wheel firmly to avoid losing control.

• Use caution when driving over a puddle of water because it might be a pothole in hiding.

• Make sure tires are properly inflated. Properly inflated ties hold up better against potholes than tires that have too much or too little air.

Report a pothole:

• Call the 24/7 Customer Service Center at (888) ASK-MODOT ((888) 275-6636).

• Use the “Report a Road Concern” form on the web at modot.org.

• Use a smartphone or tablet with a mobile-friendly form at modot.org/roadconcern.

· Potholes on city streets or subdivisions should be reported to local city or county maintenance.


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