It is the season for pavement repair.
Please contact MoDOT with the location of potholes you spot on Missouri highways. The sooner MoDOT knows about them, the sooner they can repair them.
You can call MoDOT or fill out an e-form:http://www.modot.org/asp/repair.htm
Your city and county want to know about potholes in their areas, too. So contact them about problems on your local streets.