For more information, contact Tana Akright, Community Relations Specialist at 573-248-2490
HANNIBAL - The severe temperature changes, snow and rain have been the perfect ingredient for potholes this winter.Potholes form when moisture seeps into pavement, freezes, expands and thaws. This cycle, repeated over and over during the winter season, weakens the pavement. The weight of vehicles loosens the pavement, and over time, the surface begins to crumble and fail.MoDOT has two weapons to fight potholes, winter cold mix and summer hot mix. Road crews will repair the roadway by filling the potholes with the temporary winter mix, a combination of tar and gravel. "Unfortunately, the winter mix isn't as durable as we would like it to be, so throughout the winter season crews will continue to patch the potholes as long as the weather permits," said Mark Giessinger, MoDOT's district maintenance and traffic engineer.To permanently fill potholes, MoDOT uses an emulsified asphalt tack that bonds with the pavement in warm weather along with hot mix that is durable. It cannot be used during the winter because it cannot come into contact with water or freeze before it is applied. If the ground is wet, tack will not bond properly with the pavement.To assist crews in locating and repairing potholes motorists encounter, customers may report a pothole by visiting MoDOT's website at www.modot.org/northeast, clicking on "Report a Road Concern" on the right side of the page and completing the service request form. Customers may also call MoDOT's customer service center toll-free at 1-888-275-6636 during normal business hours.