The freezing and thawing have been brutal on streets opening up large potholes. Iowa D-O-T Winter operations administrator, Craig Bargfrede says state highways have not been immune from the problem.
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He says water from melting snow is the culprit as the temperature drops at night and causes it to expand.
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Bargfrede says another problem caused by the melting snow often is not seen until its too late.
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Bargfrede says the rain and melting snow have caused water to cover many roadways and you should always be careful in flooding situations too.