The Minnesota Department of Transportation is warning motorists traveling this weekend that temperatures are expected to approach 100 degrees in many parts of the state this weekend, which could cause pavement buckling on roads.

Pavement buckling occurs when the air temperature changes from moderate to extreme heat. When roads are constructed, they are cut into segments creating a space for expansion and contraction. During extreme heat, there is no more room for expansion and pavement can buckle or blow up, especially on older, weaker pavement. To learn more about this process, click here: http://www.dot.state.mn.us/pavementbuckle/