 Pick up yours today. Must be at least 21 to purchase. As the temperature continues to climb, motorists may encounter a disruption known as road buckling. Louisiana DOTD spokesperson Erin Buchanan says road buckling is a normal thing that happens to concrete roads in heat. Debris and moisture fall into the joints of concrete roads over time, and when it gets hot... Those concrete panels expand, and all that in those joints causes the panels to buckle at the joint, and it basically creates kind of a triangle...