Warmer temperatures, moisture and weakening pavement… those three factors add up to form the perfect storm for the pavement “blow-ups” that become common across mid-Missouri over the summer months. Pavement “blow-ups” occur when the roadway surface expands at a crack or joint where moisture has seeped in. That crack weakens the pavement and the heat causes the pavement to buckle and warp. Drivers who come across a blow-up to use extra caution, slow down, and call MoDOT to report the issue. Crews monitor state routes during the summer months for possible problem areas. MoDot has a toll-free number for reporting pavement blow-ups….1-888-ASK-MO-DOT.