(KMOV.com) --MoDOT is warning drivers to keep a close eye on road surfaces. The department cautioned Tuesday that some roads are buckling and blowing up.
Engineers say a “blow-up” refers to the pavement pushing upward. Sand and gravel get into the seams in the pavement in the winter.
The concrete slab then has no room to expand and in the sustained summer heat, the pavement weakens.
MoDOT says 2012 year was the worst year to date for blow-ups, and it is already seeing them in western Missouri.