Record-breaking summer heat is taking a toll on Louisiana highways, with extreme temperatures causing sections of pavement to buckle, crack and lift unexpectedly, creating hazardous driving conditions across the state.
The DeSoto Parish Sheriff’s Office has warned motorists to remain alert for damaged roadways as prolonged triple-digit heat indexes continue to stress concrete and asphalt surfaces. Officials say pavement can expand during periods of intense heat, occasionally causing sudden upheavals or “blow-ups” that create dangerous obstacles for drivers.
The Louisiana Department of Transportation and Development (DOTD) is also monitoring road conditions statewide and dispatching crews to repair heat-related pavement failures as they are reported. Officials are asking motorists to slow down, avoid sudden maneuvers, and report hazardous roadway conditions to local authorities or DOTD when it is safe to do so.
According to transportation officials, pavement blow-ups occur when prolonged extreme temperatures cause concrete slabs to expand. If there isn’t enough room for the concrete to expand, pressure builds until the roadway suddenly buckles, sometimes lifting several inches in a matter of moments. While these failures are relatively uncommon, they become more likely during extended periods of excessive heat.
Motorists are encouraged to:
Reduce speed during extreme heat, especially on concrete highways.
Watch for uneven pavement or sudden changes in the roadway.
Leave extra following distance to allow time to react.
Avoid swerving abruptly if a damaged section of roadway is encountered.
Report dangerous road conditions to local law enforcement or DOTD.
With heat index values exceeding 100 degrees across much of North Louisiana this week, officials say roadway conditions can
change quickly during the hottest part of the day.
The Sheriff’s Office reminds residents that staying attentive behind the wheel is especially important during periods of extreme heat, as both drivers and infrastructure are under added stress.
Transportation officials will continue monitoring Louisiana roadways and making repairs as needed while the current stretch of dangerous summer heat persists.