Motorists asked to report buckling pavement caused by the heat
State transportation officials say the risk of pavement buckling will continue to be high at least through Friday.
Authorities said the 100-degree heat caused buckling Thursday on Interstate 39 in Columbia County, Highway 12 near Wisconsin Dells, and on a city street in West Bend.
The state Department of Transportation said there were 17 cases of pavement buckling on the Fourth of July. It took an average of two to three hours to repair each spot.
Experts say pavement expands during hot weather and sections of pavement can burst if they push too hard against each other.
The DOT asks motorists to call 911 if they see buckled pavement. Motorists can check for buckling on the DOT's Travel Information System by calling 511 or going online at 501.gov.
The heat index reached 116 near Mauston Thursday, with actual temperatures above 100 as far north as Wisconsin Rapids.
More highs in the 90s and 100s are expected Friday before things cool off starting Friday night in northern Wisconsin and Saturday in the south.
It was already bit cooler Friday morning in the far north. It got down to 54 degrees at Tomahawk at 6 a.m., but in the south, it was 82 in Monroe and 81 in Mineral Point.