More pavement buckles reported in southern Wisconsin Friday amid record May heat

PORTAGE, Wis. — Crews repaired multiple pavement buckles in southern Wisconsin Friday evening as a record-breaking streak of May heat continues.

A pavement buckle was reported around 2:15 p.m. on southbound U.S. Highway 51 at mile marker 95.1 in the Portage area. All lanes reopened by around 7:45 p.m., according to the Wisconsin Department of Transportation.

Buckles were reported around 3:45 p.m. on eastbound U.S. Highway 12 near South Gasser Road south of Baraboo and on State Highway 33 at County Highway B in the Beaver Dam area. Both scenes reopened around 6:20 p.m.

Pavement buckles also caused headaches for Wisconsin drivers on Thursday, including on Highway 12 near Lake Delton. Highway 12 in Sauk County has experienced numerous pavement buckles in recent years, which Barry Paye, WisDOT’s director of technical services, told News 3 Now could be in part due to the type of aggregate used in the concrete used to build the road.

RELATED: Pavement buckling causes traffic delays in parts of southern Wisconsin Thursday

“It’s a local type of quartzite that tends to have very expansive properties, thermal expansion,” he said. “The way I quickly explain it is like siding on your house; you hear it shrink in the winter and crack and in the summer, it expands. The Baraboo quartzite tends to have very expansive properties, so that was the locally available material to build that road and that was what’s in there.”

Download the First Warn Weather app to stay up-to-date on the latest weather conditions in your area.