Temperatures in the 90s Sunday proved to be too much for one section of Interstate 29.
The South Dakota Highway Patrol says a section of the northbound lanes south of the Trent exit buckled around 2:00 Sunday afternoon. The buckling stretches across most of the northbound lanes.
At least five to six drivers experienced flat tires after driving over the buckled road. There was one accident. A driver in one car rear-ended another car when that driver stopped unexpectedly because of the incident. No one was hurt.
The Highway Patrol says a Department of Transportation crew is on the scene making repairs. It plans to patch up the section of road this afternoon and make permanent repairs later.
The Highway Patrol says this is the first instance of the road buckling because of the heat this summer. They advise drivers to pay attention to the road and if they see any problems, to call 911.