Michigan State Police Sgt. Chris Pascoe said one rig traveling eastbound overturned in Washtenaw County. The Detroit Free Press reported that accident was followed soon after by another truck overturning while westbound a short distance away.
Pascoe said the accidents caused significant delays and additional delays were expected throughout the day.
"It's a mess," he said. "It's just a very weird coincidence that they rolled over nearly in the same spot -- one eastbound, one westbound.
"It's flat and straight and people like to fall asleep out there."
No other vehicles were involved and neither of the unidentified truck drivers was injured, Pascoe said.