A rolled-over semi truck could snarl northbound traffic on a ramp leading from Interstate 55 to Interstate 294 Monday morning in the southwest suburbs.
The truck was speeding on the ramp when it rolled over about 5:30 a.m., Illinois State Police said. No one was injured.
At 6:15 a.m., police encouraged drivers to use an alternate route to access the interstate because crews could take between one and two hours to clear the accident.