A tractor-trailer overturned about 10:40 a.m. Monday at the intersection of Illinois 177 and Green Mount Road in Belleville.
Belleville firefighters and police were handling the crash, which had both lanes of Green Mount Road closed as of 11:40 a.m. with a large tow truck's arrival. Other traffic was congested at the intersection.
The driver was out of the truck when firefighters arrived. He was taken to a local hospital.