The accident happened around 7:30 p.m. near Gilson, in the 900 block of Illinois Route 97.
The Knox County Sheriff's Office said the victim is 71-year-old Sammy G. Marksity.
His wife, Karen Marksity, was flown to OSF St. Francis Medical Center in Peoria.
No word on her condition at this time.
The accident remains under investigation.