A 37-year-old woman from Riverton and her eight-year-old daughter died Tuesday morning when their vehicle crashed into the rear of a semi-tractor-trailer on Interstate 55 near Sixth Street in Springfield.
Sangamon County Coroner Jim Allmon said they were pronounced dead at the scene.
Their identities have not been released.
The crash forced the closure of southbound Interstate 55 for several hours.
Illinois State Police are investigating.
