Stewart was found guilty of the offenses at a jury trial in March. Judge Joe Jackson presided over the jury trial and pronounced the sentence.
"We are pleased with the outcome at trial and with the sentence handed down by the court," said Massac County State's Attorney Patrick Windhorst. "Based on the requirements of the law for sentencing on these charges and the severity of the crime, the sentence is appropriate."
Windhorst represented the People during the trial.
Stewart was represented by Marilou Shaner. The case was investigated by the Metropolis Police Department.
Stewart received 25 years on each count of aggravated criminal sexual assault and 15 years for home invasion.
Each count was ordered to be served consecutively. Stewart will be required to serve 85 percent of his sentence.
Aggravated criminal sexual assault is a Class X felony.
Each count of aggravated criminal sexual assault carried a possible penalty of 16 to 40 years in the Illinois Department of Corrections.
Home invasion is also a Class X felony and carried a possible penalty of six to 30 years in the Illinois Department of Corrections.