The Matthiessen/Vermilion River Area south entrance of Matthiessen State Park is located just two miles south of Starved Rock State Park on Route 178.

From the North, West, and East: From Route 80, take Exit 81 (Route 178) south to Utica, IL; then travel five miles south on Rt 178.

From the South: From Route 39, take Exit 51 (Route 71) east to Route 178.