Just east of Montrose, I-70 enters Cumberland County, where the Interstate has one interchange with IL 130 (Haughton Highway) at Greenup, where the highway crosses the Embarras River.
Just east of Montrose, I-70 joins Cumberland County, featuring a connection with IL 130 (Haughton Highway) at Greenup, where the highway crosses the Embarras River as part of its route.