The Illinois Department of Transportation (IDOT) takes care of State Highways as well as Federal Highways in Illinois. Roads under their jurisdiction within Will County include: Interstates 55, 57, 80 and U.S. Routes 6, 30, 45, 52 and IL Routes 1, 7, 43, 50, 53, 59, 102, 113, 126, 129, 171, 394.
The Illinois Department of Transportation can be contacted via phone at 217-782-7820 (847-705-4401 for the collar county area) or by visiting their website.