Illinois Department of TransportationThis item indicates the agency or agencies having jurisdictional responsibility for a highway. This may be different than the agency having maintenance responsibility. For joint Jurisdictional Responsibility, combine the agency codes listing the lower number first (i.e., Joint County and Federal Agency enter '35'). Code(Jur_Type) Jurisdictional Responsibility 01 Illinois Division of Highways 02 Other State Agency 03 County 04 Municipality 05 Federal Agency 06 Adjacent County 07 Private (Including Toll Authorities) 08 Adjacent Township or Road District 09 Township or Road DistrictArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/7e61fe2e0ed14012a5495eef2c5fd3e3_0engIllinois DOT Open Data PortalPublicIllinois Jurisdiction [Illinois]Web servicesIllinoisLast Modified: 2025-12-09