Illinois Department of TransportationThis item identifies a posted structure on the State system of highways on which only legally configured vehicles can travel. This information is used by the trucking industry to safely move vehicles with overweight permits around these structures, since they are not allowed to cross these posted structures legally. This item can be obtained from http://www.gettingaroundillinois.com/ in the Obstructions and Restrictions Map, or a listing is available for marked and unmarked routes under Resources - Oversize/Overweight at: http://www.idot.illinois.gov/doing-business/permits/Oversize-and-Overweight-Permits/index For details: Structure Information and Procedures (SIP manual) The SIP manual has been developed through a cooperative effort within the Department between the Office of Highways Project Implementation and the Office of Planning and Programming. IDOT and its Divisions and Offices are committed to maintaining the structure information system at a high level. This commitment is not only to satisfy NBIS requirements, but also to provide an excellent working tool in managing the bridges and other structures as they relate to the overall transportation system in Illinois. In the interest of the traveling public's safety and convenience, this commitment remains a high priority for the Department.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/bd18f4f2cd194b538ee267570cd5809c_11engIllinois DOT Open Data PortalPublicStructures Posted to Restrict Overweight Loads (Legal Loads Only) [Illinois]Web servicesIllinoisLast Modified: 2019-12-12