The Illinois Department of Transportation (IDOT) is authorized by the Illinois Vehicle Code (625 ILCS 5/15-301) and the 2024 Draft Permit Office Policy Manual with respect to highways under its jurisdiction that IDOT may, in their discretion, upon application and good cause being shown therefore, issue special permits authorizing the applicant to operate or move a vehicle or combination of vehicles of a size or weight of vehicle or load exceeding the maximum specified in this Act or otherwise not in conformity with this Act upon any highway under the jurisdiction of the state of Illinois. Oftentimes, in order to complete your move, roads NOT authorized to be permitted by IDOT may be necessary. In all such cases involving local jurisdiction roads, permittees MUST obtain permission from appropriate local authorities prior to movement.

ADDITIONAL FORMS AND DOCUMENTS

View the Special Vehicle Movement Permit Provisions Form - OPER 993 - PDF  NOTE: The OPER 993 form shall be carried in the Vehicle to which the IDOT Oversize/Overweight (OS/OW) Permit applies.

View the Legal Dimensions and Weight Form - OPER 753 - PDF

View the Loaded Overwidth ONLY Implements of Husbandry Transport Rules Form - OPER 2279 - PDF

View the Updated 2024 Overweight Divisible Load Booklet 

OS/OW RESTRICTION INFORMATION

Getting Around Illinois Obstruction and Restrictions map

Permanent Restriction List

Temporary Restriction List

Emergency Road Closures

Night Restriction List

Legal Weight Structures on Marked State Routes

Ton Structures on Marked State Routes

Legal Weight Structures on Unmarked State Routes

Ton Structures on Unmarked State Routes

ASSISTANCE

Permit Service Companies  Note: This list is comprised of information provided to IDOT from the various permit services listed.  There is no guarantee that this information is accurate.  

Superload Fee Estimator

Find a Fuel Stop

Truck parking

Apply for a USDOT Number

Illinois Legal Size and Weight Booklet

Law Enforcement Officers only - Apply for CVIEW and ITAP Law Enforcement Logons 

HINT: If any of the links above do not open when you Left Click on them, try to Right Click on the link and select to open in another tab or window.  If this does not work contact the OSOW Permit office at DOT.PermitOffice@Illinois.gov.