Agencies
Services
Oversize and Overweight Permits
IDOT is authorized by the Illinois Vehicle Code (625 ILCS 5/15 – 301) and the 92 Illinois Administrative Code 554, Sub-chapter F, with respect to highways under its jurisdiction that IDOT may, at 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. An Oversize/Overweight permit is required, when a vehicle or load exceeds legal sizes and weights, and is to be moved upon or across a highway for which the state is responsible. Permit applications are reviewed for bridge tolerances, construction zones, height clearance and several other safety concerns. The new Illinois Transportation Automated Permit system (ITAP) system allows customers to go online and apply. Most permits are immediately issued. 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.
Please visit our Photo Gallery of Oversize/Overweight permitted moves across Illinois.
Weigh Stations
Truck
Interstate commerce is an integral part of Illinois. It helps in the buying and selling of goods and services, which are often transported to another state or country. This type of activity improves the economic competitiveness of Illinois industries in the global marketplace. In addition to global competitiveness, IDOT cares about the safety of all motorists and travelers. State and federal safety regulations require drivers of commercial motor vehicles, including large trucks and motor coaches, to meet certain minimum standards when operating on Illinois interstates and highways. IDOT issues commercial vehicle registration and oversize and overweight permits to ensure the safety of truckers and motorists alike, to protect and preserve our highway infrastructure, and to accommodate commercial operations as conveniently as possible.
Additional Contacts
IDOT OSOW Permit Office Contact Information
Illinois Department of Transportation
Bureau of Operations, Permit Office
2300 South Dirksen Parkway
Springfield, Illinois 62764
Telephone: (217) 785-1477, if calling from Springfield area or out of state; (800) 252-8636 if calling from an Illinois number but outside of Springfield area
Email: dot.permitoffice@illinois.gov
Other IDOT Contacts
- Hazardous Materials (217) 785-1181
- Safety Inspections (217) 785-1181
- Traffic Safety (217) 782-4518
- Rest Stops (217) 782-2984
To Obtain a Local Permit
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.