Illinois oversize permit office
Illinois Department of Transportation, Bureau of Operations, Permit Office (Oversize/Overweight Permits). Call (217) 785-1477 (Springfield area or out of state); (800) 252-8636 (Illinois numbers outside Springfield area), Permits can be ordered online 24 hours a day 7 days a week; permits that are not auto-issued are processed from 7:00 a.m. until 4:30 p.m., Monday through Friday, excluding holidays. Central time.
From Illinois's own pages, checked 2026-10-24. Fees and rules change: the state's page is the last word.
- How to get one
- Order every oversize/overweight permit online in ITAP; the Permit Office (217-785-1477 ext 1) or a permit service company can help.
- Single trip fee
- Legal weight, up to 10' wide, 14'6" high, 70' long: $12 for 0 to 90 miles, $15 for 91 to 180 miles, $18 for 181 to 270 miles, $21 over 270 miles (Table 1 Overdimension Fee Categories, category a). Bigger loads and overweight loads use higher categories in Tables 1 and 2.Source
- Legal without a permit
- Width 8'6" · Height 13'6" · Length 53' semitrailer (Class I, Class II and non-designated highways) · Weight 20,000 lbs single axle; 34,000 lbs tandem axle; gross by the Federal Bridge Formula (OPER 753 Table II)Source
- How fast
- Many permits are issued automatically once you finish and pay; the rest are handled by the office during weekday hours.Source
When you can move
- Daylight
- Loads over 12 ft wide, 13 ft 6 in high or 115 ft long move from half an hour before sunrise to half an hour after sunset. Loads within those sizes (and not over practical maximum weight) may also move only in that window, but 7 days a week.Source
- At night
- No night moves for oversize loads unless the permit allows it (emergencies or special moves such as Cook County expressway work); overweight loads of legal size may move 24 hours a day.
- Weekends
- Loads over 12 ft wide, 13 ft 6 in high or 115 ft long: Monday to Friday, plus Saturday until noon; no Sunday travel. Smaller oversize loads may move 7 days a week.
- Holidays
- New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day. From noon the day before the holiday (or holiday weekend) until sunrise the day after; applies to every permit load over a legal dimension. Next datesSource