Permits Canada obtains oversize and overweight permits for Illinois for trucks and loads over the legal width, height, length or weight.
Illinois legal dimensions and weight
A truck and load within these limits needs no oversize or overweight permit in Illinois.
| Width | 8 ft 6 in |
|---|---|
| Height | 13 ft 6 in |
| Length | 53 ft trailer |
| Gross weight | 80,000 lbs (5+ axles) |
Illinois oversize permit rules
| Permits offered | Single trip, round trip, repeated moves, limited continuous operation |
|---|---|
| Escorts | 1 escort over 14 ft 6 in wide, high or 110 ft long; 2 when two of those are exceeded or over 18 ft high; 3 over 16 ft wide or 145 ft long; State Police over 18 ft wide or 200 ft long |
| Travel times | Up to 12 ft wide 24/7 (extra escort at night); up to 14 ft 6 in wide sunrise-sunset 7 days; up to 16 ft weekdays plus Saturday morning; larger loads 9 a.m.-3 p.m. weekdays; holiday limits posted on ITAP |
IDOT permits cover only state-maintained highways; local roads and the Illinois Tollway need separate permission.
Getting your permit with Permits Canada
- Send us the online oversize / overweight application with your truck, trailer, load dimensions and route.
- A permit agent applies for your Illinois permit and checks the route conditions.
- Your permit arrives by email with its travel conditions. Oversize and overweight permits can take longer, since the authorities review each application.
Our fee is $40 to $50 CAD per permit, plus the Illinois state fee, which depends on the dimensions, weight and route.
Also need temporary registration or fuel tax coverage? See Illinois trip & fuel permits.
Illinois oversize permit questions
When is an oversize permit required in Illinois?
When the truck or load exceeds the Illinois legal limits: width 8 ft 6 in, height 13 ft 6 in, length 53 ft trailer.
What is the legal gross weight in Illinois?
The legal gross weight in Illinois is 80,000 lbs (5+ axles). A heavier truck needs an overweight permit.
When are pilot or escort vehicles required in Illinois?
1 escort over 14 ft 6 in wide, high or 110 ft long; 2 when two of those are exceeded or over 18 ft high; 3 over 16 ft wide or 145 ft long; State Police over 18 ft wide or 200 ft long.
Can oversize loads travel at night or on weekends in Illinois?
Up to 12 ft wide 24/7 (extra escort at night); up to 14 ft 6 in wide sunrise-sunset 7 days; up to 16 ft weekdays plus Saturday morning; larger loads 9 a.m.-3 p.m. weekdays; holiday limits posted on ITAP.
How much does an Illinois oversize permit cost?
Permits Canada charges $40 to $50 CAD per permit, plus the Illinois state fee, which depends on the dimensions, weight and route.
Last reviewed October 2026. Rules change; your permit agent confirms them for each move. All provinces and states