State designated Class I, II, and III routes are shown on IDOT's "Designated State Truck Route System" map. Height and weight limitations on Local Roads and Streets are listed on IDOT's "Overheight and Overweight Permit Routes" map, Tables I and III. You can request a copy of both maps by calling IDOT at 217-782-6271.
The following are the height and weight limitations on Local Roads and Streets. Any vehicle exceeding these amounts requires a permit from the Will County Dept of Highways. Permits may be issued for an overheight and overweight load providing it consists of one object that cannot be reasonably dismantled or disassembled.
| Width |
Height |
Length
Single
Vehicle |
Length
Tractor
Semitrailer |
Length
Tractor-
Semitrailer-
Trailer |
| 8'-6" |
13'-6" |
42' |
55' |
60' |
| Single Axle (LB) |
Tandem Axle (LB) |
Gross Weight (LB) |
| 20,000 |
34,000 |
80,000 |