All county roads, except marked Class III Truck Routes have a 72,000 pound weight limit for 5 axles. Between February 1 and May 1 of each year, the weight limits are 70% of the normal weight limits.
Class III Truck Routes have an 80,000 pound limit for 5 axles and no seasonal restrictions. They are:
- N. Valley Road, CH 15, West of IL Rt 40 to Stark County
- Tax School Road CH 12, Between IL Rt 26 and IL Rt. 89
- Toluca Road CH 4, Between IL Rt 251 and Toluca
- Yankee Lane, Between IL Rt. 17 and Peoria County
Any load in excess of the limits must obtain a permit from the County Highway Department: