All oversize loads entering the Village of Oak Park must conform to the requirements set by the Illinois Department of Transportation (IDOT) and the Oak Park Public Works Department.

In general, any vehicle over 12 feet in width, 14 feet 6 inches in height, and within the Class 7 weight category (over 73,280 lbs) should obtain an oversize load permit from the Oak Park Public Works Department.

Additionally, loads exceeding 18 feet in width, 19 feet in height, or weighing over 150,000 lbs require special permits and may be subject to additional regulations and routing restrictions.

In Oak Park, escort vehicles are required for oversize loads exceeding 16 feet in width or 14 feet 6 inches in height during daylight hours.

For loads wider than 20 feet or taller than 18 feet, a police escort is mandatory, and arrangements must be made through the Oak Park Police Department at least 48 hours in advance. The cost of the police escort is $75 per hour, with a minimum of 2 hours.

To apply for an oversize load permit in Oak Park, submit an application through the Illinois Department of Transportation's (IDOT) Permit Portal or contact the Oak Park Public Works Department at (708) 358-5700.

Applicants must provide detailed information about the load, including dimensions, weight, and routing. Additional documentation, such as proof of insurance and a detailed route plan, may also be required.

Oversize loads are restricted on weekdays during peak hours (7-9 am and 4-6 pm) on major routes such as Harlem Avenue (IL-43) and Madison Street.

Seasonal restrictions may apply during extreme weather conditions, such as heavy snowfall or flooding, and it's the permit holder's responsibility to check with the Oak Park Public Works Department for up-to-date information.

Certain neighborhoods, such as those with narrow streets or low-hanging utility wires, may be restricted to oversize loads; a detailed route plan must be submitted for approval.

The base permit fee for oversize loads in Oak Park is $50, with additional fees based on the size and weight of the load.

For loads exceeding 150,000 lbs, an additional fee of $0.05 per pound over the threshold applies. Complex routing or special requirements may incur additional charges.