Illinois Oversize Permit: Rules & Guide
How to Get an Oversize Permit in Illinois: Rules, Limits & Permit Guide
Illinois plays a major role in the national freight network, especially through the Chicago corridor. If your vehicle or load exceeds legal limits, you’ll need a valid Illinois oversize permit to travel through the state legally. This guide explains everything you need to know — from size thresholds to travel restrictions and how to apply. Many carriers also secure trip and fuel permits for interstate moves to stay fully compliant. Want to skip the paperwork? Let OSOWPermits.com take care of your Illinois oversize permit so you can keep your business moving.
Legal Dimensions
- Width
- 8.5 feet
- Height
- 13.5 feet
- Length
- 75 feet
Weight Limits
- Gross
- 80,000 lbs
- Per Axle Notes
- Varies by axle configuration and bridge spacing
Example Scenario
Frequently Asked Questions
Does Illinois offer annual permits?
Yes. Annual permits are available for specific vehicles or load types and are valid on designated routes.
Is a local permit needed for travel inside Chicago?
Yes. Chicago and some surrounding counties require separate local permits for oversize loads. Be sure to coordinate both state and local approvals.
Can I travel at night with a permit?
Most oversize permits limit travel to daylight hours unless otherwise specified by IDOT.