Overweight/Overdimension Vehicle Permits

A permit is necessary for the movement of vehicles exceeding weight and size limits on the Illinois Tollway.

This page details those weight and size limitations, permit fees and restrictions on movements.

All vehicles must have a state Illinois Department of Transportation (IDOT) permit number prior to obtaining a Tollway permit. Illinois Tollway requirements are consistent with the rules and regulations of IDOT.

Time of day and holiday travel restrictions apply to some vehicles. Learn more.

To Request online access to the Over Dimension/Overweight Vehicle Permit System

Fill out this form and return it to us via email. Or email us the following information: 

  • Company name
  • Billing address (City, state and ZIP Code)
  • User first and last name
  • User contact information (phone, fax, email)

For more information

Email Us

Or call 630-241-6800 ext. 4847


Online Permit Requests

Over Dimension Vehicle Permit System


Overweight Limitations and Fees

Legal Weight Limit - No Permit Required

Single axles:

All single axles not more than 20,000 pounds.


Axles in tandem:

2-axle tandems (axles spacing 4 feet to 8 feet) not more than 34,000 pounds.
3-axle tandems (outside axles 8 feet to 10 feet) not more than 42,000 pounds.

Gross Vehicle Weight

Number of Axles Maximum Weight Minimum Outside
Axle Spacing
2 36,000 pounds 10 feet
3 60,000 pounds 32 feet
4 80,000 pounds 57 feet
5 80,000 pounds 51 feet
6 80,000 pounds 43 feet

Permit Required - Routine Issue (No special analysis required)

Single axles:

Any single axle over 20,000 pounds but under 25,000 pounds.


Axles in tandem:

2-axle tandems (axles spacing 4 feet to 8 feet) more than 34,000 pounds but less than 48,000 pounds.
3-axle tandems (outside axles 8 feet to 10 feet) more than 42,000 pounds but less than 60,000 pounds.

Gross Vehicle Weight

Number of Axles Maximum Weight Minimum Outside
Axle Spacing
2 36,001 pounds to 48,000 pounds 10 feet
3 68,000 pounds 14 feet
4 76,000 pounds 36 feet
5 80,001 pounds to 100,000 pounds 40 feet
6 80,001 pounds to 120,000 pounds 44 feet

Overdimension Limitations and Fees

Over-width, over-length and over-height permits can be obtained online or by calling 630-241-6800 extension 4847. Truck permits are no longer issued at the plazas.

Not exceeding 8 feet 6 inches wide Permit not required
More than 8 feet 6 inches to 12 feet wide $15.00



  • Wide load lanes are posted at all toll plazas.


Vehicles exceeding 100 feet or loads exceeding 80 feet in length $15.00


Vehicles exceeding 13 feet 6 inches but not exceeding 14 feet 6 inches $15.00


Vehicles not within the weight and axle spacings limits for a routine issue permit are designated a superload and require a special analysis. Please contact the Tollway a minimum of three business days prior to the movement of a superload.

The Illinois Tollway owns and is responsible for bridges that cross the Tollway. The Illinois Tollway and Illinois Department of Transportation (IDOT) participate in a cooperative permitting process for IDOT routes that cross the Tollway. Permits issued by the Illinois Department of Transportation (IDOT) for over-dimension, over-weight and superloads that cross the Tollway are valid permits and authorized by the Illinois Tollway.

Vehicles are typically designated a Superload if:

  • The width is greater than 12 feet.
  • The length is greater than 145 feet.
  • The height is greater than 14 feet 6 inches.
  • Any axle exceeds 25,000 pounds.
  • The gross weight is greater than 120,000 pounds.
  • Any tractor tandem is greater than 48,000 pounds.
  • Any trailer tandem is greater than 60,000 pounds.
  • Any trailer has 2 or more tandems.

Equipment such as cranes, drill rigs and concrete pumps must be analyzed on an individual basis. Please allow extra time for an engineering review. Superload permits are not issued at toll booths.



2-axle tandems (4 feet to 8 feet)

3-axle tandems (8 feet)

3-axle tandems (9 feet)

3-axle tandems (10 feet)

Gross Weight 5 or more axles



34,001 pounds to 44,200 pounds

42,001 pounds to 54,600 pounds

42,501 pounds to 55,250 pounds43,501 pounds to 56,550 pounds80,001 pounds 104,000 pounds



44,201 pounds to 48,000 pounds

54,601 pounds to 60,000 pounds

55,251 pounds to 60,000 pounds56,551 pounds to 60,000 pounds104,001 pounds to 120,000 pounds

Speed Limits for Trucks on the Illinois Tollway

Commercial vehicles weighing more than four tons are permitted to drive 65 mph on the western segments of the Jane Addams Memorial Tollway (I-90) and the Reagan Memorial Tollway (I-88), as well as other designated interstates in Illinois. In addition, motor homes, campers and trailers are allowed to drive the posted 65 mph speed limit in these areas. Existing 55 mph speed limits will continue to apply to trucks traveling on Illinois interstates in the metropolitan Chicago area, including Cook, DuPage, Kane, Will, Lake and McHenry counties.

Restrictions on Movements for Overdimension Permits

  1. Monday through Saturday - one half hour before sunrise to one half hour after sunset
  2. Sunday - one half hour before sunrise to noon
  3. Overdimension vehicles shall not be operated on the Tollway on the following holidays:
    New Year's Day Memorial Day Independence Day
    Labor Day Thanksgiving Day Christmas Day