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Illinois Oversize and Overweight Permits

Oversize Load Limits in Illinois

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  • Length: 65 feet

  • Width: 8 feet 6 inches

  • Height: 13 feet 6 inches

  • Weight: 80,000 pounds (GVW)

  • Overhang: 3 feet at the front and 3 feet at the rear

When Are Pilot Cars or Escort Vehicles Required in Illinois?

Pilot/Escort Vehicle Requirements in Illinois

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  • Length:

    • Over 110 feet: Requires a minimum of 1 pilot car; some areas may require 2 pilot cars depending on traffic density or seasonal conditions.

    • Over 145–150 feet (varies by region): Requires 3 pilot cars.

    • Over 175 feet: Police escort is mandatory.

  • Width:

    • Up to 14 feet 6 inches: Requires 1 pilot/escort vehicle.

    • Over 16 feet: Requires 2 pilot/escort vehicles.

    • Over 18 feet: Police escort is mandatory.

  • Height:

    • Up to 14 feet 6 inches: Requires 1 pilot/escort vehicle.

    • Over 16 feet: Requires 2 pilot/escort vehicles.

    • Over 18 feet: Police escort is mandatory.

  • Weight:

    • No specific escort requirements if minimum speeds are maintained.

    • For bridge moves requiring the removal of other vehicle traffic, a minimum of 2 pilot cars is required, possibly 3, with a police escort based on the situation.

  • Note:
    If two oversize dimensions are exceeded (e.g., height over 14 feet 6 inches and width over 14 feet 6 inches), an additional pilot car is required. For instance, exceeding both dimensions would necessitate 2 pilot cars.

How Much Do Trucking Permits Cost in Illinois?

Oversize Permit Costs in Illinois

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  • Single-Trip Oversize Permits: $15

Detailed Oversize Permit Pricing

  • Loads up to 70 feet long, 10 feet wide, and 14’6” high:

    • $12 for trips up to 90 miles

    • $15 for 91–180 miles

    • $18 for 181–270 miles

    • $21 for over 270 miles

  • Loads up to 85 feet long, 12 feet wide, and 14’6” high:

    • $15 for trips up to 90 miles

    • $20 for 91–180 miles

    • $25 for 181–270 miles

    • $30 for over 270 miles

  • Loads up to 100 feet long, 14 feet wide, and 15 feet high or mobile homes up to 85 feet long:

    • $25 for trips up to 90 miles

    • $30 for 91–180 miles

    • $35 for 181–270 miles

    • $40 for over 270 miles

  • Loads up to 120 feet long, 18 feet wide, and 16 feet high:

    • $30 for trips up to 90 miles

    • $40 for 91–180 miles

    • $50 for 181–270 miles

    • $60 for over 270 miles

  • Special Loads up to 120 feet long, 18 feet wide, and 16 feet high:

    • $50 for trips up to 90 miles

    • $75 for 91–180 miles

    • $100 for 181–270 miles

    • $125 for over 270 miles

Illinois Oversize and Overweight Permit Limits

Maximum Load Limits in Illinois with a Permit

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Weight Limits

  • Single Axle: 24,000 pounds

  • Tandem Axles: 48,000 pounds

  • Tridem Axles: 60,000 pounds

  • Quadem Axles: 60,000 pounds gross

  • Five Axles: 100,000 pounds

  • Six Axles: 120,000 pounds

  • Seven Axles: 120,000 pounds

  • Eight Axles: 120,000 pounds

Dimensional Limits

  • Length: Up to 145 feet

  • Width: Up to 14’6”

  • Height: Up to 15 feet

Learn More About Super Load Permits in Illinois 

When Is a Load Considered a Superload in Illinois?

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Superload Criteria

  • Weight: Exceeds 120,000 pounds gross.

  • Length: Over 145 feet.

  • Width: Exceeds 14’6”.

  • Height: Over 15’6”.

Additional Requirements

  • Axle Spacing:

    • Distance between the steer axle and the first tandem must exceed 8’1”.

    • Distance from the first axle to the trailer must not exceed 18’6”.

    • Total combined axle spacing must be at least 43’6”.

Important Notes

  • Superload permit processing times can vary significantly—expect delays.

  • Before submitting a permit request, conduct thorough research on routes, construction zones, and closures via resources like Getting Around Illinois.

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