South Carolina State Permit Resource

Staying current with state permits is crucial for truckers to ensure legal compliance and avoid costly fines or delays. These permits help streamline operations, ensuring that truckers can transport goods smoothly across state lines without regulatory issues.

Maximum Allowable Sizes and Weights by Permit:

  1. Overall Length:
      • Non-Divisible Loads: Up to 125 feet.
      • Mobile Homes: Up to 110 feet.
      • Structural Material: Over 80 feet requires a permit.
  2. Overhang:
      • Maximum rear overhang: 15 feet (for trailers less than 48 feet), 10 feet (for 48 or 53-foot trailers).
      • Front overhang: Maximum of 3 feet.
  3. Overall Height:
      • Loads must be at least 3 inches shorter than the lowest overhead structure.
      • A route survey is required for loads over 16 feet in height.
  4. Overall Width:
      • Mobile Homes & Non-Divisible Loads: Maximum width of 16 feet.
  5. Gross Weights:
    • Two axle single unit vehicle     40,000 lbs.                                                                             
    • Three axle single unit vehicle   50,000 lbs.                                                                                                       
    • Four or more axle single unit vehicle   65,000 lbs.                                                                                             
    • Combination of vehicles with three axles    55,000 lbs.                                                                                        
    • Combination of vehicles with four axles    70,000 lbs.                                                                                         
    • Combination of vehicles with five axles      90,000 lbs                   
    • Combination of vehicles with six axles      110,000 lbs.      
    • Combination of vehicles with seven axles     130,000 lbs.    
  • Gross Tandem Weights:                                                                                            
    • Single axle    20,000 lbs.                                                                                                                                         
    • Tandem axle 40,000 lbs.                                                                    
    • Tridem or Quad axle 60,000 lbs.     

  **A Quad axle greater than 60,000 lbs. has to be reviewed by engineering on the requested route of travel** 

Types of Permits:

Single Trip Permit:

    • Valid for 7 days for a one-time move.
    • Route-specific, and vehicle information is required.
    • Fee: $30

Multiple Trip Permit:

    • Allows non-divisible loads, mobile homes, or containerized cargo up to 100,000 lbs on 5 or more axles.
    • Valid for 1 year.
    • Weight limits differ based on the vehicle and route.
    • Fee: $100

Superload Permit:

    • Required for loads over 130,000 lbs or exceeding specific axle weights.
    • Additional fees and structural analyses may be needed.
    • Fee: $100

South Carolina Trip and Fuel (IRP / IFTA) Permits:

    • Trip Permit: Fee is $15, valid for 72 hours.
    • Fuel Permit: Fee is $15, valid for 10 days.

Contact Us

Please note that DOT Compliance Group does not provide State Permit Registration. However, we offer a variety of essential compliance services to keep your business running smoothly, including Clearinghouse Registration, Unified Carrier Registration (UCR), Biennial Updates, and much more. If you have any questions about our services or need assistance, feel free to reach out to us at 972-232-2218. We’re here to help with all your compliance needs.