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Washington Oversize Permits

Below is some important oversize permit regulation information for the state of Washington.

In Washington, you need an oversize permit if your vehicle exceeds 8’6″ wide, 14’0″ high, 75′ long or 105,500 pounds. 

If you need to apply for a Washington oversize permit, call (888) 737-6483 now or contact us. 

LEGAL DIMENSIONS & WEIGHTS​
Legal Width:8'6
Legal Height:14'0
Legal Length:
  • Single unit
    • 40’0
  • Semi-trailer
    • 53’0
    • 56’0 with permit (Automobiles only)
  • Doubles
    • 60’0
  • Autotransporters
    • 65’0
  • Truck-trailer
    • 75’0
  • Other combinations
    • 75’0
Legal Overhang Front:
  • 3’0 front
    • Included in overall length
Legal Overhang Rear: 15'0 from center of last axle
Legal Trailer Length: 53'0
Legal Weight Gross:105,500 lbs.
Legal Weight Single:20,000 lbs.
Legal Weight Tandem:34,000 lbs.
Legal Weight Tridem: 42,000 lbs.
Legal Weight Doubles:34,000 lbs.
Legal Weight Triples: 42,000 lbs.
PERMIT FEES​
Permit Fee/Legal Weight:$10.00
Permit Fee/Overweight:

Based on Mileage and Weight Class fee

  • Less than 100,000 lbs.
    • See Overweight Fee Schedule chart
      below
    • Multiply price per mile by number of
      miles
  • Greater than 100,000 lbs.
    • $4.25 + $0.50 for every 5,000 lbs. over 
      100,000 lbs.
      • Total=price per mile
        • Multiply price per mile by the number of miles.

 

Refer to Overweight Fee Chart

Mileage Fees:Depends on weight
Annual Fees:

Annual Fees:

  • 14’0 wide max.
  • 15’0 high max.
    • $20.00 monthly
    • $240.00 per year

Weight:

  • 125,000 lbs. max.
    • $30.00 monthly
    • $360.00 per year

  • Single Trailer
    • $10.00 monthly
    • $100.00 per year
  • Double Trailer
    • $10.00 monthly
    • $100.00 per year
  • Fixed Load
    • 3 axles
      • $70.00 monthly
    • 4 axles
      • $90.00 monthly
  • Non-Divisible Load
    • $10.00 / Length monthly
    • $20.00 / Height & Width monthly
  • Manufactured Housing
    • $30.00 monthly
    • $360.00 per year
  • Sealed Container (State Route 509)
    • $100.00 monthly
    • $1,000.00 per year
  • Collection Truck
    • 2  axles
      • $252.00 per year
    • 3 axles
      • $336.00 per year
  • Empty Apple Bins
    • $20.00 monthly
    • $240.00 per year
  • Hay Bales
    • $20.00 monthly
    • $240.00 per year
  • Tow Truck
    • Class B $75.00 per year
    • Class C $150.00 per year
  • Tarping System
    • $20.00 monthly
    • $240.00 per year
Important Links:

Overweight Fee Schedule

AGENCY GENERAL INFO​
Phone:360-704-6340
Fax:360-704-6391
Email:[email protected]
Website:

https://wsdot.wa.gov/

Hours of Operation:7:00 am - 5:00 pm Pacific
Permit Valid For: 3 Days

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