Alaska OSOW Regulations (Alaska DOT&PF)

Legal Dimensions (No Permit Required)

• Width: 8'6"
• Height: 13'6"
• Length: 53'
• Gross vehicle weight: 80,000 lbs

Maximum Permitted Weights

• Gross maximum: 150,000 lbs (depending on route, distance, and bridges)
• Annual overweight permit: Up to 125% of legal tire loading, axle (group), or gross weight

Permit Types and Costs

Single Trip Permits

Single Move (Oversize Only):

• Base processing charge: $35
• Plus surcharges:
  • Width exceeding 10'6" up to 16': $20
  • Height exceeding 16' up to 16'6": $20
  • Width exceeding 16': $30
  • Height exceeding 16'6": $30

Single Move (Overweight Only):

• Base processing charge: $35
• Plus surcharges: $20 for gross weight exceeding 150,000 lbs (plus additional surcharges)

Single Move (Oversize + Overweight):

• Base processing charge: $60
• Plus applicable surcharges

Annual Permits

One-Year Overweight Permit:

• Cost: $500.00
• Maximum weight: 125% of legal tire loading, axle (group), or gross weight

One-Year Overwidth Permit:

• Cost: $500.00

Extended Period Permits

Duration: Up to 12 months

• Cost range: $75 to $1,000
• Varies based on:
  • Number of months
  • Whether oversize and/or overweight
  • Up to 125% of legal limits

Escort Vehicle Requirements

When Escorts Are Required

Over Width

• Over 10'6" up to 12': 1 pilot car
• Over 12' up to 14': 1 front pilot car AND 1 rear pilot car
• Over 18' up to 22': 4 pilot cars or truck escort vehicles
• Over 22'+ (rolling road closure): 5 pilot cars or truck escort vehicles

Over Length

• Greater than 85': 1 pilot car
• Greater than 100': 1 front pilot car AND 1 rear pilot car
• Greater than 150': 3 pilot cars or truck escorts

Escort Vehicle Equipment Requirements

Signs

• "OVERSIZE", "WIDE LOAD", or "LONG LOAD" signs required

Lighting

• Roof-mounted amber high-intensity rotating, flashing, oscillating, or strobe type beacon
• Visibility: Minimum 500 feet

Operating Times

Standard Hours

• Daylight only: 1/2 hour before sunrise to 1/2 hour after sunset
• Monday through Saturday noon
• Sunday travel: NOT allowed for oversize/overweight loads

Extended Travel Hours

Loads not exceeding:

• 10'6" wide
• 16' high
• 85' long

May travel:

• Monday through Sunday
• During daylight hours (1/2 hour before sunrise to 1/2 hour after sunset)

Holiday Restrictions

Permitted oversized and overweight vehicles are PROHIBITED from moving during:

• Memorial Day holiday period
• July 4th holiday period
• Labor Day holiday period

Contact Information

• Website: https://dot.alaska.gov/
• State: Alaska
• Agency: Alaska Department of Transportation and Public Facilities (Alaska DOT&PF)
• Unit: MS/CVC Commercial Vehicle Customer Service Center

Regulatory References

• Alaska Department of Transportation and Public Facilities
• Alaska Administrative Permit Manual: Oversize and Overweight Permits
• https://dot.alaska.gov/mscve/pages/permits.shtml
• https://jjkellercompliancenetwork.com/regsense/oversize-and-overweight-movements-alaska

Last Updated: 2025-11-11