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Alabama OS/OW Permit Requirements

United States · ALDOT — Motor Carrier Services

Everything heavy-haul carriers need to know before moving an oversize or overweight load through Alabama: survey triggers, fees, lead times and the official permit portal.

Lead time
3 business days
Base fee
$20 single-trip OS/OW permit
Permit validity
Up to 5 days

Route survey triggers

  • Height
    Height exceeds 13'6" — oversize permit required
  • Width
    Width exceeds 8'6" — oversize permit required
  • Length
    Length exceeds 65' — oversize permit required
  • Weight
    Gross weight exceeds 80,000 lbs — overweight permit required
  • Width
    Width exceeds 16' — route survey required
  • Height
    Height exceeds 15' — route survey required

Fee notes

Flat $20 single-trip fee; annual permits $100. Superloads (>16 ft wide, >150 ft long, or >150,000 lbs GVW) priced individually with engineering review surcharges.

Official resources

Reference information last verified May 2026. Always confirm current requirements with ALDOT — Motor Carrier Services.

Surveying a route through Alabama?

RoadScope generates Alabama-compliant survey reports automatically — the right sections, certifications and documentation for ALDOT — Motor Carrier Services.

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