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Louisiana OS/OW Permit Requirements

United States · LADOTD — Motor Carrier Safety Unit, Permit Section

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

Lead time
3 business days
Base fee
$10 single-trip + mileage
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 and escort required
  • Height
    Height exceeds 15' — route survey required
  • Weight
    Gross weight exceeds 160,000 lbs — Louisiana industrial haul permit required

Fee notes

Single-trip $10 base + $0.05/mile overweight. Annual $300. Superload (>16 ft wide, >250,000 lbs) requires LADOTD engineering review at cost.

Official resources

Reference information last verified May 2026. Always confirm current requirements with LADOTD — Motor Carrier Safety Unit, Permit Section.

Surveying a route through Louisiana?

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