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South Dakota OS/OW Permit Requirements

United States · SDDOT — Motor Carrier Services, Permit Section

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

Lead time
3 business days
Base fee
$20 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 18' — route survey required
  • Height
    Height exceeds 15' — route survey required
  • Weight
    Gross weight exceeds 200,000 lbs — SDDOT special haul permit required

Fee notes

Single-trip $20 base + $0.04–$0.10/mile overweight. Annual $90. Superload engineering review at SDDOT cost.

Official resources

Reference information last verified May 2026. Always confirm current requirements with SDDOT — Motor Carrier Services, Permit Section.

Surveying a route through South Dakota?

RoadScope generates South Dakota-compliant survey reports automatically — the right sections, certifications and documentation for SDDOT — Motor Carrier Services, Permit Section.

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