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Idaho OS/OW Permit Requirements
United States · ITD — Division of Motor Vehicles, Commercial Vehicle Services
Everything heavy-haul carriers need to know before moving an oversize or overweight load through Idaho: 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
- HeightHeight exceeds 14' — oversize permit required (Idaho legal limit 14')
- WidthWidth exceeds 8'6" — oversize permit required
- LengthLength exceeds 75' — oversize permit required
- WeightGross weight exceeds 80,000 lbs — overweight permit required
- WidthWidth exceeds 16' — route survey required
- HeightHeight exceeds 16' — route survey required
- WeightGross weight exceeds 200,000 lbs — ITD engineering analysis required
Fee notes
Base $10 per trip + overweight mileage fee ($0.05–$0.18/mile depending on excess weight). Annual $50 base. Superload engineering review starts at $500.
Official resources
- Official permit portal
- Official fee schedule
- Trucking Idaho — ITD Permits
- Permits4Idaho Online System
- Idaho OS/OW Permit Information
- Idaho Permit Application
Reference information last verified May 2026. Always confirm current requirements with ITD — Division of Motor Vehicles, Commercial Vehicle Services.
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