Multi-state OSOW permit calculator
Calculate Oversize Load Permit Costs Across Every State in Your Route
The only oversize and overweight permit cost calculator that plans your entire multi-state route. Get wide load permit costs, escort requirements, and travel restrictions for every state—built from official DOT data.
Built for carriers and brokers
How the OSOW Permit Calculator Works
Three steps. Every state. Real costs.
Enter load dimensions & weight
Width, height, length, weight, and overhangs. Accepts any format—feet, inches, or mixed.
Map your route across states
Enter origin and destination. We detect every state in your path using real-time GeoJSON analysis.
Get per-state permit costs & escorts
Instant results: permit fees, escort counts, superload flags, travel restrictions, and total trip cost.
Built for Carriers, Brokers, and Heavy Haul Professionals
Everything you need to quote oversize loads with precision.
Multi-state route calculator
Enter origin and destination—get permit requirements for every state in your path, not just one at a time.
Escort & pilot car requirements
Know exactly how many escorts each state requires based on your load dimensions. No guessing, no surprises.
Official DOT-sourced data
Every threshold, fee, and restriction verified against official state DOT publications. Not scraped, not guessed.
Route visualization
See your route on an interactive map with state boundaries highlighted and per-state mileage calculated.
Travel time restrictions
Curfews, holiday blackouts, day/night rules, weekend restrictions—all surfaced per state so you can plan your schedule.
Total cost breakdowns
Per-state permit fees, overweight surcharges, and estimated escort costs aggregated into one clear total for your bid.
How OSOWloads Compares
The only oversize permit calculator that handles your entire route.
| Feature | OSOWloads | oversize.io | heavyhaul.net |
|---|---|---|---|
| Multi-state route calculator | |||
| Actual permit cost estimates | |||
| Escort / pilot car requirements | |||
| Escort cost estimates | |||
| Route visualization | |||
| Real-time state detection | |||
| DOT-verified data | |||
| Total trip cost breakdown |
Simple, Transparent Pricing
One platform for permits, escorts, and route planning. All 48 contiguous states included.
Solo
- Per-state permit cost breakdown
- Escort & pilot car requirements
- Route visualization with state mileage
- DOT-verified thresholds & fees
- Bid builder with cost estimation
- Calculation history & dashboard
Team
- Everything in Solo, plus:
- Shared team calculation quota
- 3 user seats (admin + 2)
- Escort & pilot car requirements
- Route visualization with state mileage
- Bid builder with cost estimation
Enterprise
- Everything in Team, plus:
- Unlimited user seats
- Priority support
- Per-state permit cost breakdown
- Full bid builder with escort costs
- DOT-verified thresholds & fees
All plans include
Oversize Load Regulations by State
Permit costs, overweight surcharges, and escort requirements for 48 contiguous states.
Frequently Asked Questions
How much does an oversize load permit cost?
Costs vary by state, typically $15–$200 per single-trip permit. Overweight permits cost more based on excess weight. OSOWloads calculates exact costs for every state in your route so you can bid with confidence.
How wide can a trailer be without a permit?
The federal legal width limit is 8’6″ (102 inches). Anything wider requires an oversize permit in every state you travel through. Height and length limits vary by state.
When do you need a wide load permit?
You need a wide load permit when your load exceeds the state’s legal dimensions for width, height, or length. Each state sets different thresholds—what’s legal in one state may require a permit in the next.
Can you pass an oversize load?
Yes, you can carefully pass an oversize load when it is safe to do so. Oversize loads are required to pull over when safe if they are holding up traffic. Always follow escort vehicle signals and signs.
How many escorts do you need for an oversize load?
Escort requirements vary by state and load size. A load that needs zero escorts in one state may require two or more in the next. OSOWloads shows you exact escort requirements for every state in your route.
What does OSOW mean in trucking?
OSOW stands for Oversize/Overweight. It refers to loads that exceed a state’s legal limits for width, height, length, or weight and require special permits to travel on public roads.
Ready to Calculate Your Permit Costs?
Stop guessing. Enter your load, map your route, and get real per-state costs in seconds.