Multi-state OSOW permit calculator
Calculate Oversize and Overweight Load Costs Across Every State in Your Route
Model the true costs of a shipment in a few clicks. Built from official DOT data.
Built for carriers and brokers
How the OSOW Calculator Works
Enter load dimensions
Width, height, length, weight, and overhangs.
Map your route across states
Enter origin and destination. Even include a stop along the way or force a route through a state.
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.
Route visualization
See your route on an interactive map with state boundaries highlighted and per-state mileage calculated.
Travel time restrictions
Holidays, day/night rules, weekend restrictions.
Total cost breakdowns
Per-state permit fees, overweight surcharges, and estimated escort costs aggregated into one clear total for your bid.
Simple, Transparent Pricing
Solo
Then $19/mo
- Per-state permit & fee breakdown
- Escort requirements & smart pricing
- Route visualization with state mileage
- DOT-verified thresholds & fees
- Bid builder with cost estimation
- Calculation history & dashboard
Team
Then $59/mo
- Everything in Solo, plus:
- Shared team calculation pool
- 3 user seats (admin + 2)
Enterprise
Then $119/mo
- Everything in Team, plus:
- Unlimited user seats
All plans include
Oversize Load Regulations by State
Permit costs, overweight surcharges, and escort requirements for 48 contiguous states.
Canada coming soon
Frequently Asked Questions
Does the calculator figure annual or single trip costs?
Single trip, there is too much commodity specific nuance to programmatically write for. You can check our annual permit by state information page.
How wide can a load be without a permit?
The federal legal width limit is 8'6" (102 inches). Anything wider requires an oversize permit, check our state regulations page for a helpful map when escorts are first needed.
Should I post on the directory?
Duh, it's free advertising. From a broker/shipper perspective there's not many places to find quality OSOW carriers. Our goal is for you to get calls directly and keep loads off the board. Check out the directory.
What's the deal with superloads?
Not all states call them superloads, but all states have certain thresholds that require strict review and cost extra money. Police, superload, route survey — plan for significantly extra lead time and costs.
How many escorts do you need for an oversize load?
Escort requirements vary by state, load size, and the road type! A load that needs zero escorts in one state may require two or more in the next. We display as much info as possible to help plan and model costs.
What is OSOW and whats the point of this site?
OSOW stands for Oversize/Overweight in trucking. It comes with a steep learning curve and we aim to make it easier for carriers and brokers to step into with more confidence.
Ready to Calculate Your Permit Costs?
Stop guessing. Enter your load, map your route, and get real per-state costs in seconds.