Multi-state OSOW permit calculator
Oversize and Overweight Permit Costs for Every State in Your Route
Model the real cost of a load across all 48 contiguous states and 13 Canadian provinces and territories.
700+ state DOT documents and statutes·Built by people who've eaten the cost of a bad quote
How the OSOW Calculator Works
Enter load dimensions
Width, height, length, weight, and overhangs. Built for speed.
Map your route across states
Enter origin and destination, optionally include a stop along the way or force a route through a state.
Per-state breakdown
Instant results: permit fees, regulations, escort counts/costs, superloads, surveys, police, and more.
Crunch the numbers in the bid builder
Highly customizable: dial in your bid and save/export a PDF for your customer-ready quote.
What OSOWloads Handles for Carriers and Brokers
Escort/pilot car rules, overweight fee math, superload flags, travel restrictions, road tiers. Per state, not averaged.
Escort/pilot car logic that runs like a real trip
Per-state counts are the start. Miles/day ties into retainers and hotels. We also catch the spots where you need to carry them through.
19 overweight fee models
OW fees are flat rates only sometimes. Per-mile, per-pound, axle brackets, etc. Every state's method is wired in.
Superload, police & survey flags
Granular details on these. We also warn when a state won't commit: police escorts shown as case-by-case.
Travel time restrictions
Holidays, day/night curfews, alerts, special commodities rules/exceptions. Details matter.
Road tier control
Escort triggers can change when you leave the interstate. Set the road tier PER state and model what road classification you'll actually be on.
Customer-ready PDF quotes
Turn the bid into a branded PDF: your logo, disclaimer, and set certain costs as pass-throughs. Show your work, send a professional quote.
Advanced Features
Fast inputs
- Skip what you don’t needWeight and length stay tucked away until your load actually needs them.
- GVW logic for brokersEnter the load weight; axles and truck/trailer weight are predicted for you.
- CAD, meters, kmCanadian? Model the whole thing in your own units and currency.
- Simple modeRun our defaults for a fast answer. Great for anything short of a superload.
Simple, Transparent Pricing
Free
- Full calculator — same as paid plans
- No credit card required
- Credit packs available anytime
- Resets fresh each month
Solo
- Per-state permits, fees & escort counts
- Superload, police & survey detection
- Smart escort smoothing logic
- State-specific road tier selection
- Bid builder with save & PDF export
- Route map with per-state mileage
- Dedicated configurable OW pop up
Team
- Everything in Solo, plus:
- Shared team calculation pool
- 3 user seats (admin + 2)
Enterprise
- Everything in Team, plus:
- Unlimited user seats
All plans include
Comparing options? See how OSOWloads compares to oversize.io
Oversize Load Regulations by State
Permit costs, overweight surcharges, and escort requirements for 48 contiguous states.
Oversize Load Regulations by Province
Permit costs, overweight surcharges, and escort requirements for all 13 provinces and territories.
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 what's 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.