Home / Oversize Permit Checker
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Enter the piece. Get the trailer, the verdict, and which states on your route need permits. Built by a heavy haul driver turned broker, because the first question on every call is the same: is this thing going to need permits, and how bad is it?
What it does
This is the tool I wish shippers had before they called. You enter the piece you need moved and, optionally, where it is going. It tells you four things:
It is an estimate, and it says so. The states change their rules, the oversize-approved route is not the same as the fastest route, and axle spacing does things to weight limits that a web form cannot fully model. But it is a far better starting point than a mileage calculator, and it will tell you in ten seconds whether you are looking at a routine flatbed move or a project.
Instant answer
Punch in the piece you need moved. We will tell you whether it runs legal, what trailer it belongs on, and what to expect before you ever pick up the phone. Add origin and destination and we will map the route and break down permits state by state.
Estimates based on standard federal and state limits as of June 2026. States change fees and rules, and exact requirements depend on route and axle configuration, so check with your broker for current information. Permits, routing, and escorts are exactly the work we handle for you. Routing by OSRM, geocoding © OpenStreetMap contributors.
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The Vector Freight Brief: flatbed and heavy haul rates, capacity, and permit news in three minutes, every Tuesday. Written by a working heavy haul freight agent, not a content team.
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It is an educational estimate built on standard federal limits and a table of per-state rules as of June 2026. It tells you whether a load is legal, permit, permit-plus-escort, or superload territory, and which states on your route will need permits. Final requirements depend on the exact route, axle configuration, and current state rules, which is the work we do when we book the load.
Across the lower 48, a load that is 8 feet 6 inches wide or less, 13 feet 6 inches tall or less (14 feet in many western states), within trailer length limits, and 80,000 lb gross or less generally runs without oversize or overweight permits. Every state has exceptions by route.
Enter the machine or piece. The checker adds trailer deck height to estimate travel height and picks a trailer based on weight and dimensions. If you already know the loaded height, enter that as the height and the estimate will run high, which is the safe direction.
It geocodes the origin and destination, pulls a driving route from OpenStreetMap routing, and intersects it with state boundaries. The route is a general highway route, not the oversize-approved route, which is a different thing and part of what a permit determines.
A load whose dimensions or weight exceed what a state will issue under a routine permit, usually requiring engineering review, route surveys, bridge analysis, and multiple escorts. Thresholds vary by state. Transformers, large vessels, and very heavy mining and energy equipment typically land here.
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