Is your load oversize in that state?
Enter the dimensions once. We check it against the state’s published limits and tell you what you exceed, who has to escort you on which roads, whether it counts as a superload, and when you’re allowed to move.
Nothing checked yet
Pick a state and give us whatever you know. Partial numbers still work — a width and a weight is enough to get a real answer.
- Which of the state’s legal limits you exceed, and by how much
- Escorts and height poles required, split by road type
- Whether the load crosses the state’s superload threshold
- Night, weekend and holiday movement windows
Three passes over the same numbers
Legal limits
Your dimensions go against the state’s legal width, height, length, trailer length, overhang and gross weight. Exceed any one of them and a permit is required — we show the margin either way.
Escorts by road tier
Most states publish separate escort thresholds for two-lane and for four-lane or divided highways. We show both columns, the requirement that governs, and how much headroom is left before the next one triggers.
Superload and timing
Above the superload ceiling the permit goes to engineering review. We flag it, show the state’s published review time, and list the night, weekend and holiday windows that decide when you actually roll.
Crossing more than one state? Run each leg, then send us the route — one order covers every state on it at $20 per permit.
About this calculator
Is this an official permit determination?
No. It compares your dimensions against each state’s published thresholds so you know what to expect. The state issues the permit against the specific route you run, and a bridge, overpass or construction zone on that route can change the requirements. Call +1 (786) 494-6912 and a permit agent will confirm before you roll.
Why do escort requirements change by road type?
Most states write two sets of escort thresholds: one for two-lane undivided highways and one for four-lane or divided highways. The same 13'-wide load can need a front escort on a two-lane and only a rear escort on an interstate, because oncoming traffic is the risk being managed. See pilot car requirements by state for the full picture.
What makes a load a superload?
Every state sets its own trigger, usually a width, height, length or gross weight ceiling above the ordinary oversize range. Cross it and the permit goes through engineering review — bridge analysis, a route survey and often police escorts — which adds days to the lead time. The calculator shows the state’s threshold and whether you are over it.
Why isn’t KPRA calculated?
Kingpin-to-rear-axle depends on where your axles actually sit, not on overall length, so guessing it would be worse than leaving it out. Where a state ties an escort or a permit trigger to KPRA we show the published threshold and mark it as not calculated — measure yours and compare, or call us with the trailer configuration.
Does the $20 change with the size of the load?
No. Permigo charges a flat $20 service fee per state permit whether the load is an inch over or a superload. The state’s own permit fee is billed at cost on the same invoice, itemised, with nothing added.
Also useful: when you need a permit, permit cost by state, and the interactive map of all 48 states.
Numbers checked out? We’ll file it.
$20 flat per state permit, the state’s fee at cost. A permit agent answers, 7am–7pm CT, 7 days.