Lowboys, RGNs and heavy haul
Oversize load dispatch that settles permits before your phone rings
Heavy haul is the most technical card in the deck. Every load has dimensions, axle weights, permits, escorts and travel windows to settle. We work through them before we offer you the load, and every move still needs your yes. The rate con comes to you.
- 1Dimensions and weight from the shipper, in writing
- 2Axle setup checked against the bridge formula
- 3Permits for every state on the route
- 4Escorts and travel windows planned
- 5Quote with each line spelled out
- 6Your yes before anything is booked
Permits and escorts: who does what
Every state on the route issues its own oversize and overweight permit, and each has its own rules for escorts, signs, flags, lights and travel times. A load that needs one escort in one state can need two in the next, or a police escort in a city.
On most moves, the broker or shipper and the carrier agree up front who orders the permits and escorts and who pays for them. Many carriers use a permit service. Our job is to make sure that arrangement is settled, in writing on the rate confirmation, before you agree to the load.
Travel windows matter as much as the paperwork. Kansas, for example, generally keeps loads over legal length or width off the road from 30 minutes after sunset to 30 minutes before sunrise. Kansas Highway Patrol oversize FAQChecked October 2026 We plan the days of travel around those windows, so the delivery date is realistic.
The full breakdown of who handles what is in our guide to oversize permits and escorts.
Heavy haul dispatch, step by step
Dimensions in writing. Length, width, height and weight of the piece, with attachments, from the shipper, not a guess from a photo.
Trailer match. The right deck height for the height limit, the right number of axles for the weight, and ramps or a detachable neck for loading.
Route and permits. The route each state will permit, which may not be the shortest, and the permit requirements along it. Borderline loads go through the oversize load checker and the bridge formula calculator.
Escorts and timing. Escort vehicles booked for the states that need them and travel days planned around permit windows.
Securement. At least four tiedowns on wheeled or tracked equipment of 10,000 lb or more, plus restraint on attachments. 49 CFR 393.130Checked October 2026
Lowboy dispatch
A lowboy's deck sits close to the ground, which buys height for tall machines. Fixed-neck lowboys load from the rear with ramps; they are simpler and lighter. We match lowboys to tall, heavy pieces that can drive or be winched on.
RGN loads
A removable gooseneck detaches so equipment drives on from the front. That makes it the workhorse for tracked machines like excavators and dozers. Extra axles can be added on some setups to spread heavy weights.
Multi-axle setups, with jeeps or boosters added ahead of or behind the trailer, spread a very heavy load across more axles so each group stays inside what the permit allows. Tell us exactly what you can add, and we only quote moves your axles can carry legally under permit.
When a step deck is enough
Plenty of equipment fits a step deck without any permit at all. If a load can move legally on a lighter, cheaper trailer, a state won't usually permit it as oversize anyway. See our step deck dispatch for the legal side of tall freight.
Superloads and the slow lane
Past a certain size or weight, set by each state, a load becomes a superload. Superloads usually need engineering reviews of bridges on the route, route surveys, more escorts and sometimes utility crews to lift wires. Approval can take weeks, and the route can change several times before it is final.
Superload work pays for that patience, but it ties up a truck and a trailer for a long time. We tell you early when a move looks like a superload, roughly how long approvals may take, and what the waiting means for the rest of your schedule, so you can decide whether it is worth it.
Seasonal weight limits
In colder states, roads weaken as the ground thaws in late winter and spring, and many states and counties post seasonal weight restrictions on certain roads. A heavy move that is legal in October can be impossible on the same route in March. We check for seasonal restrictions on the route before we price the move.
What heavy haul shippers check
Equipment dealers, contractors and manufacturers look at your authority and safety record, liability and cargo insurance at the limits the machine's value demands, your trailer type and axle setup, and often photos of past loads. Many prefer carriers with heavy haul experience, and a damage claim on an expensive machine is hard to recover from.
We send your packet to brokers and shippers whose equipment fits your trailer and coverage. We also help you build the record that heavy haul runs on: clean deliveries, accurate arrival times and no surprises at the gate.
Heavy haul mistakes we help you avoid
- Trusting a brochure weight. Attachments, counterweights and buckets add tons. Get the real weight.
- Permitting the wrong dimensions. A permit for the wrong height or width is no permit at all.
- Missing a travel window. One state's weekend restriction can add two days to a three-day move.
- Forgetting the empty return. A long empty run home with a heavy trailer eats the profit. We plan the backhaul too.
What heavy haulers ask us before signing up
"Dispatchers don't understand permits."
Many don't. We don't offer an oversize load until the dimensions, the route and the permit and escort arrangement are settled, and we say plainly when a move is likely to become a superload.
"I already have my contractors."
Keep them. Tell us their usual days and we fill the gaps and the backhauls around them, with legal-size equipment on the way home when no heavy move fits.
"One bad load can sink me."
That is why every load needs your yes, every rate con comes to you, and every move is checked against your trailer, your coverage and your schedule before the call.
You approve every heavy haul move
We call with the piece, its dimensions and weight, the trailer it needs, the route, the permits and escorts arranged, the travel days and the price, line by line. You decide whether the move fits your rig and your schedule.
Your yes puts the rate confirmation in your hands to sign. If the dimensions or the permit arrangement on paper differ from the call, don't sign and don't load. Call the desk. A no costs nothing, and we keep searching.
Heavy haul shippers remember carriers who arrive on time and deliver without a scratch. We protect that record by never offering a load your trailer, permits or schedule can't handle.
The heavy haul fee
Heavy haul pays the same tiers as every rig: 5% of gross for one truck on an MC older than 6 months, 7% while the MC is under 6 months, and 4% per truck for fleets of 2 or more while that limited-time rate lasts.
How pass-through permit and escort costs are treated is written into your dispatch agreement before you start, so the weekly invoice holds no surprises. No setup fee, no minimums, and no charge while you wait on permits. See the full dispatch fee breakdown.
Heavy haul dispatch questions
01Who pays for permits and escorts?
That is agreed with the broker or shipper before the load is offered to you. On many heavy haul loads, permits and escorts are billed as separate lines on top of the linehaul, but terms vary. We confirm who orders them, who pays and how they appear on the rate confirmation before we call, so nothing is a surprise at the yard.
02How are heavy haul loads priced?
Usually as a linehaul for the move plus separate lines for permits, escorts and sometimes route surveys or tolls. The linehaul reflects the weight, the dimensions, the slower travel and the time windows states allow. We price the whole trip, including the empty run to the pickup, so you can judge the real return.
03Do oversize loads have travel time limits?
Yes. Most states restrict when oversize loads can move, commonly limiting travel to daylight hours and restricting weekends and holidays, and the permit spells out the rules for that state. Kansas, for example, generally bars loads over legal length or width from moving from 30 minutes after sunset to 30 minutes before sunrise.
04How much does heavy haul dispatch cost?
5% of gross for one truck on an MC older than 6 months, 7% while the MC is under 6 months, and 4% per truck for fleets of 2 or more while that limited-time rate runs. How pass-through permit and escort costs are treated is written into your agreement before you start.
05How long do oversize permits take?
It ranges from minutes to weeks. Routine oversize permits are often issued the same day through a state's online system. Superloads that need bridge reviews or route surveys can take much longer. Every state on the route issues its own permit, so the slowest state sets the start date. We build that into the plan before you commit.
Big load. Small surprises.
Send the application with your trailer type, axles and deck heights. We'll call with heavy haul moves that fit, and you approve each one.