Freight Guide

How to Ship Heavy Construction Equipment

Whether you're moving a drill rig, a crawler crane, an excavator, or a full job site's worth of precast — the process has more moving parts than most project managers expect. This guide covers every step, from measuring your load to clearing your last state line.

📋 15-minute read ✓ Updated June 2026 ✓ By Perpetual Enterprise LLC — Licensed Freight Brokerage

In This Guide

  1. Step 1: Know Your Load — Dimensions and Weight
  2. Step 2: Choose the Right Trailer Type
  3. Step 3: Oversize and Overweight Permits
  4. Step 4: Preparing Your Equipment for Transport
  5. Step 5: Getting Quotes and Choosing a Broker
  6. Common Equipment Transport Reference
  7. Mistakes to Avoid
  8. Frequently Asked Questions

Step 1: Know Your Load — Dimensions and Weight

Before you call a broker or carrier, you need accurate numbers. Most equipment shipping problems — wrong trailer, surprise permit costs, last-minute delays — trace back to inaccurate measurements at the quoting stage.

Get these four numbers for your equipment in transport configuration (not operating configuration):

Pro Tip

Use the manufacturer's spec sheet for dimensions. Measure twice, because permits are issued for specific dimensions — any discrepancy at a weigh station means fines and potential impoundment. Field-measured machines often differ by 2–4 inches from spec, which can push a load into a different permit class.

Federal Dimension and Weight Thresholds

These are the federal limits that apply on interstate highways. Exceeding any of these without permits is illegal in all 48 states:

Measurement Federal Legal Limit Exceeding This Requires
Gross vehicle weight80,000 lbsOverweight permit
Single axle weight20,000 lbsOverweight permit
Tandem axle weight34,000 lbsOverweight permit
Width8 ft 6 inOversize permit
Height13 ft 6 inOversize permit
Overall lengthVaries by state (typically 65–80 ft)Oversize permit
Important

Height on the permit means height with the load on the trailer. A 10-foot excavator on a lowboy trailer with a 2-foot deck height = 12 feet total. Always add deck height to your equipment height.

Step 2: Choose the Right Trailer Type

Matching your equipment to the right trailer type is the single most important logistics decision you'll make. The wrong trailer means the equipment won't fit, permits won't be issued correctly, or you'll pay for unnecessary capacity.

Trailer Type Deck Height Typical Capacity Best For
Flatbed (48' / 53') ~5 ft Up to 48,000 lbs Steel beams, pipe, machinery, precast panels under 8'6" wide
Step Deck / Drop Deck Upper: ~5 ft / Lower: ~3.5 ft Up to 48,000 lbs Equipment 10–11 ft tall; needs lower deck than flatbed provides
RGN — Removable Gooseneck ~2–2.5 ft 40,000–150,000+ lbs (multi-axle) Wheeled/tracked equipment that drives on: excavators, bulldozers, drill rigs
Lowboy / Double Drop ~1.5–2 ft 40,000–80,000 lbs Very tall equipment; cranes, large excavators, vertical machinery
Multi-Axle Heavy Haul (9, 11, 13-axle) Varies 80,000–600,000+ lbs Superloads, mining equipment, large transformers, major components
Double Drop Extendable ~1.5–2 ft Up to 80,000 lbs Long and heavy equipment; extended reach cranes, large beams

The RGN Explained — When Your Equipment Has to Drive On

RGN stands for Removable Gooseneck. The front section of the trailer — the gooseneck — physically detaches, dropping the front to ground level and creating a loading ramp. This is essential for any equipment that:

Most tracked construction equipment — excavators, bulldozers, pile driving rigs, ABI Mobilrams, Bauer BG-series drill rigs, Liebherr LRBs — ships on RGN trailers. The broker arranges the right axle configuration based on weight distribution requirements.

When You Need Multi-Axle Heavy Haul

If your equipment weighs more than 80,000 lbs gross, you need more axles to spread weight and stay within per-axle limits. Here's the rough math:

Above approximately 200,000 lbs, loads are classified as superloads in most states and require additional engineering review, bridge analysis, and longer permit lead times.

Not Sure Which Trailer You Need?

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Step 3: Oversize and Overweight Permits

Oversize and overweight (OS/OW) permits are issued by individual states — which means a load crossing six states needs six separate permits. Each state has its own rules on routing, travel times, and escort requirements. Managing this is one of the core things a good freight broker handles for you.

Types of Permits

Pilot Cars and Escorts

Pilot cars — the escort vehicles that travel ahead of or behind oversize loads — are required under specific conditions that vary by state. Common thresholds:

Your freight broker should handle pilot car coordination as part of the move. Reputable brokers include this in the quote rather than billing it as a surprise after the fact.

Permit Lead Times

Permit TypeTypical Lead TimeNotes
Standard oversize (non-superload)1–3 business daysMost states offer online permitting
Complex multi-state route3–5 business daysRouting and clearance verification required
Superload (150,000–400,000 lbs)1–3 weeksBridge analysis, route survey, LE escort coordination
Extreme superload (400,000+ lbs)3–8 weeksFull engineering study, special routing

Step 4: Preparing Your Equipment for Transport

Improperly prepared equipment causes damaged loads, failed DOT inspections, and liability disputes. Here's what to do before your carrier arrives:

Pro Tip

If your equipment requires crane loading, coordinate the crane at origin and destination before the truck arrives. Carrier waiting time is billed by the hour — typically $75–150/hour — and a missing crane at delivery can add significant cost.

Step 5: Getting Quotes and Choosing a Broker

Once you have your dimensions, weight, origin, destination, and date needed, you're ready to get quotes. Here's what to have ready:

What to Look for in a Freight Broker

Not all freight brokers are created equal when it comes to heavy haul. Ask these questions before committing:

Perpetual LLC: Licensed, 24/7, All-In Quotes

We're a licensed and bonded nationwide freight brokerage. 13-axle heavy haul to sprinter van. All 48 states. Permits included in the quote, no hidden fees, same-day response.

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Common Equipment Transport Reference

Here's a quick reference for how common heavy construction equipment typically ships:

EquipmentTypical TrailerPermit Likely?Notes
Excavator (20–50T)RGN / LowboyUsually yesBoom must be removed or folded; tracks add width
Excavator (50T+)Multi-axle RGNYes — oversize/overweightMay require superload permit
Bulldozer (D6–D10)RGN / LowboyOften yes (width)Blade must be removed or secured
Crawler Crane (any size)Multi-axle RGN + additional trailers for componentsYes — multiple permitsBoom, counterweights, and carbody ship separately
Drill Rig (ABI, Bauer, Liebherr)RGN / Multi-axle RGNYesMast retracted; may require escort
Pile DriverRGN or LowboyUsually yesHammer ships separately if too heavy
Mobile Crane (100–500T)Multi-axle + component trailersYes — superload likelyPlan 2–4 weeks for superload permitting
Generator / TransformerRGN or Lowboy (heavy haul)Depends on weightCenter of gravity matters; rigging plan required
Precast Bridge BeamsLowboy or ExtendableUsually yes (length)AASHTO/FIB beams often exceed 100–150 ft
Steel Sheet Pile BundlesFlatbed or Step DeckSometimes (width/length)Bundle width and overhang drive permit need
Wind Turbine BladesSpecialized extendable (blade runner)Yes — superload commonRear steering axle required; specialized move

Mistakes to Avoid

Frequently Asked Questions

The most common trailers are flatbed (48/53 ft), step deck, RGN (removable gooseneck), lowboy/double drop, and multi-axle heavy haul trailers. The right choice depends on your equipment's dimensions and weight. Equipment wider than 8'6", taller than 13'6", or heavier than 80,000 lbs gross requires oversize or overweight permits in every state the shipment crosses.
In most cases, yes. Any shipment exceeding 8'6" wide, 13'6" tall, approximately 65 feet overall length, or 80,000 lbs gross weight requires oversize or overweight permits in each state it passes through. Loads over approximately 150,000–200,000 lbs are classified as superloads and require engineering review and special routing.
Standard oversize permits typically take 1–3 business days. Superload permits (loads over 150,000–200,000 lbs) can take 1–3 weeks due to required route surveys and engineering review. Plan ahead — a missed delivery caused by permit delays is expensive and avoidable with early booking.
Costs vary widely based on equipment weight, dimensions, distance, permit complexity, and whether escorts are required. Standard flatbed loads typically run $2–6 per loaded mile. Heavy haul with permits and escorts ranges from $8–25+ per mile. Contact us at info@perpetual.llc for a same-day all-in quote.
You need: origin and destination (city, state, zip and any site access notes), equipment make and model, transport dimensions (length, width, height in transport configuration — not operating), weight from the spec sheet, date needed, and whether the equipment is self-propelled or must be craned onto the trailer.
RGN stands for Removable Gooseneck. The front section detaches to create a loading ramp so wheeled or tracked equipment can drive on and off under its own power — or be positioned by crane onto the lowered deck. RGN trailers are essential for excavators, bulldozers, drill rigs, pile drivers, and cranes that cannot be safely craned onto a standard flatbed deck.
Yes. Perpetual Enterprise LLC is a licensed and bonded freight brokerage serving all 48 contiguous states. We handle everything from the carrier selection and dispatch to permitting, pilot car coordination, and law enforcement escort scheduling. Same-day quotes for any load type. Contact us at info@perpetual.llc or request a quote online.

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