Shipping a Large Articulated Dump Truck (45-Ton Class): What You Need to Know

Typical Dimensions and Weights: Large ADT Class

Large articulated dump trucks in the 40–50 ton payload class share broadly similar dimensions, though exact specs vary by manufacturer and model year. The Caterpillar 740 is a common reference point:

These machines are wide (over 11 ft), tall (over 12 ft), and heavy (over 72,000 lbs empty) — all three dimensions exceed standard permit thresholds, making oversize/overweight permits mandatory in every state.

Permit Requirements for Large ADT Transport

Because large ADTs exceed federal thresholds in width, height, and weight simultaneously, they require oversize/overweight permits in every state they transit. Key permit considerations:

• Width: At 11+ ft wide, these machines exceed the 8.5 ft standard width limit. Most states require a front escort vehicle for loads over 12 ft wide and front and rear escorts for loads over 14 ft wide. The ADT body width of 11–11.5 ft typically requires a front escort only, but confirm with your state permit office.
• Height: At 12–13 ft tall, these machines approach or exceed the 13.5 ft standard height limit when loaded on a lowboy trailer. The combined height (trailer deck + machine height) must be calculated carefully. A standard lowboy deck sits approximately 18–20 inches off the ground, so a 12 ft 3 in machine on a lowboy results in a total height of approximately 13 ft 9 in to 14 ft 1 in — requiring a height permit and route survey for low bridges.
• Weight: At 72,000–82,000 lbs empty, the machine alone approaches the 80,000 lb GVW limit. Adding the tractor and trailer weight means the total combination will significantly exceed 80,000 lbs, requiring an overweight permit and axle spread planning.

Trailer Selection for Large ADTs

Large articulated dump trucks require a heavy-duty RGN (Removable Gooseneck) lowboy trailer for transport. Key trailer requirements:

• Deck length: A minimum 48–55 ft deck is needed to accommodate the ADT's 35–38 ft length with room for the gooseneck and rear overhang.
• Weight capacity: The trailer must be rated for at least 80,000–100,000 lbs to handle the machine weight plus safety margin.
• Axle configuration: Multi-axle trailers (3–4 axle) are typically required to distribute the machine weight within per-axle limits. Some states require additional axles for loads over 80,000 lbs.
• RGN design: The removable gooseneck allows the ADT to drive onto the trailer under its own power, which is the standard loading method for these machines.

Loading and Securing a Large ADT

Loading a large articulated dump truck requires a level, firm surface and an experienced operator:

• The RGN gooseneck is detached and the trailer deck is lowered to ground level (or near-ground level) to create a ramp angle the ADT can safely drive up.
• The ADT is driven onto the trailer under its own power, centered on the deck, and positioned so the weight is distributed evenly across the trailer axles.
• The dump body must be lowered completely and the tailgate secured before transport.
• The articulation joint must be locked or secured to prevent the machine from articulating during transport — most ADTs have a transport lock pin for this purpose.
• Tie-down chains are attached to the machine's designated tie-down points (typically four points minimum, per DOT securement regulations). Chain grade and working load limit must meet or exceed the machine weight divided by the number of chains.
• The RGN gooseneck is reattached and secured before departure.

Common Issues and How to Avoid Them

• Height miscalculation: Always measure the machine height with the dump body fully lowered and confirm the combined height (machine + trailer deck) before booking. A height surprise at a low bridge can strand a load.
• Articulation lock: Forgetting to engage the transport lock pin can allow the machine to articulate during transit, shifting the load and creating a safety hazard.
• Tire pressure: ADT tires are large and heavy; confirm they are properly inflated before loading to avoid tire failure during transport.
• Fuel level: Keep fuel to a minimum (quarter tank or less) to reduce weight during transport.

Get a Quote to Ship Your Articulated Dump Truck

IronHaul Logistics specializes in heavy equipment transport for large ADTs and other oversized construction and mining machinery. We handle permit coordination, escort vehicles, and specialized trailer sourcing for every load. Call (208) 495-2260, email [email protected], or fill out our online quote form to get a fast, accurate rate for your ADT shipment.