Lowboy Trailers Explained: Uses, Dimensions, and Benefits

If you’re in the heavy haul or construction business, chances are you’ve come across the term “lowboy trailer.” These trailers are absolute workhorses when it comes to moving oversized or tall equipment. But what exactly is a lowboy trailer? What makes it different from other types of trailers like step decks or flatbeds? And when should you use one?

What is a Lowboy Trailer?

A lowboy trailer (also called a drop deck, low-bed or double drop) is a type of semi-trailer designed to haul heavy, tall, or oversized equipment. What makes it unique is its extremely low deck height, which allows it to legally transport taller loads that would otherwise exceed height restrictions on regular trailers.

Let’s elaborate on the definitions for these terms/names to understand the differences:

• Lowboy/Low-loader:
  This term is commonly used to describe a trailer with a single, extremely low deck. It has very low ground clearance, which allows for transporting taller loads that might otherwise be too high for a standard flatbed.
• Drop Deck:
  This term can refer to two types of trailers:
  • Step-deck: A trailer with two deck levels, where the front deck is raised, and the rear deck drops down.
  • Lowboy/Double-drop: A trailer with two drops in deck height, one after the gooseneck and one before the wheels, creating a very low deck for transporting taller loads.
    • Key Differences:
      • Ground Clearance: Lowboy trailers have the lowest ground clearance of all.
      • Deck Levels: Step-deck trailers have two deck levels, while lowboy trailers have a single, very low deck.

In summary, while “lowboy” is often used interchangeably with “drop deck” or “double drop,” it’s important to recognize that “drop deck” can also refer to step-deck trailers, which have a different deck configuration than lowboy/double-drop trailers.

The deck of a lowboy sits between the gooseneck and the rear wheels, dropping well below the standard trailer height. This design is key for moving equipment like:

• Bulldozers
• Excavators
• Cranes
• Industrial generators
• Transformers

Common Uses for Lowboy Trailers

Lowboy trailers are ideal for:

• Construction equipment transport
• Heavy machinery relocation
• Wind energy equipment
• Mining and oilfield equipment
• Agricultural equipment

Typical Dimensions

Lowboy trailers come in a few different configurations, but here’s a general idea of what to expect:

Some lowboys are extendable and can be customized for super loads, with multi-axle configurations depending on state regulations.

Benefits of Lowboy Trailers

So, why choose a lowboy over other trailer types? Here are a few key advantages:

• Increased Height Clearance – The lower deck height means you can haul taller equipment without violating DOT height limits, which typically top out at 13’6”.
• Better Stability – Lower center of gravity = more stability. That’s a big deal when you’re hauling 60,000 lbs of steel or machinery down the highway.
• Versatility – From construction sites to wind farms, lowboys are adaptable for many industries.
• Ease of Loading – Many lowboys have removable goosenecks (RGNs) or hydraulic systems that make loading/unloading easier, especially with wheeled or tracked equipment.

If you’re transporting oversized or heavy machinery, a lowboy trailer is a smart choice. Whether you’re renting for a one-off haul or adding to your fleet, understanding the specs and benefits helps ensure you’re picking the right tool for the job.

At Great Western Trailer, we offer a range of lowboy trailers at multiple locations across the U.S. Whether you’re in construction, oil & gas, or agriculture, our team can help match you with the right trailer for your load and route. Call or visit your nearest Great Western Trailer location or check out our inventory online at www.greatwesterntrailer.com.