Low Boy Trailer Dimensions & Shipping Guide
Built for Heavy, High-Profile, and Specialized Loads
Low Boy (RGN) Trailer Specifications & Guide
Double drop trailers feature an ultra-low center well that allows tall or heavy freight to travel safely within legal height limits. Their multi-level deck design provides stability, balanced weight distribution, and clearance flexibility that standard open-deck trailers cannot match.
Built for demanding, precision transport, double drops deliver reliable performance for oversized and specialized shipments across the United States, Canada, and Mexico.
Double Drop / Low Boy
Quick Specs
Front Deck:
~10′ L x 102″ W
Lower Deck/Well:
~24-30′ L x 102″ W
Rear Deck:
~10′ L x 102″ W
Well Height:
~18″-24″ H
Legal Weight Capacity:
~40,000 – 150,000lbs+ (5-13+ axles)
Use Case:
Commonly used for tall or oversized industrial machinery, tanks, generators, or equipment that needs to ride low to clear bridges and overpasses.
Removeable Gooseneck (RGN)
Quick Specs
Front Deck:
~10′ L x 102″ W
Lower Deck/Well:
~24-30′ L x 102″ W
Rear Deck:
~10′ L x 102″ W
Well Height:
~18″-24″ H
Legal Weight Capacity:
~40,000 – 150,000lbs+ (5-13+ axles)
Use Case:
Best for heavy, self-propelled equipment such as excavators, cranes, tractors, and specialty vehicles that can be driven directly onto the trailer.
Double Drop Stretch
Quick Specs
Front Deck:
~10′ L x 102″ W
Lower Deck/Well:
~29-50′ L x 102″ W
Rear Deck:
~10′ L x 102″ W
Well Height:
~18″-24″
Legal Weight Capacity:
~40,000lbs – 100,000lbs+ (multi axles)
Use Case:
Designed for freight that exceeds standard well length, such as long vessels, structural frames, machine bases, or large fabricated components.
Double Drop Conestoga
Quick Specs
Front Deck:
~10′ L x 102″ W x 96″ H
Lower Deck/Well:
~24-30′ L x 102″ W x 142″ H
Rear Deck:
~10′ L x 102″ W x 116″ H
Well Height:
~18″-24″ H
Legal Weight Capacity:
~40,000lbs
Use Case:
Ideal for high-value machinery like CNC machines, robotics, and medical or automation equipment that requires full weather protection without tarping.
Examples of Our Low Boy / RGN Shipments
A look at how we’ve moved low boy shipments recently.
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What These Trailers Haul Best
If it’s tall, heavy, self-propelled, or has a high center of gravity, an RGN/lowboy is usually the safest and most compliant choice.
- Dozers, loaders, excavators, cranes, pavers
- CNC lines, presses, injection molders, tanks, generators
- Transformers & high-center-of-gravity equipment
- Over-height skids, vessels, large fabrications
- Wind/energy components (when geometry fits a low well)
- Oversized Vehicles that need to be driven on and are over 10' tll (see height)
Ideal Industries: Manufacturing, Energy, Mining, Infrastructure, and Construction
Navigating Height Regulations
A standard flatbed allows for 8’6″ of cargo height, but legal height limits vary by state. Western states often permit a total height of up to 14 feet, while many eastern states cap it at 13’6″. This means a load that is legal on a flatbed in California may require an overheight permit, or a different trailer such as a step deck, to travel to states like New York.
Our team uses this state-by-state data to plan the most efficient and compliant route for your freight.
Brief History of the Double Drop Trailer
Double drop trailers were developed to move extremely tall or heavy equipment that could not travel on flatbeds or step decks without permits. Early versions appeared as heavy industry expanded in the mid-1900s, especially in construction, mining, and agricultural manufacturing. By lowering the center section of the trailer between the front and rear axles, builders created a “well” that could carry tall machinery while staying within legal height limits. Over time, detachable gooseneck designs were introduced, allowing equipment to be driven directly onto the trailer. Today, double drop and RGN trailers are essential for hauling oversized machinery, large industrial components, and specialized freight across North America.
Equipment & Load Securement
Proper securement ensures safety, compliance, and protection for your freight. All carriers follow FMCSA 393.100 cargo securement regulations. Common Securement Tools:
Chains & Binders
for machinery, steel, and heavy freight
Straps & Edge Protectors
for finished goods and delicate cargo
Tarps
to shield against weather and road debris
Dunnage & Blocking
for balance and elevation
Our team provides guidance on securement requirements based on your freight type and route.
Explore Shipping Solutions by State
Click on a state below to view specific freight services for each state.
From Our Blog
Insights on Shipping, Trailer Types, and Logistics Trends
RGN / Double Drop / Lowboy FAQs
What’s the max legal height I can haul without a permit on an RGN?
In most 13’6″ corridors, plan on up to ~12′ freight height in the well (13’6″ minus 18″–24″ deck). We’ll confirm per route.
How much can a 3-axle RGN carry?
Do I need a pilot car?
Can you run night or holiday?
Can you protect sensitive machinery on an RGN?
Yes—via crating/wrapping, partial enclosures, and careful securement. True Conestoga RGN is uncommon; we’ll advise best protection.