When shipping on an open-deck trailer, one of the first decisions is whether a flatbed or a step deck is the better fit.
Both trailer types are versatile and widely used, but each has unique advantages depending on cargo dimensions and route requirements.
1️⃣ Flatbed — Classic Single-Level Platform
A flatbed trailer is an open, single-level deck without sides or a roof.
Key advantages:
- Easy side or top loading/unloading, ideal for forklifts or cranes.
- Perfect for lumber, steel beams, pipes, palletized freight, and construction materials that fit within the legal height limit of 8.5 ft (2.6 m).
- Typically lower rental and maintenance costs than specialized trailers.
Consideration:
Tall cargo on a flatbed may require special permits and careful route planning to avoid low bridges or overpasses.
2️⃣ Step Deck — For Taller Freight and Heavy Equipment
A step deck (drop deck) trailer has two levels — a shorter upper deck and a longer lower deck that sits closer to the ground.
Advantages:
- Allows freight up to about 10 ft high without special over-height permits.
- Provides greater stability for heavy machinery and industrial equipment due to a lower center of gravity.
- Well-suited for construction equipment, tanks, vehicles, and large industrial parts.
Special handling:
The two-deck configuration requires careful load placement and weight distribution to ensure balance and compliance.
3️⃣ Other Key Factors
When choosing between a flatbed and a step deck, consider:
- Cargo height – over 8.5 ft generally points to a step deck.
- Weight and weight distribution – step decks offer enhanced stability for heavy machines.
- Loading requirements – both allow top and side loading, but step decks may need ramps if roll-on/roll-off access is required.
- Weather protection – either trailer will need tarps or Conestoga covers to shield freight from rain and snow.
Final Word
- A flatbed is the cost-effective and straightforward choice for standard loads within legal height.
- A step deck is best for taller or heavier equipment, avoiding the need for costly over-height permits and special routing.
With extensive experience in open-deck operations, MM Brothers Inc. can recommend the optimal trailer type, plan safe routes, and provide all necessary securement to ensure efficient and fully compliant delivery anywhere in the United States.
