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Flatbed vs Step Deck: When to Use Each
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Equipment5 min read

Flatbed vs Step Deck: When to Use Each

CG

Charles Galfsky

Director of Operations · December 18, 2024

When shipping freight that won't fit in an enclosed trailer—whether due to size, shape, or weight—you'll typically be looking at flatbed equipment. But should you use a standard flatbed or a step deck? Let's break down the differences.

Open-deck freight rides exposed, so equipment choice and securement matter as much as the rate.
Open-deck freight rides exposed, so equipment choice and securement matter as much as the rate.

Standard Flatbed Trailers

A standard flatbed is exactly what it sounds like: a flat trailer bed with no sides or roof.

Specifications:

  • Deck height: ~60" from ground
  • Standard length: 48' or 53'
  • Legal max width: 8'6"
  • Legal max height: 8'6" (for total 13'6" from ground)
  • Weight capacity: ~48,000 lbs

    Best for:

  • Building materials
  • Machinery
  • Steel, lumber, pipe
  • Any freight under 8'6" tall

    Step Deck (Drop Deck) Trailers

    A step deck has two levels: a shorter upper deck near the cab and a lower main deck.

    Specifications:

  • Upper deck height: ~60"
  • Lower deck height: ~38-42"
  • Lower deck length: 37-40'
  • Legal max height: 10' on lower deck
  • Weight capacity: ~48,000 lbs

    Best for:

  • Taller machinery
  • Construction equipment
  • Agricultural equipment
  • Freight 8'6" to 10' tall

    Double Drop (Lowboy) Trailers

    For the tallest or heaviest freight, double drops offer even more clearance.

    Specifications:

  • Well height: 18-24"
  • Legal max height: ~11'6" in well
  • Typically shorter decks
  • Weight capacity: varies (some rated for heavy haul)

    Best for:

  • Heavy equipment
  • Tall industrial machinery
  • Items over 10' tall

    • Max Freight Height by Equipment

    The taller your freight, the lower the deck you need. Heights shown in feet; hover for detail.

    Anything taller than ~11'6" generally moves as an oversize permit load.

    How to Choose the Right Equipment

    Consider Height First

    Measure your freight including any packaging or securing materials. Add a few inches for clearance and securing.

    Freight HeightRecommended Equipment
    Under 8'6"Standard Flatbed
    8'6" - 10'Step Deck
    Over 10'Double Drop or Permits

    Consider Weight

    All standard flatbeds have similar weight limits (~48,000 lbs). For heavier loads, you'll need specialized heavy haul equipment.

    Consider Loading

  • Flatbeds can be loaded from sides or rear
  • Step decks require ramps for the upper deck
  • Consider your loading/unloading capabilities

    Tarping and Securing

    Open deck freight requires proper securement:

  • Chains, straps, or binders rated for cargo weight
  • Tarping may be required (lumber tarps, smoke tarps, etc.)
  • Some freight requires edge protection

    Chainlink Flatbed Services

    We work with experienced flatbed carriers who know how to properly secure and transport open deck freight. Our team can help you select the right equipment for your shipment.

    Request a flatbed quote today.

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