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Flatbed & Step-Deck

Open-deck freight, explained from the deck to the jobsite.

Steel, pipe, lumber, machinery and building materials on 48' and 53' flatbeds and step-decks: how securement, tarping and unloading should be settled before any truck rolls.

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What ships on a flatbed

Open-deck trailers, including expedited and same-day flatbed freight on a hotshot deck when a load cannot wait, carry the freight that can't go through a dock door: anything loaded by forklift from the side, by crane from above, or too long or awkward for an enclosed van. Typical open-deck loads include:

  • Steel and metals: coil, plate, beams, rebar, angle and structural members.
  • Pipe and tubing: steel, ductile iron, PVC and HDPE, bundled or on racks.
  • Lumber and building materials: dimensional lumber, trusses, roofing, block and drywall.
  • Machinery and equipment: industrial machines, compressors, generators and crated components.
  • Solar racking: steel posts, torque tubes and mounting hardware headed to project sites.

Flatbed or step-deck?

The deciding factor is usually height. Most states set legal overall height around 13'6", and a standard flatbed deck sits about 5 feet up, so freight taller than roughly 8'6" pushes the load over. A step-deck drops the main deck low enough that freight up to about 10 feet tall can usually move without a height permit.

48' / 53' flatbedStep-deck
Approx. legal freight heightAbout 8'6"About 10' on the lower deck
LoadingSide, top or end, full length usableSide or top; ramps on some trailers help with rolling equipment
Best forSteel, pipe, lumber, long bundlesTaller machinery, equipment, stacked crates
Watch out forHeight limits on tall freightShorter usable lower-deck length

Exact limits vary by trailer and by state, so the decision should be made against your actual dimensions rather than a chart.

For machines and equipment, the cost guides show sourced price ranges: cost to ship a mini excavator, skid steer and generator.

Securement and tarping

On an open deck, the load is only as safe as its securement. Federal cargo securement rules set minimum tie-down counts and working load limits based on the weight and length of the freight, and specific rules apply to commodities like coil, pipe and machinery. What that means for you as a shipper:

  • Know whether the freight is bundled, crated, on skids or loose, and where the lift and tie-down points are.
  • Flag anything that can be scratched or crushed by chains, so edge protection or straps can be planned.
  • Say whether the load needs tarps (lumber, finished steel, electrical gear) and whether a specific tarp type is required.
  • Note any dunnage the shipper supplies, such as blocking or 4x4s between layers.
On a good written quote: tarping, extra securement and any special equipment appear as their own line items, so the price you approve is the price that matters.

Jobsite deliveries and unloading

Construction sites, solar farms and plant expansions are where open-deck freight gets complicated. There may be no dock, no forklift until the crew arrives, soft ground, or a gate that closes at 3 p.m. Unloading is the receiver's responsibility on a flatbed, so before dispatch these should be confirmed:

  • What equipment will unload the truck (forklift, telehandler or crane) and that it can handle the heaviest piece.
  • An on-site contact name and phone number, plus site hours and delivery instructions.
  • Whether the truck can physically reach the drop point: road access, turning room and ground conditions.
  • Any site safety requirements for the driver, such as hard hat, vest or check-in.

If the receiver isn't ready when the truck arrives, detention starts. Spelling this out in advance is the single biggest thing that keeps a flatbed load on budget.

Oversize freight

Loads wider than 8'6", taller than legal height or heavier than legal axle weights are oversize or overweight. They need state permits and may need escort vehicles, specific travel times or route surveys. Oversize is always a case-by-case question: exact dimensions, weight and photos decide whether a load is routine or a permit move, and what the permit process involves.

What an open-deck quote depends on

DetailWhy it matters
Length, width and height of each pieceDecides flatbed vs. step-deck and whether permits apply
Weight per piece and totalSets axle loading and the right equipment
Commodity and packagingDrives securement method and tarping
Loading and unloading methodConfirms side, top or end access at both ends
Site contact and hoursAvoids a truck waiting at a closed gate

Our free Open-Deck Load Prep Sheet puts all of this on one page. Or tell us about your freight and we'll contact you the day we open.

Flatbed & step-deck FAQ

What is the difference between a flatbed and a step-deck?

A standard flatbed deck sits about 5 feet off the ground, which leaves roughly 8'6" of legal freight height in most states. A step-deck (drop-deck) has a lower main deck, so freight up to about 10 feet tall can usually move without a height permit. Step-decks give up some deck length on the upper section, so long freight may still need a flatbed.

How much weight can a flatbed carry?

It depends on the specific tractor and trailer, how the weight sits on the axles, and the states on the route. There is no single number that applies to every load, so the legal payload should be confirmed against your actual freight rather than promised as a figure in advance.

Who unloads a flatbed at a jobsite?

The receiver does. Flatbed drivers secure and release the load, but unloading takes a forklift, telehandler or crane at the delivery site. What equipment will be on hand, and who operates it, should be confirmed before any truck is dispatched.

Does my load need to be tarped?

If the freight can be damaged by rain, road grime or sun, such as finished steel, lumber, drywall or electrical equipment, it usually needs tarps. Flag it up front, because tarping is typically a separate line item on a quote and affects which trailers can take the load.

What about oversize loads?

Oversize freight is always a case-by-case question. Loads wider than 8'6", taller than legal height, or over legal weight need state permits and sometimes escort vehicles or route surveys. Exact dimensions and weight decide whether a load is routine or a permit move, so have them ready when you tell us about your freight.

Free download

Open-Deck Load Prep Sheet

Dimensions, weights, securement and unloading: fill it out once so any carrier can price flatbed or hotshot freight accurately.

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