DimGeniusStepdeck Trailer Dimensions
Also called: step deck, drop deck, single drop
A stepdeck, also called a drop deck, has a short upper deck over the truck’s fifth wheel and a longer lower deck behind it. The lower deck sits closer to the ground, so it takes taller freight than a flatbed without permits.
Stepdecks are common for machinery, equipment, and tall crated freight that is over flatbed height. Freight is loaded from the sides or from above, and ramps let some equipment drive on.
Dimensions and capacity
48' Stepdeck
| Deck | Length | Width | Max freight height |
|---|---|---|---|
| Bottom Deck | 38' (456 in) | 8' 6" (102 in) | 10' (120 in) |
| Top Deck | 10' (120 in) | 8' 6" (102 in) | 8' 6" (102 in) |
| Total deck length | 48' (576 in) | ||
| Max weight | 48,000 lbs (shared across decks) | ||
53' Stepdeck
| Deck | Length | Width | Max freight height |
|---|---|---|---|
| Bottom Deck | 42' (504 in) | 8' 6" (102 in) | 10' (120 in) |
| Top Deck | 11' (132 in) | 8' 6" (102 in) | 8' 6" (102 in) |
| Total deck length | 53' (636 in) | ||
| Max weight | 48,000 lbs (shared across decks) | ||
- Legal freight width is 8' 6". Wider loads are over-dimensional and need permits.
- The upper deck takes flatbed-height freight; the lower deck takes taller freight.
- These are the planning values DimGenius uses. Actual equipment varies by carrier — confirm with yours before booking.
Find out how many trucks your freight needs, across every trailer type.
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