Semi-Trailer Dimensions: Inside Height, Width, Length - Be A Trucker

• Menu
• Skip to right header navigation
• Skip to main content
• Skip to secondary navigation
• Skip to primary sidebar

Home » Semi-Trailer Dimensions: Inside Height, Width, Length

The US Department of Transportation set the standards for the dimensions of semi-trailers that, legally, can use the highways across the country.

Semi-trailer dimensions may vary significantly because different types of semi-trailers have different sizes.Check out the dimensions of different semi-trailers below.

1. 48 ft and 53 ft semi-trailers

Due to their enclosed nature, semi-trailers, also known as dry vans, transport various types of products that require protection from external factors like rain, dust, or wind.

Standard semi-trailer dimensions
Length	48'-53'
Width	102"
Door height	110"
Total height	13'6"
Door types	Swing /Roller doors

Semi-trailer inside cargo capacity
Cargo width	98"-101"
Cargo height	108"-110"
Cargo weight	45,000 lbs
Pallet count	24-26

2. Flatbed semi-trailers

Flatbed semi-trailers can transport long or heavy freight that can't fit into an enclosed semi-trailer.

See below the dimensions for flatbed semi-trailers.

Flatbed semi-trailer dimensions
Length	48'-53'
Width	102"
Height	60"

Flatbed semi-trailer capacity
Cargo width	102"
Cargo height	102" - 108"
Cargo weight	48,000 lbs
Pallet count	24

3. Reefer semi-trailers

During the entire transit time, reefer semi-trailers maintain a specific temperature range inside the trailer.

Because of that, reefers transport temperature-sensitive products that require specific temperature range during transportation to safely deliver the product.

See below the reefer semi-trailer dimensions.

Reefer semi-trailer dimensions
Length	48'- 53'
Width	102"
Door height	110"
Height	13'6"

Reefer semi-trailer inside cargo capacity
Cargo width	96" - 98"
Cargo height	102"
Cargo weight	44,000 lbs
Pallet count	24

4. Step-deck semi-trailer

Step-deck semi-trailers transport products that are too tall for a standard flatbed.The trailer consists of two decks - the upper and the lower.The use of the lower deck, or well, allows for freight up to 10’ high to be legally transported while still providing the same loading/unloading capabilities of a standard flatbed.

Step-deck semi-trailer dimensions
Length: Total	48'- 53'
Length: Lower deck	37' - 43'
Length: Upper deck	10' - 11'
Width	102"
Height: Lower deck	42"
Height: Upper deck	60"

Step-deck semi-trailer capacity
Cargo width	102"
Cargo height	120" - 126"
Cargo weight	45,000 lbs
Pallet count	24

5. Double drop semi-trailer (Lowboy)

The double drop semi-trailers transport oversize freight.The low profile of the well provides the ability to legally transport 12' tall freight.

Lowboy semi-trailer capacity
Length: Total	48"
Length: Main well	26' - 30'
Length: Front/Rear decks	8' - 10'
Width	102"
Height	18" - 24"

Lowboy semi-trailer capacity
Cargo width	102"
Cargo height	144" - 150"
Cargo weight	40,000 lbs

6. Conestoga semi-trailers

Conestoga semi-trailers provide the enclosed option of a dry vans while providing the same loading/unloading capabilities as a flatbeds.When open, a sliding curtain provides the ability to load or unload freight from the side, rear, or top. When closed, the curtain offers protection to the freight from weather.

Conestoga semi-trailer dimensions
Length	48' - 53'
Width	102"
Door height	98" - 102"
Total height	13'6"

Conestoga semi-trailer inside cargo capacity
Cargo width	102"
Cargo height	98" - 102"
Cargo weight	45,000 - 48,000 lbs
Pallet count	24-26

7. RGN semi-trailers

RGN (removable gooseneck, also called low boy or double drop) semi-trailers transport oversize freight. RGNs transport heavy machinery like tractors, specialty vehicles, and others.

With the ability to detach from the cab, and with drop-down ramps, freight can easily be driven on and off.

RGN semi-trailer dimensions
Length: Total	48'
Length: Main well	26'-30'
Length: Rear deck	8' - 10'
Width	102"
Height	18" - 24"

RGN semi-trailer capacity
Cargo width	102"
Cargo height	144" - 150"
Cargo weight	40,000

About John Dogman

John Dogman is the person managing the content on batrk.com. He aims to answer as much as possible questions that current truck drivers or future truckers may have.

• Affiliate Disclosure
• GDPR Privacy Policy
• Blog
• About
• Contact

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information.Cookie settingsACCEPTPrivacy & Cookies Policy Close

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary Necessary Always Enabled Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. Non-necessary Non-necessary Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website. SAVE & ACCEPT