The semi trailer, when paired with a semi truck, forms an iconic image often seen on our highways. These commercial vehicles play a vital role in the global supply chain, transporting various cargo types across state lines and even national borders. This article provides an in-depth look at the dimensions of a semi trailer, factors influencing these dimensions, and how different types of trailers serve unique transport purposes.
You can find common semi trailer dimensions and maximum cargo weight in the tables below.
Dimensions Of Semi Trailers
| Type of Trailer | Length | Width | Height |
|---|---|---|---|
| Flatbed Trailers | 48 to 53 feet | 8.5 feet | 5 feet |
| Dry Van Trailers | 53 feet | 8.5 feet | Up to 9 feet |
| Refrigerated Trailers ("Reefers") | 53 feet | 8.5 feet | 8 feet |
| Step Deck (Drop Deck) Trailers | 48 to 53 feet | 8.5 feet | 10 feet (lower deck height) |
| Extendable Double Drop Trailers | Up to 80 feet or more | 8.5 feet | Up to 11.6 feet |
| Lowboy Trailers | 40 to 53 feet | 8 feet | 18 to 24 inches |
| Tanker Trailers | 40 to 53 feet | 8.5 feet | Varies |
| Pup Trailers | 26 to 29 feet | 8.5 feet | Up to 13.5 feet |
| Side Kit (or "Sidewall") Trailers | 48 to 53 feet | 8.5 feet | 4 to 5 feet |
| Removable Gooseneck (RGN) Trailers | 48 to 53 feet | 8.5 feet | Variable |
| Conestoga Trailers | 48 to 53 feet | 8.5 feet | 9 to 10 feet |
| Intermodal Chassis Trailers | 20 to 53 feet | 8.5 feet | Variable |