How Many Feet Is an Average Semi Truck?

Semi trucks, also known as semi-trailer trucks, tractor-trailers, big rigs, and eighteen-wheelers are an integral part of the transportation industry. They are used to move goods from one place to another in a quick and efficient manner. One of the most common questions about these large vehicles is: How many feet is an average semi truck?

The answer to this question varies depending on the size and type of semi truck being considered. A semi truck typically consists of two parts: a tractor and a trailer.

The total length of the combination can range anywhere from 60 to 80 feet long. The tractor itself may be between 20 and 40 feet long, depending on the model and manufacturer, while the trailer can be up to 53 feet in length.

The weight of a semi truck also affects its overall size, with heavier models being longer than lighter ones. A fully loaded semi truck can weigh up to 80,000 pounds or more, which means that it may have an additional 10 or more feet in length than an empty one.

Semi trucks come in various sizes and configurations depending on their purpose. For example, some are designed for transporting hazardous materials while others are used for hauling livestock or carrying cargo containers. The size of these vehicles may vary based on their intended use.


As you can see, there is no definitive answer to the question “How many feet is an average semi truck?” Factors such as weight, configuration and purpose all play a role in determining the length of any given semi truck. However, most models range between 60 and 80 feet in total length when including both the tractor and trailer.

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Karen Watkins