How Much Does A Semi Truck Weigh With Trailer

How Much Does A Semi Truck Weigh With Trailer

How much does a semi truck weigh with trailer

Those massive vehicles crisscrossing our highways, known as semi-trucks, weigh a lot more than you might expect.

A typical, fully-loaded semi-truck weighs around 33,000 pounds. To put that in perspective, it’s the weight of about 10 cars!

What Makes Up a Semi-Truck’s Weight?

  • Tractor: The tractor unit (the part with the cab) alone weighs between 10,000 and 25,000 pounds depending on the size and features.
  • Trailer: An empty trailer usually weighs about 10,000 pounds.
  • Cargo: The cargo in a fully loaded trailer can weigh upwards of 45,000 pounds!

But How Much Can a Semi Haul?

Federal law limits a fully loaded semi-truck to a maximum of 80,000 pounds.

This is to ensure safety on the roads. Of course, this is the maximum and many trucks will be carrying weights under this limit.

How Big is a Semi-Truck?

  • Tractor: Averages around 20 feet long, 8 feet tall, and 6.5 feet wide.
  • Trailer: Typically 28 feet long, 7.5 feet wide, and 13 feet tall.

What Affects Semi-Truck Weight?

  • Engine size: Most semi-trucks have colossal engines weighing near 3,000 pounds, but bigger, more powerful engines weigh even more.
  • Truck Type: Super heavy-duty semis are built with sturdier parts, making them weigh more
  • Cargo: Obviously, the cargo’s weight is a significant factor in overall truck weight.

What if a Semi-Truck Exceeds the Weight Limit?

Exceeding weight limits strains the semi truck engine, puts everyone on the road at risk, and is illegal. Authorities will confiscate the truck and impose fines.

There are state and federal laws to prevent these overloaded trucks from being a danger on the road.

Important Things to Remember

  • Semi-trucks are essential to the economy, but they are powerful machines that must be operated safely.
  • Weight limits ensure the safety of truckers and other drivers.
  • If you see an overloaded semi-truck, report it to the authorities.
Tractor (empty)10,000 – 25,000 pounds
Trailer (empty)10,000 pounds
Cargo (average)36,000 pounds
Loaded semi-truck (average)33,000 pounds
Maximum weight limit80,000 pounds
Tractor length20 feet
Tractor height8 feet
Tractor width6.5 feet
Trailer length28 feet
Trailer width7.5 feet
Trailer height13 feet
Engine weight (average)3,000 pounds


  • Federal Motor Carrier Safety Administration (FMCSA): They regulate commercial vehicles and have extensive resources on truck weight limits and safety regulations.
  • Department of Transportation (DOT): Provides information on infrastructure and regulations, including weight restrictions.
  • American Trucking Associations (ATA): A leading industry advocate offering resources and information on trucking operations.
  • Truckload Carriers Association (TCA): Represents truckload carriers and provides insights on industry practices and regulations.

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