What is the legal weight limit for a truck?
Federal law states that single axles are limited to 20,000 pounds, and axles closer than 96 inches apart (tandem axles) are limited to 34,000 pounds. Gross vehicle weight is limited to 80,000 pounds.

It is important to understand this information to avoid your shipment being unknowingly overweight; thus, receiving a costly citation. See the diagram below for axle weight distribution.
 CAB WEIGHT = 17,000 - 19,500 LBS