* Single-axle vehicles: Maximum of 20,000 pounds
* Tandem-axle vehicles: Maximum of 34,000 pounds
* Tri-axle vehicles: Maximum of 50,000 pounds
* Four or more axles: Maximum of 80,000 pounds
Per-Axle Weight
* Single-axle vehicles: Maximum of 10,000 pounds
* Tandem-axle vehicles: Maximum of 17,000 pounds
* Tri-axle vehicles: Maximum of 22,000 pounds
* Four or more axles: Maximum of 23,000 pounds
Exceptions
There are a few exceptions to these general rules. For example, certain types of heavy machinery and construction equipment may be allowed to exceed the weight limits if they have a special permit.
