List of Commercial Truck Axle Weight Limits by State

March 17, 2020

The reason that axle legal weights are significant for commercial trucks is that both state and federal authorities are concerned about the safety of truckers, other motorists, and the roads they drive on as well. If a truck is carrying too much weight, it could well pose problems for roads which are not designed to support that much weight, and damage could occur.

In addition, some bridges and overpasses might not be able to support heavier weights, so there is a genuine safety issue associated with carrying too much weight.

For this reason, each state has established standards for the maximum amount of weight that any commercial truck is allowed to carry on a single axle, a double axle, and a tridem axle. Adherence to these standards will make driving safer for everyone on the road and will ensure that the roads themselves are not damaged by the weight of the vehicles.

The US Department of Transportation compiles this information so that owner/operators can be aware of the limitations they should be aware of as they make trips cross country. Note that cargo and tractor and trailer cannot exceed 80,000 gross weight.

Commercial Truck Axle Weight Limits Infographic

State-by-State Commercial Truck Axle Weight Limits

Alabama

Single Axle: 20,000 lbs.
Double Axle: 34,000 lbs.
Tridem Axle: 42,000 lbs.
Gross Weight 80,000 lbs.

Alaska

Single: 20,000 lbs.
Double: 38,000 lbs.
Tridem: 42,000 lbs.
Gross Weight: Per FBF

Arizona

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Arkansas

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 50,000 lbs.
Gross Weight: 80,000 lbs.

California

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Undefined
Gross Weight: 80,000 lbs.

Colorado

Single: 20,000 lbs.
Double: 36,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Connecticut

Single: 22,000 lbs.
Double: 36,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Delaware

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 60,000 lbs.
Gross Weight: 80,000 lbs.

District of Columbia

Single: 21,000 lbs.
Double: 37,000 lbs.
Tridem: Per district weight table
Gross Weight: 79,000 lbs.

Florida

Single: 20,000 lbs.
Double: 40,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Georgia

Single: 20,340 lbs.
Double: 34,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Hawaii

Single: 22,500 lbs.
Double: 34,000 lbs.
Tridem: 42,500 lbs.
Gross Weight: 80,000 lbs.

Mississippi

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Missouri

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Idaho

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight 80,000 lbs.

Illinois

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 42,500 lbs.
Gross Weight 80,000 lbs.

Indiana

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 50,000 lbs.
Gross Weight: 80,000 lbs.

Iowa

Single: 20,000 lbs.
Double: 35,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Kansas

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 43,500 lbs.
Gross Weight: 80,000 lbs.

Kentucky

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 48,000 lbs.
Gross Weight: 80,000 lbs.

Louisiana

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 42,000 lbs.
Gross Weight: 80,000 lbs.

Maine

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 45,000 lbs.
Gross Weight: 80,000 lbs.

Maryland

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Massachusetts

Single: 18,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Michigan

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Minnesota

Single: 10,000 lbs.
Double: 34,000 lbs.
Tridem: 42,000 lbs.
Gross Weight: 80,000 lbs.

Montana

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Nebraska

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Commercial Truck Axle Weight Limits

Nevada

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

New Hampshire

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

New Jersey

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Axle N/A
Gross Weight: 80,000 lbs.

New Mexico

Single: 21,600 lbs.
Double: 34,200 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

New York

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

North Carolina

Single: 20,000 lbs.
Double: 38,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

North Dakota

Single: 20,000 lbs.
Double: 17,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Ohio

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Oklahoma

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Oregon

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Pennsylvania

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

Rhode Island

Single: 22,400 lbs.
Double: 36,000 lbs.
Tridem: N/A
Gross Weight: 80,000 lbs.

South Carolina

Single: 10,000 lbs.
Double: 35,200 lbs.
Tridem: Per state weight table
Gross Weight: 80,000 lbs.

South Dakota

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Tennessee

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 54,000 lbs.
Gross Weight: 80,000 lbs.

Texas

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: N/A
Gross Weight: 80,000 lbs.

Utah

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: N/A
Gross Weight: 80,000 lbs.

Vermont

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: N/A
Gross Weight: 80,000 lbs.

Virginia

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: N/A
Gross Weight: 80,000 lbs.

Washington

Single: 20,000 lbs.
Double: Per state weight table
Tridem: N/A
Gross Weight: 80,000 lbs.

West Virginia

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per FBF
Gross Weight: 80,000 lbs.

Wisconsin

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: Per state bridge formula
Gross Weight: 80,000 lbs.

Wyoming

Single: 20,000 lbs.
Double: 34,000 lbs.
Tridem: 42,000 lbs.
Gross Weight: 80,000 lbs.

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