List of Commercial Truck Axle Weight Limits by State
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.
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.
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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