Alaska Administrative Code › Title 17 - Transportation and Public Facilities › Chapter 25 - Operations, Wheeled Vehicles › Article 1 - Motor Vehicles: Size and Weight › 17 AAC 25.013 - Legal vehicle weight

Current through May 31, 2024
(a) Except as
				provided in
				17 AAC 25.335, the weight of a
				vehicle or combination of vehicles, including load and equipment, operated or
				moved on the state highway system may not exceed a limit set out in this
				section. If more than one weight limit applies, the most restrictive limitation
				will be used to determine the maximum allowable weight, as follows:
(1) the weight on a tire may not exceed 600
				pounds per linear inch of tire width based upon the tire manufacturer's rating
				of nominal tire width;
(2) repealed
				4/12/2013;
(3) repealed
				4/12/2013;
(4) except as provided
				in (5) of this subsection, for a vehicle or combination of vehicles, including
				load and equipment, the weight on axles or axle groups may not exceed, and the
				distance between axles may not be less than, the following:
Weight (pounds)
Distance
Single Axle
20,000
8 feet and 1 inch minimum spacing*
2-Axle Group
38,000
3 feet and 6 inches minimum spacing
3-Axle Group
42,000
3 feet and 6 inches minimum spacing
4-Axle Group
50,000
3 feet and 6 inches minimum spacing
* Any axle spaced less than 8 feet and 1 inch from any other
				  axle, measured between the centers of the nearest axles, is considered as part
				  of an axle group. In multi-axle groups, all axles must carry at least 6,000
				  pounds if the axle group weight is more than 50 percent of the legal group
				  weight. Lift axles or variable suspension axles are allowed in the drive axle
				  group of the power vehicle, but may not be used to determine the legal
				  allowable vehicle gross weight prescribed by the Bridge Gross Weight Formulas
				  in (a)(6) of this section.
(5) if the combination is a truck tractor and
				single semitrailer combination where the length of the semitrailer is 48 feet
				or more, the weight on a three-axle group on the semitrailer may not exceed,
				and the distance between the axles may not be less than the following:
Weight (pounds)
Distance
42,000
3 feet and 6 inches minimum spacing
43,500
5 feet minimum spacing
45,000
6 feet minimum spacing
(6)
				the maximum gross vehicle weight for a vehicle or vehicle combination may not
				exceed the amount prescribed by the following formulas, referred to as the
				Bridge Gross Weight Formulas:
(A) maximum
				gross vehicle weight for a vehicle with lift axles in the drive axle group may
				not be greater than the weight determined under the following formula:
W = 500 [ LN / N-1 + 12N + 36]
where
W = the maximum gross vehicle weight to the nearest 500
				  pounds;
L = the distance in whole feet, measured between the centers
				  of the extreme axles for the vehicle or the vehicle combination; a measurement
				  including a fractional portion of a foot is stated as the next higher whole
				  number; and
N = the number of axles on the vehicle or vehicle combination
				  and does not include lift axles in the drive axle group of a power
				  vehicle;
(B) the maximum
				gross vehicle weight for a vehicle with no lift axles in the drive axle groups
				may not be greater than the weight determined under the following formula:
W = 500 [ LN / N-1 + 12N + 36] + 3,000
where
W = the maximum gross vehicle weight to the nearest 500
				  pounds;
L = the distance in whole feet, measured between the centers
				  of the extreme axles for the vehicle or the vehicle combination; a measurement
				  including a fractional portion of a foot is stated as the next higher whole
				  number; and
N = the number of axles on the vehicle or vehicle
				  combination.