Vehicle weight state comparison

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Under CFR 23 – Highways – Part 658 outlines regulations for Truck Size and Weight. Section 658.17 Weight – reads that States may not enforce on the Interstate System vehicle weight limits of less than 20,000 pounds on a single axle; 34,000 pounds on a tandem axle; or the weights derived from the Bridge Formula, up to a maximum of 80,000 pounds, including all enforcement tolerances .

States may not limit the steering axle weights to less than 20,000 pounds or the axle rating established by the manufacturer, whichever is lower.

State comparison

	Interstate and designated Federal Aid highways			State and other supplemental highways
State	Single axle	Tandem axle	Gross vehicle weight	Single axle	Tandem axle	Gross vehicle weight
Alabama	20,000	34,000	80,000	20,000	36,000	80,000 or 84,000 with 6 or more axles
Alaska	20,000	38,000		20,000	38,000 3'6" minimum spacing
Arizona	20,000	34,000	80,000 Federal Bridge Formula	20,000	34,000	80,000 Federal Bridge Formula
Arkansas	20,000	34,000	80,000	20,000	34,000	80,000
California	20,000 for buses 20,500 lb	34,000	80,000	20,000 for buses 20,500 lb	34,000	80,000
Colorado	20,000	36,000	80,000	20,000 21,000 lb if the vehicle or combination is a digger derrick or bucket boom truck operated by an electric utility.	40,000	85,000
Connecticut	18,000 If axles are less than 6' apart, 22,400 if axles spaced 6' or greater		80,000	18,000 If axles are less than 6' apart, 22,400 if axles spaced 6' or greater		80,000
Delaware	20,000	34,000	80,000	22,400	36,000	80,000
District of Columbia	20,000	34,000	80,000	20,000 21,000 lb if GVW is under 73,000 lb	34,000	80,000
Florida	22,000	44,000	80,000	22,000	44,000	80,000
Georgia	20,340	34,000 Exception: If vehicle is less than 55' long and gross weight is less than 73,280 lb, will allow 40,680 lb	80,000 subject to federal bridge formula	20,340	37,340 40,680 semi-trailer tandems	80,000 subject to state bridge formula
Hawaii	22,500	34,000	80,000 subject to federal bridge formula	22,500	34,000	88,000 or state bridge formula
Idaho	20,000 or manufacturer’s rating of tire/axle	34,000	80,000 without permit	20,000 or manufacturer’s rating of tire/axle	34,000	80,000 without permit
Illinois	20,000	34,000	80,000	20,000	34,000	80,000
Indiana	20,000	34,000	80,000 90,000 lb on toll road	20,000	34,000	80,000 90,000 lb on toll road
Iowa	20,000	34,000	80,000	20,000	34,000	80,000
Kansas	20,000	34,000	80,000	20,000	34,000	85,500
Kentucky	20,000	34,000	80,000	20,000	34,000	80,000 On Class AAA highways, 62,000 lb on Class AA highways, and 44,000 lb on Class A highways
Louisiana	20,000	34,000	80,000	22,000	37,000	80,000
Maine	20,000	34,000	80,000 100,000 lb on a 3-axle truck-tractor and tri-axle semitrailer on the Maine Turnpike	20,000	38,000	80,000 100,000 lb conditionally on a 3-axle truck-tractor and tri-axle semitrailer
Maryland	20,000 22,400 lb if 73,000 lb RGVW or less	34,000	80,000	20,000 22,400 lb if 73,000 lb RGVW or less	34,000	80,000
Massachusetts	22,400 18,000 lb if spaced less than 6' apart	34,000	80,000	22,400 18,000 lb if spaced less than 6' apart	34,000	80,000
Michigan
Minnesota	20,000	34,000	80,000	20,000	34,000	80,000
Mississippi	20,000	34,000 24,000 lb on 57,650 lb routes	80,000	20,000	34,000 24,000 lb on 57,650 lb routes	80,000
Missouri	20,000	34,000	80,000	22,000	36,000	80,000
Montana	20,000 Axles over 11,000 pounds must have 4 tires or wide-base tires	34,000	80,000	20,000 Axles over 11,000 pounds must have 4 tires or wide-base tires	34,000	131,060 based on bridge formula example: 9 axles over 105’
Nebraska	20,000	34,000	80,000	20,000	34,000	95,000 following bridge formula and axles
Nevada	20,000	34,000	129,000 following bridge formula and axles registration must cover additional weight	20,000	34,000	129,000 following bridge formula and axles registration must cover additional weight
New Hampshire	20,000 With a GVW greater than 73,280 lbs and axle spacing greater than 8’	34,000 36,000 if gross weight is less than 73,280 lb	80,000	20,000 18,000 lb on axles less than 10' apart, 22,400 lb on axles more than 10' apart	34,000 36,000 if gross weight is less than 73,280 lb	80,000
New Jersey	22,400	34,000	80,000	22,400	34,000	80,000
New Mexico	21,600	34,320	86,400	21,600	34,320	86,400
New York	22,400	36,000	80,000	22,400	36,000	80,000
North Carolina	20,000	38,000	80,000	20,000	38,000	80,000
North Dakota	20,000	34,000	80,000	20,000	34,000	105,500 unless otherwise posted
Ohio	20,000	34,000	80,000	20,000	34,000 Spaced more than 4' apart, and weighed simultaneously. Plus 1,000 lbs per foot or fraction thereof over 4', up to 40,000 lbs.	80,000
Oklahoma	20,000	34,000	80,000	20,000	34,000	80,000
Oregon	20,000	34,000	80,000	20,000	34,000	80,000
Pennsylvania	20,000 22,400 lb if GVW is 73,280 lb or less	34,000 36,000 lb if GVW is 73,280 lb or less	80,000 following bridge formula	20,000 22,400 lb if GVW is 73,280 lb or less	34,000 36,000 lb if GVW is 73,280 lb or less	80,000 following bridge formula
Rhode Island	22,400	36,000	80,000	22,400	36,000	80,000
South Carolina	20,000	35,200	80,000	20,000	36,000	80,000
South Dakota	20,000	34,000	80,000	20,000	34,000	Federal Bridge Formula
Tennessee	20,000	34,000	80,000	20,000	34,000	80,000
Texas	20,000	34,000	80,000	20,000	34,000	80,000
Utah	20,000	34,000	80,000	20,000	34,000	80,000
Vermont	20,000	34,000	80,000	22,400	36,000	80,000
Virginia	20,000	34,000	80,000	20,000	34,000	80,000
Washington	20,000	34,000	105,500 max. determined by number of axles, spacings, and tire size	20,000	34,000	105,500 max. determined by number of axles, spacings, and tire size
West Virginia	20,000	34,000	80,000	20,000	34,000	80,000
Wisconsin	20,000	34,000	80,000	20,000	34,000	80,000
Wyoming	20,000	36,000	117,000 using Table I by formula for Interstate, primary and secondary, 80,000 using Table 2	20,000	36,000	117,000 using Table I by formula for Interstate, primary and secondary, 80,000 using Table 2

['Size and Weight Limits']

['Sizes and weights']

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