Semi Truck Weight – Axle and Gross Weight Maximums – 5 Axle – 2020

Semi Truck weight is governed in the USA at the Federal Level at 80,000 lbs.  State weight limits can vary, the lowest is on Kentucky Non-Designated Highways (36,000 lbs) and the highest in Missouri Commercial Zones (112,000 lbs).  The average allowable maximum gross weight in 111 different jurisdictions in the USA and Canada is 82,503 lbs.  These limits are applicable to the standard 5 axle semi truck depicted below.

These are the gross weight limits, or the total amount that the truck combination can weigh, including itself and its load.  The payload, or how much the truck can carry, depends on the gross weight limit and the weight of the truck and trailer itself (the tare weight). 

Gross Weight Limit – Tare Weight = Payload

Components of Gross Weight limits

The reason that it is hard to give a specific answer to the question of how much a truck can weigh is because there are 5 different types of weight limits that must be calculated to find the weight limit of a particular truck.

  • Gross Weight Limit – Governments set a limit of the maximum total weight of a truck.
  • Axle Weight Limits – Governments set a limit on the maximum weight on a group of axles.  The total weight cannot exceed the sum of these limits.
  • Tire Width Limits – Governments set a limit on the amount of weight that can be put on a tire, based on its width.  The total weight of the truck cannot exceed this value times all the tire widths on the truck.
  • Bridge Weight Limits – Some governments (like the US Federal Government) set a limit on the amount of weight that can be put on a group of axles based on the distance between them and the number of axles in each group.
  • Manufacturers Weight Limits – The manufacturer of the truck, trailer, brakes, axles, suspension all set their own limits for how much weight can be carried on the semi truck. By law, the manufacturers’ limits must also be respected even if other limits are higher.

Tare Weight

A typical 5 axle semi truck, like the one depicted below will weigh approximately:

  • Tandem Drive Truck Tractor with Sleeper: 18,000 lbs
  • Van (Box) Trailer 53’ long with 2 axles: 17,650 lbs
  • Total: 35,650 lbs

Payload

To find the amount of weight that a truck can carry, find the limit listed in the table below minus the weight of the truck.  For example:

  • Gross Weight Limit – Tare Weight = Payload
  • (80,000 lbs Federal Limit) – (35,650 lbs truck weight) = (44,350 lbs load allowed)

Gross and Axle Weight Limits in 111 jurisdictions in the USA and Canada

The weights in the below table are for a ‘typical’ 5 axle truck and displays Axle Weights, Gross Weights, Kingpin Compliance, and available Overweight Permits for Divisible Loads.  The combination meets the following conditions:

  • 245” truck wheelbase
  • Kingpin set equally between drive axles
  • Tandems set 41’ from kingpin except RI and CA
  • 53′ trailer unless otherwise noted
  • Tire widths comply with local regulations
  • Manufacturer’s weights are sufficient

Semi Truck Weight – 5 Axle Full Page Access and PDF

Get access to all information on this page and download a PDF version:

  • Printable copy of the information table with 111 jurisdictions
  • Printable copy of the Gross Weights vs. Tare Weights vs. Payload explanation
  • Access to up-to-date online version for one month
  • 11 Pages

Purchase this document for $20.00 USD

All Weights in Pounds

State Ruleset Jurisdiction Bridge Permit Steer Drives Trailer Gross Notes
Alabama US Federal Interstate and Designated US Bridge No 20,000 34,000 34,000 80,000  
Alaska AK Law Designated Alaska Bridge Formula No 20,000 38,000 38,000 87,249  
Alberta AB Provincial Law Primary None No 13,227 37,478 37,478 87,082  
Arizona US Federal Interstate and Designated US Bridge No 20,000 34,000 34,000 80,000  
Arkansas US Federal Interstate and Designated US Bridge No 20,000 34,000 34,000 80,000  
Atlantic Provinces (Canada) Eastern Canada MOU Primary None No 20,062 39,683 39,683 91,491  
British Columbia BC Provincial Law Primary None No 13,227 37,478 37,478 95,019  
California US Federal STAA Green and Blue Routes US Bridge No 20,000 34,000 34,000 80,000 40′ to rear axle. Weight not affected
Colorado US Federal Interstate and Designated US Bridge No 20,000 36,000 36,000 80,000  
Colorado CO Law Non-Interstate Routes Colorado Bridge Formula No 20,000 40,000 40,000 85,000  
Connecticut CT Under 73,000 law Interstate and Design. CT Routes 1-399, 450, 476, 508, 693, 695 None No 22,400 36,000 36,000 73,000  
Connecticut CT Over 73,000 law Interstate and Design. CT Routes 1-399, 450, 476, 508, 693, 695 US Bridge No 22,400 36,000 36,000 80,000  
Delaware US Federal Interstate US Bridge No 20,000 34,000 34,000 80,000  
Delaware DE Law Non-Interstate Routes None No 22,400 36,000 36,000 80,000  
Florida US Federal Interstate US Bridge No View View View View  
Florida FL Law State Roads and Turnpike Florida Bridge Law Table 2 Yes View View View View  
Georgia US Federal Interstate and NHS US Bridge No View View View View  
Georgia GA Law State Roads (Other than Interstate or NHS) US Bridge No View View View View  
Georgia GA Law Under 73,280 Interstate Interstate and NHS None No View View View View  
Hawaii US Federal Interstate US Bridge No View View View View *48′ Trailer Max
Hawaii HI Law State Roads HI Bridge Formula No View View View View *48′ Trailer Max
Idaho US Federal National Network US Bridge No View View View View  
Idaho ID Law National Network US Bridge Yes View View View View  
Idaho ID Law Designated Secondary Highways US Bridge Yes View View View View *48′ Trailer Max
Illinois US Federal Class I and II Highways US Bridge No View View View View  
Indiana US Federal Interstate US Bridge No View View View View  
Indiana IN Law (Under View lbs) All Highways Except Heavy Duty Highways None No View View View View  
Indiana IN Toll Rules Toll Road None No View View View View  
Iowa US Federal Interstate and State Routes US Bridge No View View View View  
Kansas US Federal Interstate US Bridge No View View View View  
Kansas KS State Law Non-Interstate Highways US Bridge No View View View View  
Kentucky US Federal Interstate and Designated US Bridge No View View View View  
Kentucky KY State Law Non-Designated Highways None No View View View View  
Louisiana US Federal Interstate US Bridge No View View View View  
Louisiana LA Law Non-Interstate US Bridge No View View View View  
Maine ME Law – Under View lbs Interstate US Bridge No View View View View  
Maine ME General Law General Law Network ME Table 2 No View View View View  
Maine ME Law – Over View lbs Interstate US Bridge No View View View View  
Manitoba MB Provincial Law Primary None No View View View View  
Manitoba MB Secondary Highways Law Secondary Highways None No View View View View  
Maryland US Federal Interstate and Designated US Bridge No View View View View  
Maryland MD Law Under 73,000 lbs Interstate and Designated US Bridge No View View View View  
Maryland MD Law Under View lbs Non-State Highways US Bridge No View View View View  
Massachusetts US Federal Interstate and Designated US Bridge No View View View View  
Michigan US Federal Interstate and Designated US Bridge No View View View View  
Michigan MI Law Interstate and Designated None No View View View View  
Minnesota US Federal Interstate and Designated US Bridge No View View View View  
Mississippi US Federal Interstate and Designated US Bridge No View View View View  
Missouri US Federal Interstate and Designated US Bridge No View View View View  
Missouri US Federal Non-Interstate US Bridge No View View View View  
Missouri MO Commercial Zones Commercial Zones None No View View View 1View  
Montana US Federal Designated Routes US Bridge No View View View View  
Montana MT Law – Short All NN Routes except US 87 from mile 79.3 to 82.5 US Bridge Yes View View View View  
Montana MT Law – Long All NN Routes except US 87 from mile 79.3 to 82.5 US Bridge Yes View View View View  
Nebraska US Federal Interstate US Bridge No View View View View  
Nebraska NE Law State Designated Highways US Bridge No View View View View  
Nebraska NE Interstate Permit Interstate US Bridge Yes View View View View  
Nevada US Federal Interstate and Designated US Bridge No View View View View  
Nevada NV Shorter Overweight Vehicle (SOV) LCV Routes (Includes permitted vehicles over View lbs) US Bridge Yes View View View View  
New Hampshire US Federal Interstate and Defense Highways US Bridge No View View View View  
New Hampshire NH Over Weight Registration Interstates and Designated State Highways NH Section 266:18 Tables Yes View View View View  
New Jersey US Federal Interstate and 102" / Twin Trailer network US Bridge No View View View View  
New Mexico NM Law Interstate and Designated New Mexico Bridge No View Not Specified View View  
New York US Federal Qualifying and Access Highways US Bridge No View View View View  
New York NY State Law State and Designated Highways US Bridge No View View View View *48′ Trailer Max
New York NY Type 1A – F1 Permit Qualifying and Access Highways None Yes View View View View *48′ Trailer Max
North Carolina US Federal Interstate and Designated US Bridge No View View View View  
North Dakota US Federal Interstate US Bridge No View View View View  
North Dakota ND Non-Designated Other State Highways not otherwise designated US Bridge No View View View View  
North Dakota ND Law – 75 feet 75′ and 105,500 lbs network US Bridge No View View View View  
North Dakota ND Law – 95 Feet 95′ and 105,500 lbs networks US Bridge No View View View View  
North Dakota ND – Interstate with Permit Interstate US Bridge Yes View View View View  
Ohio US Federal Interstate US Bridge No View View View View  
Ohio OH Turnpike Ohio Turnpike Commission Roads None No View View View View  
Ohio OH Non-Interstate Law Non-Interstate OH Bridge Table A No View View View View  
Ohio OH Bridge Compliant Local Non-Interstate US Bridge No View View View View  
Oklahoma US Federal Interstate and Designated US Bridge No View View View View  
Oklahoma OK State Law State Roads US Bridge Yes View View View View  
Ontario ON Provincial Law Primary None No View View View View  
Oregon US Federal Group 1 Routes (Interstates and Major Roads) US Bridge No View View View View  
Oregon OR Extended Weight Permit Group 1 Routes (Interstates and Major Roads) OR Extended Weight Table 2 Yes View View View View  
Pennsylvania US Federal Interstate and Designated US Bridge No View View View View  
Pennsylvania PA Under View Law Interstate and Designated None No View View View View  
Pennsylvania PA Under View Law Non – Interstate and Access Roads None No View View View View  
Quebec QC Provincial Law A.13 Ordinary Class None No View View View View  
Quebec QC Thaw Period Weights A.13 Ordinary Class None No View View View View  
Rhode Island US Federal Interstate and Designated US Bridge No View View View View 41′ to Rear Axle. Weight not affected.
Saskatchewan SK Primary Law Primary None No View View View View  
Saskatchewan SK Secondary Law Municipal Roads None No View View View View  
South Carolina SC Non-Interstate Non – Interstate None No View View View View  
South Carolina SC Interstate under 75,185 lbs Interstate None No View View View View  
South Carolina SC Interstate over View lbs Interstate US Bridge No View View View View  
South Dakota US Federal Interstate and Routes listed in S.D. 32-22-21.2 US Bridge No View View View View  
South Dakota SD Law Interstate and Routes listed in S.D. 32-22-21.2 US Bridge Yes View View View View  
South Dakota SD Law Non-Interstate and Routes listed in S.D. 32-22-21.2 US Bridge No View View View View  
Tennessee US Federal Interstate and Designated US Bridge No View View View View  
Texas US Federal Interstate and Designated US Bridge No View View View View  
Texas TX Permit for Excess Weight State and County Roads None Yes View View View View  
Utah US Federal Interstate and Designated US Bridge No View View View View  
Utah UT Overweight Permit Interstate and Designated US Bridge Yes View View View View  
Vermont US Federal Interstate Only US Bridge No View View View View  
Vermont VT All Products Permit State Highways None Yes View View View View *48′ Trailer Max
Vermont VT State Law State Highways US Bridge No View View View View *48′ Trailer Max
Virginia US Federal Interstate and Designated US Bridge No View View View View  
Virginia VA 46.2-1128 Overweight Non – Interstate Roads US Bridge Yes View View View View  
Washington WA Law Interstate and Designated US Bridge No View View View View  
West Virginia US Federal Interstate US Bridge No View View View View  
West Virginia WV Law US and WV State Routes None No View View View View  
Wisconsin US Federal Interstates and Designated Trunk Highways US Bridge No View View View View  
Wyoming WY Table 1 Comply Interstate, Primary and Secondary Roads US Bridge No View View View View  
Wyoming WY Table 2 Comply Primary and Secondary WY Table 2 No View View View View  

Semi Truck Weight – 5 Axle Full Page Access and PDF

Get access to all information on this page and download a PDF version:

  • Printable copy of the information table with 111 jurisdictions
  • Printable copy of the Gross Weights vs. Tare Weights vs. Payload explanation
  • Access to up-to-date online version for one month
  • 11 Pages

Purchase this document for $20.00 USD

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