['Size and Weight Limits']
['Sizes and weights']
03/12/2025
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| Dimension | National Network | State and Other Supplemental Highways |
| Width: | 9' | 9' |
| Height: | 14' | 14' |
| Length: | National Network | State and Other Supplemental Highways |
| Bus | ||
| Articulated bus | N/S | 65' |
| Straight Trucks | 45' | 45' |
| Straight truck and trailer | 65' | 65' |
| Tractor-semitrailer combinations | N/S | 65' |
| Semitrailer | 48' | 48' |
| Tractor-twin-trailer combination | N/S | 65' |
| Trailers of twin-trailer combinations | ||
| Boat-transporter combination | ||
| Overhang limitations | ||
| Stinger-steered boat-transporter | ||
| Overhang limitations | ||
| Auto-transporter | ||
| Overhang limitations | ||
| Stinger-steered auto-transporter | ||
| Overhang limitations | ||
| Saddlemount | ||
| General overhang limitations | ||
| Drawbar | ||
| Dromedary | ||
| Kingpin to rearaxle | ||
| Length special limitations or restrictions | ||
| Weight: | Interstate and Defense Highways | State and Other Supplemental Highways |
| Steer axle | 20,000 | 20,000 |
| Single axle | 20,000 | 20,000 |
| Tandem axle | 34,000 | 34,000 |
| Tridem axle | ||
| Gross vehicle weight | 80,000 subject to federal bridge formula | 88,000 or state bridge formula |
| Load per inch width of tire | ||
| Per wheel | 10,000 | 10,000 |
| Tolerances | ||
| APU allowance | ||
| Natural gas allowance | ||
| Weight special limitations or restrictions | As posted on bridges. | |
Bridge rules
FEDERAL BRIDGE FORMULA: The maximum weight of any vehicle or combination of vehicles and load may not exceed that which is determined by the following formula:
On non-interstate highways, the total gross weight, in pounds, imposed on any public road, street, or highway, other than interstate highways, within the state by a vehicle or combinations of vehicles shall not exceed that determined by the formula:
| When the distance between the first and last axle is at least 8 feet and over and where W = maximum weight in pounds rounded to the nearest 500 lb. L = Distance in feet between the extremes of any group of two or more consecutive axles, to the nearest foot; provided, also that the overall gross weight does not exceed 88,000 pounds. |
['Size and Weight Limits']
['Sizes and weights']
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