['Size and Weight Limits']
['Sizes and weights']
07/19/2024
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| Dimension | National Network | State and Other Supplemental Highways |
| Width: | 8' 6" | 8' 6" |
| Height: | 13' 6" | 13' 6" |
| Length: | National Network | All Highways |
| Bus | 45' | 45' |
| Articulated bus | 65' | 65' |
| Straight Trucks | 40' Permanently installed specialized equipment used for lifting, reaching, pumping, or spraying are allowed an additional 5' overhang. | 40' Permanently installed specialized equipment used for lifting, reaching, pumping, or spraying are allowed an additional 5' overhang. |
| Straight truck and trailer | 60' | 60' |
| Tractor-semitrailer combinations | No limit | No limit |
| Semitrailer | 53' see KPRA | 53' see KPRA |
| Tractor-twin-trailer combination | No limit | No limit |
| Trailers of twin-trailer combinations | 28' 6" | 28' 6" |
| Boat-transporter combination | ||
| Overhang limitations | ||
| Stinger-steered boat-transporter | ||
| Overhang limitations | ||
| Auto-transporter | 75 | 75 |
| Overhang limitations | 3' front, 4' rear | 3' front, 4' rear |
| Stinger-steered auto-transporter | 75 | 75 |
| Overhang limitations | 3' front, 4' rear | 3' front, 4' rear |
| Saddlemount | ||
| General overhang limitations | ||
| Drawbar | 15' | 15' |
| Dromedary | ||
| Kingpin to rearaxle | 43' To rearmost axle. Motorsports combinations 46' | 43' To rearmost axle. Motorsports combinations 46' |
| Length special limitations or restrictions | ||
| Weight: | Interstate and Defense Highways | All Highways |
| Steer axle | 20,000 Not to exceed 800 lb/in. rim width | 20,000 Not to exceed 800 lb/in. rim width |
| Single axle | 20,000 | 20,000 |
| Tandem axle | 34,000 | 34,000 |
| Tridem axle | 48,000 50,000 lb with lift axle | 48,000 50,000 lb with lift axle |
| Gross vehicle weight | 80,000 90,000 lb on toll road | 80,000 90,000 lb on toll road |
| Load per inch width of tire | 800 rim width | 800 rim width |
| Per wheel | ||
| Tolerances | None | None |
| APU allowance | 400 | 400 |
| Natural gas allowance | 2,000 | 2,000 |
| Weight special limitations or restrictions | ||
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:
['Size and Weight Limits']
['Sizes and weights']