['Size and Weight Limits']
['Sizes and weights']
06/16/2025
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| Dimension | National Network | State and Other Supplemental Highways |
| Width: | 8' 6" | 8' 6" |
| Height: | 14' | 14' |
| Length: | National Network | On All Other |
| Straight Trucks | 45' | 45' |
| Straight truck and trailer | 65' | 65' |
| Tractor-semitrailer combinations | No limit | No limit |
| Semitrailer | 59' 6" | 59' 6" |
| Tractor-twin-trailer combination | No limit | No limit |
| Trailers of twin-trailer combinations | 28' 6" | 28' 6" |
| Stinger-steered boat-transporter | 75' | 75' |
| Overhang limitations | 3' front, 4' rear | 3' front, 4' rear |
| Stinger-steered auto-transporter | 80' | 80' |
| Overhang limitations | 4' front, 6' rear | 4' front, 6' rear |
| Weight: | Interstate and Defense Highways | On All Other |
| Steer axle | 20,000 | 20,000 |
| Single axle | 20,000 | 20,000 |
| Tandem axle | 34,000 | 34,000 |
| Gross vehicle weight | 80,000 | 85,500 |
| Per wheel | 10,000 | 10,000 |
| Tolerances | None | None |
| APU allowance | 400 | 400 |
| Natural gas allowance | 2,000 | 2,000 |
['Size and Weight Limits']
['Sizes and weights']
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Copyright 2025 J. J. Keller & Associate, Inc. For re-use options please contact copyright@jjkeller.com or call 800-558-5011.