Freight Facts and Figures 2008
Table 3-5. Semitrailer Length Limitations on the National Network by State: 2008
In addition to weight restrictions, Federal and state governments place limits on the length and other characteristics of commercial trucks using the road system. Twenty-nine states have semitrailer length limitations on the National Network for conventional combination trucks other than the 48-foot limit set by Federal law for a semitrailer operating in a truck tractor-semitrailer combination.
| State | Length limitation (feet and inches) |
|---|---|
| States not listed | 48-0 |
| Alabama | 53-6 |
| Arizona | 57-6 |
| Arkansas | 53-6 |
| California1 | 48-0 |
| Colorado | 57-4 |
| Delaware | 53-0 |
| Illinois | 53-0 |
| Indiana2 | 48-6 |
| Iowa | 53-0 |
| Kansas | 57-6 |
| Kentucky | 53-0 |
| Louisiana | 59-6 |
| Mississippi | 53-0 |
| Missouri | 53-0 |
| Montana | 53-0 |
| Nebraska | 53-0 |
| Nevada | 53-0 |
| New Mexico | 57-6 |
| North Dakota | 53-0 |
| Ohio | 53-0 |
| Oklahoma | 59-6 |
| Oregon | 53-0 |
| Pennsylvania | 53-0 |
| Rhode Island | 48-6 |
| South Dakota | 53-0 |
| Tennessee | 50-0 |
| Texas | 59-0 |
| Wisconsin3 | 48-0 |
| Wyoming | 57-4 |
1Semitrailers up to 53 feet may also operate without a permit by conforming to a kingpin-to-rearmost axle distance of 38 feet.
2Semitrailers up to 53 feet in length may operate without a permit by conforming to a kingpin-to-rearmost axle distance of 40 feet and 6 inches. Semitrailers that are consistent with 23 CFR 23 658.13(h) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less. .
3Semitrailers up to 53 feet in length may operate without a permit by conforming to a kingpin-to-rearmost axle distance of 41 feet, measured to the center of the rear tandem assembly. Semitrailers that are consistent with 23 CFR 658.13(h) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less.
Note:
The National Network, established by the Surface Transportation Assistance Act of 1982 (PL 97-424) and designated in U.S. Code of Federal Regulations (23 CFR 658), are the routes over which states must allow conventional combination trucks to operate.
Source:
National Archives and Records Administration, Office of Federal Register, Code of Federal Regulations, Title 23: Highways, Part 658, Appendix B.
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