Code of Federal Regulations > Title 23 > Chapter I > Part 658 > Appendix Appendix B - Appendix B to Part 658

Regulations last checked for updates: Apr 23, 2024

Title 23 - Highways last revised: Jan 18, 2024

Appendix Appendix B - Appendix B to Part 658—Grandfathered Semitrailer Lengths

State	Feet and inches
Alabama	53–6
Alaska	48–0
Arizona	57–6
Arkansas	53–6
California	¹ 48–0
Colorado	57–4
Connecticut	48–0
Delaware	53–0
District of Columbia	48–0
Florida	48–0
Georgia	48–0
Hawaii	48–0
Idaho	48–0
Illinois	53–0
Indiana	² 48–6
Iowa	53–0
Kansas	57–6
Kentucky	53–0
Louisiana	59–6
Maine	48–0
Maryland	48–0
Massachusetts	48–0
Michigan	48–0
Minnesota	48–0
Mississippi	53–0
Missouri	53–0
Montana	53–0
Nebraska	53–0
Nevada	53–0
New Hampshire	48–0
New Jersey	48–0
New Mexico	57–6
New York	48–0
North Carolina	48–0
North Dakota	53–0
Ohio	53–0
Oklahoma	59–6
Oregon	53–0
Pennsylvania	53–0
Puerto Rico	48–0
Rhode Island	48–6
South Carolina	48–0
South Dakota	53–0
Tennessee	50–0
Texas	59–0
Utah	48–0
Vermont	48–0
Virginia	48–0
Washington	48–0
West Virginia	48–0
Wisconsin	³ 48–0
Wyoming	57–4

¹ Semitrailers up to 53 feet may also operate without a permit by conforming to a kingpin-to-rearmost axle distance of 38 feet. Semitrailers that are consistent with 23 CFR 658.13(g) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less.

² Semitrailers up to 53 feet in length may operate without a permit by conforming to a kingpin-to-rearmost axle distance of 40 feet 6 inches. Semitrailers that are consistent with 23 CFR 658.13(g) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less.

³ Semitrailers up to 53 feet in length may operate without a permit by conforming to a kingpin-to-rear axle distance of 41 feet, measured to the center of the rear tandem assembly. Semitrailers that are consistent with 23 CFR 658.13(g) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less.

[53 FR 2599, Jan. 29, 1988, as amended at 54 FR 1931, Jan. 18, 1989; 62 FR 10181, Mar. 5, 1997; 72 FR 7749, Feb. 20, 2007]

authority: 23 U.S.C. 127 and 315; 49 U.S.C. 31111,31112,and; sec. 347, Pub. L. 108–7, 117 Stat. 419; sec. 756, Pub. L. 109–58, 119 Stat. 829; sec. 1309, Pub. L. 109–59, 119 Stat. 1219; sec. 115, Pub. L. 109–115, 119 Stat. 2408; sec. 5516, Pub. L. 114–94, 129 Stat. 1312, 1557; 49 CFR 1.81(a)(3)

source: 49 FR 23315, June 5, 1984, unless otherwise noted.