Truck Height and Length Limits by State

Legal height

15 feet, including the load. On the Dalton and Elliott Highways between the Fox Weigh Station and Prudhoe Bay, 17 feet.

Semitrailer length

53 feet cargo-carrying length for a semitrailer. On National Highway System routes, a truck tractor with one cargo-carrying vehicle has no overall length limit.

Other lengths

A power vehicle may be 45 feet. Other combinations may be 75 feet overall, with no more than two cargo-carrying vehicles. A load may reach 3 feet past the front and 4 feet past the rear.

17 AAC 25.012

Legal height

14 feet, unladen or with a load, unless a special permit allows more.

Semitrailer length

The state may not set a limit below 53 feet 6 inches for a semitrailer or trailer in combination with a truck tractor. A semitrailer or trailer in a tractor-semitrailer-trailer combination may be 28 feet.

Other lengths

A single truck may be 40 feet, and a bus 45 feet. A motor vehicle may pull no more than two trailing vehicles. A combination that hauls cars may reach 4 feet past the front and 6 feet past the rear, up to 80 feet.

Ark. Code §§ 27-35-207 and 27-35-208 Ark. Code § 27-35-207, height

We read this on FindLaw's copy of the Arkansas Code, current as of March 28, 2024. Check the state law for the latest text.

Legal height

14 feet. A vehicle or load over 13 feet 6 inches may run only on highways that the owner or operator deems safe for it.

Semitrailer length

48 feet. A semitrailer up to 53 feet counts if its rearmost axle is 40 feet or less from the kingpin, or 38 feet or less for a single axle. This applies to combinations on the Interstate and on routes the state or local authorities designate.

Other lengths

In a three-unit combination, the semitrailer and the trailer may each be up to 28 feet 6 inches.

Cal. Veh. Code §§ 35250 and 35401.5 Veh. Code § 35250

We read this on a public copy of the code (public.law), checked October 12, 2026. Check the state law for the latest text.

Legal height

14 feet 6 inches. The state designates highways with structures under that clearance, and you may not drive under one that is lower than your height.

Semitrailer length

The section we read sets no separate semitrailer length. A loaded tractor-semitrailer may not exceed 75 feet overall.

Other lengths

A single motor vehicle may not exceed 45 feet.

C.R.S. § 42-4-504

We read this on a public copy of the law (public.law), accessed May 26, 2025. Check the state law for the latest text.

Legal height

14 feet, including the load. A vehicle may not go under a bridge or structure if it is taller than the posted height.

Semitrailer length

48 feet, and 65 feet for the tractor and semitrailer together, on roads other than interstate highways and the federal-aid highways the state names. We did not find a semitrailer limit for those highways in this section.

Other lengths

A single motor vehicle may be 45 feet. Off the interstate and those highways, a combination may have no more than two units and may be 65 feet.

Haw. Rev. Stat. § 291-34

Legal height

14 feet. A load of cylindrical hay bales may be 14 feet 6 inches.

Semitrailer length

59 feet 6 inches in a tractor-semitrailer combination.

Other lengths

In a tractor, semitrailer and trailer combination, the semitrailer and the trailer may each be up to 28 feet 6 inches.

K.S.A. 8-1904

Legal height

14 feet, unladen or with a load. A load of hay or straw may be 15 feet 6 inches in some farm trips.

Semitrailer length

53 feet for a semitrailer in a tractor-semitrailer combination, not counting parts that do not carry a load. There is no limit on the overall length of that combination.

Other lengths

A single truck or bus may be 55 feet. With two trailers behind a tractor, each trailer may be 28 feet 6 inches, or 61 feet combined. Other combinations may be 75 feet.

MCA 61-10-103 and 61-10-104 MCA 61-10-103, height

Legal height

14 feet 6 inches, with or without load. Some exceptions go to 15 feet 6 inches, such as combines and baled forage loads.

Semitrailer length

53 feet, including the load, for a semitrailer in a truck-tractor single semitrailer combination that was not lawfully in the state on December 1, 1982. An older semitrailer has no stated limit.

Other lengths

A truck may be 45 feet long. A baled forage semitrailer may be 59 feet 6 inches.

Good to know

No one has to raise a bridge or wire for a vehicle over 12 feet 6 inches. The owner and operator are liable for damage.

Neb. Rev. Stat. §§ 60-6,289 and 60-6,290 § 60-6,289, height

Legal height

14 feet, including the load. A load of baled hay may be 15 feet. It is unlawful to go where the clearance is lower than the vehicle and load.

Semitrailer length

This section sets no semitrailer limit. It tells the state to allow combinations over 70 feet by regulation. We did not read those regulations.

Other lengths

A motortruck may be 40 feet, and a bus 45 feet. A combination may be 70 feet.

NRS 484D.605 and 484D.615

Legal height

14 feet.

Semitrailer length

57 feet 6 inches for a semitrailer in a tractor-semitrailer combination on the interstate, on qualifying federal-aid highways and on highways the state names. A semitrailer or trailer in a three-unit combination may be 28 feet 6 inches there.

Other lengths

A vehicle may be 40 feet, and a motor home 45 feet. Other combinations may be 65 feet overall. A truck tractor and semitrailer may pull one trailer.

NMSA 1978, § 66-7-404

We read this on FindLaw's copy of the New Mexico Statutes, current as of January 1, 2024. Check the state law for the latest text.

Legal height

14 feet. The state does not have to raise a structure for a vehicle taller than 12 feet 6 inches, and the owner or operator of a vehicle taller than that is liable for damage it causes to a structure.

Semitrailer length

53 feet. A tractor with one semitrailer of 53 feet or less may exceed the 60-foot overall limit that applies to other combinations.

Other lengths

A single vehicle with two or more axles may not exceed 40 feet overall, with a few exceptions.

G.S. 20-116

Legal height

14 feet, loaded or not. This does not change any bridge or underpass lower than 14 feet.

Semitrailer length

53 feet for a trailer or semitrailer, including the load. A trailer registered in North Dakota before July 1, 1987 may be 60 feet.

Other lengths

A single unit vehicle with two or more axles may be 50 feet. A two-unit combination may be 75 feet. A combination of two, three or four units may be 110 feet on four-lane divided highways and on highways the state names.

Good to know

A tractor and semitrailer, or a tractor, semitrailer and trailer, on the interstate and some federal-aid routes is left out of the length limits where federal law requires it.

N.D.C.C. § 39-12-04

Legal height

13 feet 6 inches on a county road. 14 feet on a turnpike, interstate, U.S. highway or state highway. A permit can allow more.

Semitrailer length

53 feet on the interstate and on four-lane divided federal-aid highways. A semitrailer over 53 feet and up to 59 feet 6 inches follows § 14-118. On other roads, a semitrailer may be 53 feet, and a trailer behind a semitrailer 29 feet.

Other lengths

A single truck or a single bus may be 45 feet. Other combinations may be 70 feet on all roads.

Good to know

Owners and drivers of a vehicle or load over 13 feet 6 inches are liable for damage to structures over the highway.

47 O.S. § 14-103

Legal height

14 feet, including the load. The owner or driver must still make sure there is enough room to pass under.

Semitrailer length

The table in the law says 40 feet for a vehicle in a combination and 60 feet for a whole combination. Road authorities can raise those limits by rule, and the law lets a load run longer under their rules. Check ODOT's rules and permits for a 53-foot trailer. We did not read those rules.

Other lengths

A vehicle by itself may be 40 feet. A combination with a stinger-steered pole trailer may be 65 feet. A load on a semitrailer may reach 5 feet past the rear.

ORS 818.080 and 818.100 ORS 818.100, exemptions

We read this on oregon.public.law's copy of the Oregon Revised Statutes, current through early 2026. Check the state law for the latest text.

Legal height

14 feet, including the load. Trailers that carry baled feed may be 15 feet. Farm machinery and fire department equipment have no height limit.

Semitrailer length

53 feet for the semitrailer in a tractor-semitrailer combination on the interstate and the state trunk highway system, unless signed otherwise.

Other lengths

A motor vehicle may be 45 feet. A straight truck and trailer may be 80 feet there. A semitrailer-semitrailer or semitrailer-trailer combination may be 81 feet 6 inches, not counting the tractor, if neither unit is over 45 feet.

SDCL §§ 32-22-5, 32-22-8.1 and 32-22-14 SDCL 32-22-14, height

Legal height

14 feet. If your vehicle is higher than 13 feet 6 inches, you must make sure it clears every structure in its path. The owner is strictly liable for damage to a bridge or underpass caused by the height.

Semitrailer length

59 feet, not counting the towing device, in a truck-tractor and semitrailer combination.

Other lengths

In a truck-tractor, semitrailer and trailer combination, a semitrailer or trailer may be up to 28 feet 6 inches.

Tex. Transp. Code §§ 621.204 and 621.207

We read this on a public copy of the law (public.law). Check the state law for the latest text.

Legal height

14 feet, measured from the road surface to the top of the vehicle or load.

Semitrailer length

53 feet for a semitrailer. Double trailer combinations may be 61 feet.

Other lengths

UDOT's page links a table with more lengths and a calculator that we did not read.

UDOT standard vehicle dimensions

We read this on UDOT's Truck Smart permit page. The Utah Code size sections could not be read. Check the state law for the latest text.

Legal height

14 feet above the surface the vehicle stands on, unladen or with load.

Semitrailer length

53 feet in a tractor and semitrailer combination.

Other lengths

A tractor with two trailers may have trailers totaling 61 feet. A truck and trailer may be 75 feet overall. A single vehicle may be 40 feet.

RCW 46.44.020 and 46.44.030 RCW 46.44.020

Legal height

14 feet, unladen or with a load.

Semitrailer length

60 feet for a semitrailer in a tractor-semitrailer combination. With a trailer or a second semitrailer, the semitrailer may be 48 feet and the trailer or second semitrailer 40 feet, and the two together 81 feet.

Other lengths

A single vehicle may be 60 feet. Other combinations may be 85 feet. A combination may have no more than three single vehicles.

Wyo. Stat. § 31-18-802

Legal height

13 feet 6 inches, including the load.

Semitrailer length

57 feet for the semitrailer in a tractor-semitrailer combination. A semitrailer over 53 feet 6 inches may run only on the highways the state designates. It also needs a kingpin no more than 41 feet from the rear axle and a rear underride guard.

Other lengths

A single vehicle may be 40 feet, and a motor home 45 feet. Each semitrailer or trailer in a tractor-semitrailer-trailer combination may be 28 feet 6 inches.

Ala. Code § 32-9-20

We read this on FindLaw's copy of the Code of Alabama, current as of December 30, 2024. Check the state law for the latest text.

Legal height

13 feet 6 inches, unladen or with a load. The state and cities also name highways where up to 14 feet is allowed without a permit.

Semitrailer length

57 feet 6 inches for a semitrailer in a tractor-semitrailer combination. If the semitrailer is over 53 feet, the whole combination may not be over 65 feet, except on the national truck network and on routes a city names.

Other lengths

A single vehicle may be 40 feet long, with exceptions. A truck-semitrailer combination may be 65 feet. A semitrailer or trailer in a three-unit combination may be 28 feet 6 inches.

A.R.S. §§ 28-1094 and 28-1095 A.R.S. § 28-1094, height

Legal height

13 feet 6 inches, with the load. A vehicle over that needs a special permit, and loose hay or straw is left out. The fine is $1,500.

Semitrailer length

48 feet. A trailer over 48 feet and up to 53 feet may run if the kingpin is no more than 43 feet from the center of the rear axle. It may run on the interstate, on U.S. and state routes numbered 1 to 399 and on routes 450, 476, 508, 693 and 695. It may also use state and local roads for up to one mile from them, for terminals, food, fuel, repair, rest, loading and unloading.

Other lengths

A single unit vehicle may be 45 feet. A truck and trailer combination over 65 feet needs a permit, but a tractor-trailer unit is left out of that limit.

Good to know

The fine for a length violation is $500.

Conn. Gen. Stat. §§ 14-262 and 14-264

Legal height

13 feet 6 inches, including the load.

Semitrailer length

53 feet on interstate highways, federal-aid primary highways and U.S. numbered routes.

Other lengths

On those roads, a trailer in a tractor-semitrailer-trailer combination may be 29 feet, a single vehicle 40 feet and a bus 45 feet. On other roads, a single vehicle may be 40 feet and a combination 60 feet, so a combination with a 53-foot trailer may not fit there.

21 Del. C. §§ 4502 and 4503

Legal height

13 feet 6 inches. An automobile transporter may be 14 feet.

Semitrailer length

48 feet. A semitrailer over 48 feet and up to 57 feet may run on public roads, except roads the state or local authorities restrict, if the kingpin is 41 feet or less from the center of the rear axle and it has a rear underride guard.

Other lengths

Length limits apply to semitrailers and trailers, not to the tractor or the whole combination. A combination may have one tractor and up to two trailing units.

F.S. § 316.515

Legal height

13 feet 6 inches, unladen or with a load. A car carrier on the interstate may be 14 feet.

Semitrailer length

53 feet for the semitrailer in a tractor-semitrailer combination, unless signs are posted that limit it.

Other lengths

A semitrailer or trailer in a three-unit combination may be 28 feet. On roads other than the interstate and the National Highway System, a combination may be up to 100 feet unless signs say otherwise. We did not find a single-vehicle limit in the sections we read.

O.C.G.A. §§ 32-6-22 and 32-6-24 O.C.G.A. § 32-6-22, height

We read this on FindLaw's copy of the Official Code of Georgia, current as of March 28, 2024. Check the state law for the latest text.

Legal height

13 feet 6 inches, measured from the underside of the tire to the top of the vehicle, with the load.

Semitrailer length

53 feet on Class I highways. A semitrailer over 48 feet may not have more than 45 feet 6 inches between the kingpin and the center of the rear axle, except for livestock trailers.

Other lengths

A single vehicle may be 42 feet long, with exceptions such as semitrailers. In a tractor with two trailing units, each trailing unit may be 28 feet 6 inches.

Good to know

The overall length limit does not apply to combinations on Class I highways when the semitrailer rules are met. The state can restrict length on its roads.

625 ILCS 5/15-103 and 5/15-107 625 ILCS 5/15-103, height

Legal height

13 feet 6 inches. The limit does not promise that every road has that much clearance.

Semitrailer length

We did not find a semitrailer length limit in this chapter. Indiana issues permits for semitrailers that go over its width and length limits, so check the rules and permits for a 53-foot trailer.

Other lengths

A single vehicle under its own power may be 40 feet, and a recreational vehicle 45 feet.

Ind. Code §§ 9-20-3-3 and 9-20-3-4 Ind. Code § 9-20-3-3, height

We read this on FindLaw's copy of the Indiana Code, current as of January 1, 2026. Check the state law for the latest text.

Legal height

13 feet 6 inches, with or without load. A vehicle that hauls cars, light trucks, pickups or RV chassis may be 14 feet. A load of hay, straw or stover may be 14 feet 6 inches.

Semitrailer length

53 feet for a trailer or semitrailer in a truck tractor-semitrailer combination, not counting retractable extensions that support the load.

Other lengths

A single truck may be 45 feet long, bumper to bumper. Four-vehicle combinations are not allowed, except saddle-mounted power units up to 97 feet.

Iowa Code §§ 321.456 and 321.457 Iowa Code § 321.456, height

Legal height

13 feet 6 inches. Car haulers may be 14 feet on interstates and designated highways.

Semitrailer length

53 feet for a semitrailer in a single-semitrailer combination on interstates and designated highways, with any size tractor. On all other state-maintained highways, a motor vehicle with a trailer or semitrailer may be 65 feet overall.

Other lengths

Dual trailers may be 28 feet each in a tractor-semitrailer-trailer or tractor-semitrailer-semitrailer combination, with no more than two towed units. A motor truck or single unit vehicle may be 45 feet. A 48-foot trailer may have up to 5 feet of rear overhang on designated highways.

Good to know

The cabinet's page says the longer vehicles may run within 5 driving miles of a designated highway, and within 15 miles of an interstate or parkway exit.

KRS 189.222 and 603 KAR 5:070

We read this on the Kentucky Transportation Cabinet's legal dimensions page, which cites KRS 189.222 and 603 KAR 5:070. We did not read the statute. Check the state law for the latest text.

Legal height

13 feet 6 inches, with the load. A vehicle that runs only on the interstate system may be 14 feet, with reasonable access within one road mile to terminals and to food, fuel, repair and rest.

Semitrailer length

59 feet 6 inches for the semitrailer in a tractor-semitrailer combination.

Other lengths

A single vehicle may be 45 feet. A trailing unit on a single vehicle may be 30 feet. The semitrailer or trailer in a tractor-semitrailer-trailer combination may be 30 feet.

Good to know

The owner pays for damage to a bridge or underpass caused by the height of the vehicle. The operator of a vehicle over 13 feet 6 inches must make sure it clears each structure.

La. R.S. 32:381 and 32:382 La. R.S. 32:381, height

Legal height

13 feet 6 inches, measured straight up from level ground, for a vehicle with a permanent or temporary structural part that tall.

Semitrailer length

A semitrailer over 45 feet and up to 48 feet is allowed only if the distance between the rear axle centers of the tractor and the semitrailer is no more than 38 feet, and the combination is no more than 69 feet. A single semitrailer over 48 feet and up to 53 feet may run on a state highway network if it meets conditions. They include a wheelbase of 45 feet 6 inches or less, a rear underride guard, and no more than 74 feet overall off the national network.

Other lengths

A vehicle may be 45 feet. A combination may be 65 feet unless the law allows more. On the interstate and qualifying federal-aid highways, a tractor and trailer may be over 65 feet if the trailer is 48 feet or less.

Good to know

A violation is a traffic infraction with a forfeiture of $25 to $1,000.

29-A M.R.S. §§ 2380 and 2390 29-A M.R.S. § 2380, height

Legal height

13 feet 6 inches, for the vehicle and its load. A vehicle combination that carries farm equipment may go up to 16 feet in some cases.

Semitrailer length

48 feet for a single semitrailer in a tractor-semitrailer combination, with no overall length limit. We did not find a 53-foot rule in this section.

Other lengths

A semitrailer and trailer (double) may each be 28 feet. Doubles may run only on the interstate and routes the state designates, plus the short way to a terminal. A single unit truck may be 40 feet.

Good to know

Federal law sets a floor for semitrailers on the National Network (23 CFR 658.13). Check Maryland's regulations and permits before you pull a 53-foot trailer.

Md. Code, Transportation §§ 24-104 and 24-104.1 Transportation § 24-104, height

Legal height

13 feet 6 inches, with the load. A special permit can allow more.

Semitrailer length

53 feet for a semitrailer in a semitrailer unit or a trailer in a tractor-trailer unit.

Other lengths

A truck may be 40 feet long. A trailer or semitrailer in tandem may be 28 feet.

Good to know

Going over these sizes needs a special permit from the board or officer in charge of the way.

Mass. Gen. Laws ch. 90, § 19

Legal height

13 feet 6 inches.

Semitrailer length

50 feet on most roads. On a designated highway there is no overall length limit for a tractor-semitrailer, and the semitrailer may be 53 feet.

Other lengths

Cities, villages and counties may bar stops by vehicles with a semitrailer longer than 50 feet, except on designated routes, in an emergency, or to reach shippers, receivers, warehouses and terminals.

MCL 257.719

Legal height

13 feet 6 inches. A double-deck bus may be 14 feet 3 inches with an annual permit.

Semitrailer length

48 feet. A single semitrailer may be longer, up to 53 feet, if the kingpin is 43 feet or less from the center line of the rear axle group.

Other lengths

In a three-vehicle combination, a semitrailer or trailer may be up to 28 feet 6 inches, not counting some equipment at the front end.

Minn. Stat. § 169.81

Legal height

13 feet 6 inches, unladen or with a load. The state does not have to raise any structure for a vehicle over 12 feet 6 inches. The motor carrier or operator pays for damage to a structure caused by a vehicle over 12 feet 6 inches.

Semitrailer length

53 feet for a semitrailer in a tractor-semitrailer combination, and for a trailer drawn by a motor vehicle.

Other lengths

A single vehicle may be 40 feet, and a motor home 45 feet. A semitrailer or trailer in a three-unit combination may be 30 feet. No combination may have more than two units besides the towing vehicle.

Miss. Code §§ 63-5-17 and 63-5-19 Miss. Code § 63-5-17, height

We read this on FindLaw's copy of the Mississippi Code, current as of January 1, 2025. Check the state law for the latest text.

Legal height

13 feet 6 inches, including the load. A manufactured home or modular building may be 14 feet 6 inches, and needs an escort over 13 feet 6 inches.

Semitrailer length

53 feet. A semitrailer over 48 feet is limited to 41 feet from kingpin to the rear axle, needs rear end protection, and may run only on interstate and defense highways or highways the commissioner designates.

Other lengths

A single unit vehicle or bus may be 45 feet. A trailer in a two-trailer combination may be 28 feet.

RSA 266:10 and 266:11 RSA 266:10, height

Legal height

13 feet 6 inches, including the load or contents.

Semitrailer length

53 feet for a vehicle towed by a power unit that does not carry cargo, if it meets the law's conditions. They include a kingpin no more than 41 feet from the rear axle, a rear-end protection device and a kingpin set back of no more than 3.5 feet. A trailer over 48 feet may run only on the roads the state's rules name.

Other lengths

A vehicle may be 40 feet, or 50 feet when it hauls poles or other items that cannot be taken apart. A combination whose power unit carries cargo may be 62 feet.

N.J.S.A. 39:3-84

We read this on FindLaw's copy of the New Jersey Statutes, current as of January 1, 2024. Check the state law for the latest text.

Legal height

13 feet 6 inches, with or without load.

Semitrailer length

53 feet for a semitrailer in a commercial tractor-semitrailer combination.

Other lengths

An automobile transporter or boat transporter may be 65 feet. A stinger-steered one may be 75 feet.

R.C. § 5577.05

Legal height

13 feet 6 inches, including any load. A vehicle over that height with no valid permit faces a $500 fine.

Semitrailer length

53 feet for a single trailer towed by a truck or truck tractor. The kingpin may be no more than 41 feet from the center line of the rear axle or axle group.

Other lengths

A motor vehicle may be 40 feet, and a bus, school bus or motor home 45 feet. Each trailer of a double trailer may be 28 feet 6 inches.

75 Pa.C.S. §§ 4922 and 4923 75 Pa.C.S. § 4922, height

Legal height

162 inches (13 feet 6 inches), including the load. The fine is $500 for each inch over, or part of an inch.

Semitrailer length

53 feet, not counting bumpers and accessories. A semitrailer over 48 feet 6 inches may run only on the interstate and routes the state designates.

Other lengths

A truck may be 40 feet. A combination of three units is allowed only on the interstate and designated roads, and each trailing unit may be 28 feet 6 inches.

R.I. Gen. Laws §§ 31-25-4, 31-25-5 and 31-25-6 § 31-25-4, height

Legal height

13 feet 6 inches, unladen or with a load. An auto transporter, or a heavy truck that hauls other heavy trucks in a saddle mount, may be 14 feet with a free routing permit.

Semitrailer length

53 feet in a two-unit combination on the interstate and on other qualifying highways. A 53-foot trailer needs a rear underride guard, and the kingpin may be no more than 41 feet from the rear axle.

Other lengths

A trailer in a three-unit combination may be 28 feet 6 inches. A single motor vehicle may be 40 feet. There is no overall length limit on combinations, except where the article says otherwise.

S.C. Code §§ 56-5-4060 and 56-5-4070

Legal height

13 feet 6 inches, including any load.

Semitrailer length

52 feet for the towed vehicle in a tractor-semitrailer or trailer combination, measured from the point where it attaches to the tractor. If it is over 48 feet, the kingpin may be no more than 41 feet from a point midway between the two rear axles, with some load exceptions.

Other lengths

A straight truck may be 45 feet, and a straight truck with a trailer 65 feet. Twin trailers may run on the national network if each is 28 feet 6 inches or less.

Tenn. Code §§ 55-7-201 and 55-7-202 Tenn. Code § 55-7-202, height

We read this on FindLaw's copy of the Tennessee Code, current as of January 2, 2024. Check the state law for the latest text.

Legal height

13 feet 6 inches, including the load.

Semitrailer length

53 feet on the interstate, on qualifying federal-aid highways and on highways leading to them for up to one mile, with no overall length limit. A trailer over 48 feet there needs a rear-end protective device. The kingpin may be no more than 41 feet from the center of the rearmost axle group.

Other lengths

A motor vehicle with no trailer may be 46 feet. A vehicle with a trailer or semitrailer may be 75 feet without a permit. A trailer in a tractor-semitrailer-trailer combination may be 28 feet on those highways.

23 V.S.A. §§ 1431 and 1432 23 V.S.A. § 1431, height

Legal height

13 feet 6 inches, loaded or unloaded. The state does not have to provide clearance over 12 feet 6 inches, and the driver or owner pays for damage to a bridge or structure.

Semitrailer length

A tractor-semitrailer combination may exceed 65 feet if the semitrailer is 53 feet or less and the distance from the kingpin to the rearmost axle (or the midpoint of the rear tandem) is 41 feet or less.

Other lengths

No motor vehicle longer than 40 feet may run on a highway, except buses and motor homes. A combination may not exceed 65 feet in total, apart from the tractor-semitrailer exception.

Va. Code §§ 46.2-1110 and 46.2-1112 Va. Code § 46.2-1112

Legal height

13 feet 6 inches, with the load. The owner pays for damage to a bridge or structure with less clearance.

Semitrailer length

48 feet on the interstate and the highways the state names. A semitrailer may be 53 feet if the axle spacing between the tractor's rear axle and the semitrailer's front axle is no more than 37 feet. There is no overall length limit there.

Other lengths

A motor vehicle may be 40 feet, and a motor home or school bus 45 feet. Other combinations may be 55 feet, with no more than two units. A trailer in a three-unit combination may be 28 feet. The state publishes a yearly map of the length allowed on each highway.

W. Va. Code § 17C-17-4

Legal height

13 feet 6 inches, as a WisDOT news release says for common vehicles. We could not read the statute's height section.

Semitrailer length

48 feet for a semitrailer or trailer in a two-vehicle combination. 53 feet for a semitrailer with a kingpin-to-axle length of 43 feet or less, on the highways the state designates. A tractor-semitrailer combination may be 75 feet, with no overall limit on designated highways.

Other lengths

Each trailer in a double bottom may be 28 feet 6 inches on designated highways. WisDOT's news release gives 45 feet for a single vehicle and 70 feet for a truck and trailer.

Wis. Stat. § 348.07(2)

We read this on a WisDOT news release (July 2025) for height and the single vehicle and truck-and-trailer lengths, and the Wisconsin Legislature's text of s. 348.07(2) for semitrailers. Check the state law for the latest text.

Legal height

14 feet on the Interstate and on routes the state designates. 13 feet 6 inches on all other highways, except that a vehicle carrying automobiles may be 14 feet.

Semitrailer length

On the Interstate, the semitrailer may be 53 feet, and the combination has no overall limit beyond the tractor plus the semitrailer. On other highways, a tractor-semitrailer combination may not exceed 60 feet.

Other lengths

A single motor vehicle may not exceed 45 feet, except as the section provides.

RSMo 304.170