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North Carolina Oversize Permit Cost: Worked Examples

North Carolina prices a single-trip permit per over-legal dimension, not per permit. Four worked moves count the dimensions and add the escorts.

Cover illustration: North Carolina Oversize Permit Cost: Worked Examples

By Evan Reid, Founder of Haul Handbook · Updated Jul 30, 2026

North Carolina does not price a permit. It prices a count. G.S. 20-119 charges

$12.00

for each dimension over the lawful dimension, and the dimensions it counts are height, length, width and weight. One over-legal dimension is one charge. Two is two. Every figure below renders with its official source on the North Carolina oversize and overweight permits page, and this guide walks four moves through the count. To see which states call your load oversize before you price anything, run it through the oversize permit cost estimator.

The limits decide the count

The fee only makes sense after the limits do, because the limits decide how many dimensions you are paying for. North Carolina publishes one statewide size and weight table rather than separate interstate and non-interstate versions, and three of its numbers sit off the regional median.

Width is 102 inches on every road in the state. Height is 14 feet, six inches above the 13 feet 6 inches most eastern states publish, which you can check against the rest of the country on the oversize permit costs by state table. Length is 40 feet for a single vehicle and 60 feet for a combination, except that a truck tractor pulling a semitrailer of 53 feet or less has no overall length limitation on any road. Gross weight tops out at 80,000 pounds, with 20,000 pounds on a single axle and 38,000 pounds on a tandem, and that tandem figure is higher than the 34,000 pounds most states allow.

One more rule sits on top of those numbers and gets misread constantly. G.S. 20-118(h) lets a vehicle exceed the maximum and inner axle-group weight limits by a tolerance of ten percent. It never authorizes exceeding the single-axle limit, the tandem-axle limit or the 80,000-pound gross maximum, and it does not apply to a vehicle exceeding a posted bridge limit or operating on an interstate highway. Plan an I-95 or I-40 run and the tolerance is not there. Plan the same load on state routes and it is, which is sometimes the difference between one over-legal dimension and none.

How the fee stacks

  • Per dimension, not per permit: $12.00 for each dimension over the lawful dimension, counting height, length, width and weight up to 132,000 pounds.
  • Above the single-trip ceiling: past 132,000 pounds gross the move adds $3.00 for each 1,000 pounds over 132,000 pounds.
  • When the bridge engineers get involved: $100.00 nonrefundable, due on submission, for an application that needs an engineering study for pavement or structures.
  • Ten calendar days: Publication ST-1 gives a single-trip permit ten calendar days. A return trip rides on the same permit only when it is requested at issuance and can be completed inside that window.

The consequence is that the cheapest thing a North Carolina carrier can do is delete a dimension from the count. Lowering a deck, trimming an overhang or shifting weight off a tandem does not shave a percentage off the fee. It removes a whole line.

Worked example 1: one dimension over

A tracked excavator loaded to 11 feet 6 inches wide, inside legal height, length and weight, is over on exactly one dimension. The permit is $12.00, once. That is the entire state charge for the move.

What costs money here is the width band it sits under. The escort line is over 12 feet, so at 11 feet 6 inches there is no escort, no pole car and no trooper. Six more inches of load and the move buys a front escort on two-lane two-way highways or a rear escort on multi-lane highways, and North Carolina will not accept just anyone in that seat: every escort vehicle operator has to hold an approved North Carolina escort certification, carried in the vehicle and available for inspection by law enforcement.

Width also sets the clock. Continuous travel, meaning 24 hours a day and 7 days a week, is authorized for a permitted load up to 10 feet wide with no other over-legal dimension and a permitted gross weight no greater than 112,000 pounds. At 11 feet 6 inches this load is sunrise to sunset instead.

Worked example 2: the dimension North Carolina does not charge for

Take a piece of process equipment 13 feet 9 inches tall and 9 feet 6 inches wide. In a 13 feet 6 inch state that is two over-legal dimensions. In North Carolina, 14 feet is legal height, so height drops out of the count and only width is over. Same load, same trailer, one charge instead of two.

The tandem does the same job on weight. A rig grossing 80,000 pounds with 37,500 pounds under a tandem is legal in North Carolina and overweight in a 34,000-pound tandem state, which means zero over-legal dimensions here and a permit somewhere else. Quoting a North Carolina leg off a neighboring state's spreadsheet therefore overcharges the customer, because the count changes before the fee does.

Height has a second wrinkle worth knowing. North Carolina does not undertake to raise or rebuild any structure to pass a vehicle over 12 feet 6 inches, and the owner or operator of a vehicle over that height is liable for damage to any structure it strikes. Legal height and guaranteed clearance are two different numbers.

Worked example 3: wide and heavy on the same trip

A transformer moving at 14 feet wide and 118,000 pounds gross is over on width and over on weight, so the single-trip permit is

$12.00

twice. It stays a single trip because the single-trip weight ceiling has not been reached.

How much gross weight the permit will actually authorize depends on the running gear. Publication ST-1 sets the ladder at 112,000 pounds on five axles, 120,000 pounds on six and 132,000 pounds on seven, each dropping to a lower figure when the extreme wheelbase is under 51 feet, with steer, single, tandem and tridem groups capped in their own right on top of that.

Escorts arrive with the width: past 12 feet this move needs one. So does the curfew. A permitted load over 12 feet wide may not travel within a 10 mile radius of the city limits of Charlotte, Raleigh, Durham or Chapel Hill between 7:00 a.m. and 9:00 a.m. or between 4:00 p.m. and 6:00 p.m., which means routing a Piedmont delivery around both peaks or parking for two hours.

Convoy travel is prohibited too. Two of your own trucks on the same permitted move must run at least two miles apart, which quietly changes the crew plan on a paired lift.

Worked example 4: past the ceiling, into superload

Above 132,000 pounds gross, or at 17 feet wide or greater, North Carolina stops selling single trips and starts selling superloads. The bill has three lines: the

$100.00

nonrefundable application fee due on submission, the

$12.00

base fee for each over-legal dimension, and

$3.00

for each 1,000 pounds over 132,000 pounds.

The fee is still the small number. At 17 feet wide the escort requirement jumps from one vehicle to three, one of which must be a North Carolina State Highway Patrol unit, and a trooper on a route for a day does not price in tens of dollars. Timing is the other cost. Applications go in at least 10 business days ahead for internal and bridge engineering review, status calls are wasted before 16 business hours have passed, an approved application sits in a pending-issue file for 90 days, and the bridge engineering study behind it expires at 90 days, at which point the application is void. Continuous travel is never authorized for a superload, and the return trip is a separate application.

When the annual permit wins

North Carolina sells an annual permit at

$185.00

per vehicle for commodities other than house trailers or trailer frames, and

$200.00

per vehicle for house trailers or trailer frames. Both run one year from the date of issuance, and neither the Department nor the Board may require review or renewal more than once per calendar year.

The break-even is a count, not a trip total. Divide the annual fee by the per-dimension fee and a carrier that is over on three dimensions every trip gets there in a third of the moves a single-dimension hauler needs.

What the annual buys is an envelope: up to 12 feet wide, 14 feet high, 105 feet long and 132,000 pounds. Under 90,000 pounds the load runs on all North Carolina highways where posted road and bridge limits allow, provided the vehicle or combination has a minimum extreme wheelbase of 51 feet. Over 90,000 pounds the permit names specific routes, up to 10 of them, and the power unit has to carry a registered vehicle weight of 80,000 pounds before an overweight permit is issued at all. So the annual is a strong buy for a fleet repeating the same wide-but-not-heavy move, and a weak one for a fleet whose heavy loads wander, because past 90,000 pounds the routes get named and the flexibility that justified the annual is gone.

What to check before you quote North Carolina

Count the dimensions first, against North Carolina's limits and not the region's. Check whether the route touches an interstate or a posted bridge, because either one switches off the ten percent axle-group tolerance. Check width at 12 feet for the first escort and the four-city rush hour curfew, and at 16 feet for the three-escort State Highway Patrol requirement. Check gross against the superload line, and add the engineering study fee whenever pavement or structures are in question. Then check the calendar: North Carolina runs a full moratorium on overwidth, overheight and overlength permitted movement across Independence Day, Thanksgiving and Christmas, with the dated windows published each year by the permit office.

Faxed applications stopped being accepted on August 1, 2025, so a carrier without a Permit Information Management System account starts by requesting one rather than by pricing a load. See every other credential the state expects at North Carolina trucking permits.

FAQ

Why is a North Carolina oversize permit priced per dimension?

Because G.S. 20-119 charges the base fee for each dimension over the lawful dimension, counting height, length, width and weight, rather than one flat fee for the permit. A load that is only overwidth pays one base fee, and a load that is overwidth and overweight pays two. The current amount renders with its statute on the state permits page.

Yes. G.S. 20-116 caps height at 14 feet, six inches above the 13 feet 6 inches most eastern states publish, so a load that needs a height permit in Georgia or Kentucky can ride legal here. Separately, North Carolina does not undertake to raise or rebuild a structure for a vehicle over 12 feet 6 inches, and that vehicle's owner or operator is liable for damage to any structure it strikes.

When does a North Carolina move become a superload?

Above 132,000 pounds gross weight, or at 17 feet wide or greater. The superload permit is valid 10 days for one single trip, carries a nonrefundable application fee due on submission, needs at least 10 business days of lead time for internal and bridge engineering review, and gets no continuous travel authorization.

How many escorts does North Carolina require?

It depends on the dimension. Over 12 feet wide is one escort, over 16 feet wide is three including a State Highway Patrol unit, over 14 feet 5 inches high is a front pole car, over 110 feet long is a rear escort and over 150 feet is two, a rear overhang of 15 feet or more is a rear escort, and over 149,999 pounds is a front escort. Every operator must hold an approved North Carolina escort certification.

Related guides

North Carolina IFTA Filing Walkthrough (Quarterly)

How a North Carolina carrier licenses on Form GAS-1274, files GAS-1276 with NCDOR quarterly, and when the Intrastate credential replaces IFTA.

California Oversize Permit Cost: Worked Examples

Three worked California oversize moves: which Caltrans permit each needs, which fee lines apply, and where escort rules change the total.

Florida Oversize Permit Cost: Worked Examples

Three worked Florida oversize moves: dimension tiers for trip permits, per-mile overweight pricing, and when an annual permit wins.

Sources

Primary statutes and official agency pages this guide relies on. Laws and fees change, so confirm against the current source before you act.

  1. N.C. Gen. Stat. 20-119 (Special permits for vehicles of excessive size or weight; fees) · North Carolina General Assembly
  2. N.C. Gen. Stat. 20-118 (Weight of vehicles and load) · North Carolina General Assembly
  3. N.C. Gen. Stat. 20-116 (Size of vehicles and loads) · North Carolina General Assembly
  4. Publication ST-1, Single Trip Permits (Rev. 11/19) · North Carolina Department of Transportation, Oversize/Overweight Permit Unit
  5. Publication SL-6, Superload Permits (Rev. 1/20) · North Carolina Department of Transportation, Oversize/Overweight Permit Unit
  6. Publication AN-1, Annual Permits (Rev. 7/24) · North Carolina Department of Transportation, Oversize/Overweight Permit Unit
  7. Publication E-9, Escort Vehicles (Rev. 8/24) · North Carolina Department of Transportation, Oversize/Overweight Permit Unit
  8. Oversize/Overweight Trucking Permits · North Carolina Department of Transportation

Haul Handbook publishes educational information about trucking registration and compliance requirements. This is not legal, financial, or tax advice. Rules, fees, and deadlines change; confirm with the agency before you file or pay.