ODPermitFree calculator

ODPERMIT / STATE FIELD GUIDE NH

New HampshireOversize & overweight permits.

New Hampshire moves require the correct vehicle configuration, registered weight and route conditions. Check the permit fee and pilot-car plan before dispatch.

Source-linked state referenceContent reference View dated sources
01

Legal size & loaded measurements

Loaded dimensions

New Hampshire baselines are 8 feet 6 inches width and 13 feet 6 inches height; length and weight are configuration-, road-system- and bridge-specific.

Axles, weight & bridges

Use axle count, axle groups, spacing, tire ratings, road system, registration and bridge formula; GVW alone is not a New Hampshire weight decision.

Loaded width

New Hampshire's statutory width baseline is 102 inches including load, subject to the enumerated passenger-vehicle exception.

Loaded height

New Hampshire's general height baseline is 13 feet 6 inches; manufactured housing and modular buildings may reach 14 feet 6 inches only under their scoped rule and escort conditions.

02

Permits, routes & larger loads

Roads & authorities

Tra 304 permits authorize only state-maintained highways and bridges under NHDOT jurisdiction; obtain separate permission from town, city, turnpike and other route owners.

When a permit is needed

Excess size or weight requires the applicable New Hampshire annual, supplemental, emergency or single-trip permit unless a documented exception applies; ordinary single-trip permits are five business days.

Permits, routes & larger loads

A supermove begins over 15 feet width, 110 feet length, 13 feet 6 inches height or 149,999 pounds and requires engineering/route review; annual permits are not available for supermoves.

03

State permit fees

Single-trip agency fee example

$6 for this New Hampshire planning example: a nondivisible load measuring 8′7″ wide, 13′ high and 70′ overall, at 72,000 lb gross on a five-axle rig with a 48′ trailer. The example uses 100 in-state miles. Change the load details in the calculator for your move.

What the agency estimate includes

The calculator applies New Hampshire's maintained single-trip permit schedule to the loaded vehicle and the supplied fee inputs. It itemizes the supported state charges, including weight or distance charges where applicable. Annual permits, special products, local permissions and payment-method charges need their own applicable schedule.

NH / Permit worksheet

Price your New Hampshire movement.

Enter the complete loaded vehicle. Get estimated agency fees and escort requirements before sharing your contact details.

Crossing state lines? Use the route calculator
Single-trip · nondivisible loadOther permits & charges
Start with an example

Example loaded measurements are filled in. Adjust the equipment, mileage and registration to match your movement.

01

Loaded dimensions

Measure ground to highest point, widest point, and the full tractor–trailer–load length. These are not cargo-only dimensions.

Width
Height
Overall length
02

Equipment & registration

Trailer length
Trailer + load length
Axle weights, overhangs & movement details Optional
Front overhang
Enter 0 when there is no overhang.
Rear overhang
Enter 0 when there is no overhang.

Actual axle groups

Some weight fees depend on axle loads and spacing. Enter measured groups in travel order; do not divide gross weight evenly.

No ODPermit fee or markup. No contact details required.

Your estimate

The numbers behind your next move.

Your result will show the agency fee breakdown, potential pilot-car requirements, and the rules used to calculate them.

  1. 01 State agency fee subtotal
  2. 02 Escort & survey considerations
  3. 03 Sources & pricing assumptions

Single-state pricing uses the mileage you enter. For a proposed route and intermediate states, use the route calculator.

Agency fees only. Annual permits, specialized products and conditional services have separate terms.See the fee reference
About the example equipment

The samples use ODPermit’s editable 48 ft flatbed · 5 axles planning profile. Loaded dimensions, gross weight, 100 state miles and Texas registration are example inputs, not a capacity rating or a route approval. Replace them with your actual setup.

Great Dane Freedom trailer specifications48 ft platform; the illustrated 40 in drop deck and 20 in drop support a 60 in upper-deck planning height. Combined tare and tractor geometry are editable ODPermit assumptions.

04

Pilot cars, height poles & surveys

14′6″-wide load example

Example: 14′6″ wide × 13′ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. Depending on the road or permit conditions: At 14 ft wide or above, obtain the private-escort assignment on the permit. Length, height and overhang minimums shown here still apply; do not treat them as the entire width crew. Two state police escorts accompany the private team. This total includes the police vehicle otherwise triggered by length. Depending on the road or permit conditions: If any part of a highway must close, the police team increases to three vehicles total. The permit office can assign additional traffic-control resources for the route.

17′6″-high load example

Example: 9′ wide × 17′6″ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. A physical clearance survey is required above 13 ft 6 in high or above 110 ft long under Tra 304.07(g). Depending on the road or permit conditions: If any part of a highway must close, the police team increases to three vehicles total. The permit office can assign additional traffic-control resources for the route. Two-lane roads: 1 front pilot car. Multi-lane undivided roads: 1 front pilot car. Divided highways: 1 rear pilot car.

05

Travel hours & road restrictions

Travel hours

Oversize movement is ordinarily limited to one-half hour before sunrise through one-half hour after sunset, with weekends and listed holidays restricted; overweight-only normal-speed moves are a scoped exception.

Current route restrictions

Check NHDOT travel-status notices, seasonal/posted bridge and highway restrictions, construction, route-owner permissions and inclement weather before departure.

06

Signs, flags & safety equipment

Safety equipment

Use 18-inch flags, front/rear OVERSIZE LOAD signs, top-mounted amber lighting, no-convoy rules, escort radios/lights and all permit/weather controls; the unavailable current DMV CDL manual is not used to invent extra guidance.

07

What the driver needs

Carry the permit

Carry the issued permit in the vehicle; electronic carriage is allowed, but the designated route, dates and conditions remain binding.

Prepare the driver packet

The packet must match the issued vehicle/load, route, dates, dimensions, permit product, escort instructions and any engineering, bridge, survey, bond or road-owner documents.

08

Special equipment & permit programs

Special permit programs

Manufactured housing, modular buildings, emergency relief, self-propelled equipment, agricultural exceptions, annual permits and NETC regional permits have scoped conditions and must not be treated as blanket exemptions.

BEFORE THE TRUCK ROLLS

Turn the estimate
into a permitted move.

Confirm the loaded measurements, carrier details, travel dates and exact pickup and delivery. We can help coordinate permits, escorts and route surveys around those facts.

Get permit assistance

THE SOURCE RECORD

Official references.

Read the rule behind each requirement. These are dated references; current restrictions and the issued permit control your move.

  1. 01
    RSA 266:12 — Width

    RSA 266:12(I)

    Source record:
  2. 02
    RSA 266:10 — Height

    RSA 266:10(I)-(II)

    Source record:
  3. 03
    RSA 266:11 — Length

    RSA 266:11(I)-(IV)

    Source record:
  4. 04
    RSA 266:18 — Weight on Interstate and Defense Highway System

    RSA 266:18(I)-(II)(g)-(h)

    Source record:
  5. 05
  6. 06
  7. 07
    RSA 266:24 — Special Permits

    RSA 266:24(I)-(III)

    Source record:
  8. 08
  9. 09
  10. 10
    New Hampshire RSA 266:22 — registered-weight permit fee bands

    New Hampshire RSA 266:22 — registered-weight permit fee bands

    Source record:
  11. 11
    NHDOT permit ordering tutorial — combined OSOW fee example

    NHDOT permit ordering tutorial — combined OSOW fee example

    Source record:
  12. 12
    New Hampshire Tra 304.17 — escort vehicles

    New Hampshire Tra 304.17 — escort vehicles

    Source record:
  13. 13
    New Hampshire Tra 304.17 — escort vehicles

    New Hampshire Tra 304.17 — escort vehicles

    Source record:
  14. 14
  15. 15
    New Hampshire Oversize/Overweight Permit System

    New Hampshire Oversize/Overweight Permit System

    Source record:
  16. 16
  17. 17
  18. 18
  19. 19
How ODPermit uses official sources

ACROSS THE STATE LINE

Keep the whole trip in view.

All 48 state guides