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Oversize Load Permit Requirements — New Hampshire
Legal size/weight limits, escort thresholds, travel restrictions, and permit office contact for New Hampshire.
These figures are a reference summary of publicly published state rules, not a substitute for a state-issued permit and not legal advice. Rules change — always confirm current limits and requirements directly with the state permit office before you plan or run a move. Last verified: 2026-06-28. Oversize Ops is NOT responsible and CANNOT be held liable for decisions made from this reference. Official source ↗
Legal Maximum Dimensions (no permit required)
- Width
- 8.5ft (102in)
- Height
- 13.5ft (162in)
- Length
- 53ft
- Gross Weight
- 80,000 lbs
- Single Axle
- 22,400 lbs
- Tandem Axle
- 36,000 lbs
Escort / Pilot Car Thresholds (see glossary for terms, certification requirements for the driver)
- Front escort required over
- 12ft wide
- Rear escort required over
- 12ft wide
- Both escorts required over
- 14ft wide
- Height escort required over
- 14ft tall
Front escort >12ft, both escorts >14ft. NHDOT certified escorts required.
Travel Restrictions
- Night travel
- Generally restricted
- Weekend travel
- Generally restricted
- Sunday travel
- Generally restricted
Mon-Fri ONLY (daylight, 30 min before sunrise to 30 min after sunset). State Police escort mandatory for width >14ft or length >=100ft. Manufactured housing up to 16ft wide allowed Tue/Wed/Thu only. Suspended in winds >25 mph.
Holiday blackouts: New Year's Day, MLK Jr. Day, Presidents' Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving + day after, Christmas.
Superload Thresholds
- Width over
- 15ft
- Length over
- 130ft
- Weight over
- 150,000 lbs
Estimated Permit Cost Current
$6 dimensions; weight tiered $5.50–$10.50+
Source: RSA 266:22 (effective 7/1/2023).
Permit fee only — does not include escort/pilot-car service costs (market-rate, arranged separately) or third-party permit-service fees. This is an estimate for planning purposes, not a quote.
Get a Permit
- Online portal
- https://nhlicenses2.nh.gov/cgi-bin/osow/forgot.cgi
- Phone
- 1-603-271-2311
Spring mud season restrictions apply March-May.
Planning a move through New Hampshire?
Plan a truck-legal route that checks bridges and construction, or find a vetted transporter or escort.
Try the Route Planner Find an Escort