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New Mexico Oversize Permits and Regulations

New Mexico Oversize Permits and Regulations

NMDOT's NM-OPS permits, the 86,400 lb legal gross, escort vehicle certification, wind limits and city curfews

Quick answer

Where do you buy a New Mexico oversize permit?

Buy it online in NM-OPS from the NMDOT Permit Office before the truck enters New Mexico; ports of entry sell only trip-tax and fuel permits. A single trip costs $25, plus $0.025 per 2,000 lb over 86,400 lb for each mile in the state, and covers one one-way move within 5 days. NMDOT has issued these permits since June 18, 2021.

Updated October 2026 by the HTS Logistics broker team (FMCSA MC# 1178470).

Checked October 2026; the issued permit controls

New Mexico's legal weights run above the federal ones: 21,600 lb on a single axle, 34,320 lb on a 4 ft tandem and 86,400 lb gross with 56 ft or more between the first and last axles (NMSA 66-7-409, 66-7-410), and the NMDOT/DPS Truckers Guide applies 86,400 lb on federally designated routes. The permit fee counts weight from the same 86,400 lb, not from the 80,000 lb federal figure shown in our oversize permits by state tables.

HTS arranges heavy haul runs across New Mexico as a licensed broker (MC 1178470): we book the carrier, buy the NM-OPS permit before the truck reaches the line, and use escort vehicles already certified in New Mexico, because an uncertified escort must stop outside the state, cover its lights, signs and flags, and drive to the nearest port of entry for inspection (18.19.8.20 NMAC). NMDOT warns that third-party websites sell bogus OS/OW permits at inflated prices, and it does not refund them.

When New Mexico requires a permit and how to get one

The NMDOT Permit Office issues OS/OW special permits in NM-OPS, the New Mexico Operating Permit System. Permits go only to irreducible loads, and a load that would be legal in another position or on another trailer type counts as reducible (18.19.8.9, 18.19.8.32(D) NMAC). Only the owner or lessee-operator may apply, an insurance certificate showing $50,000/$100,000 bodily injury and $25,000 property damage must be on file first, and permits may be carried electronically (18.19.8.10–.13).

Loads of 170,000 lb or more, and self-propelled loads, go to the NMDOT Bridge Office for a route engineering investigation of roads, bridges and culverts before the permit issues; NMDOT may add the cost of its own analysis to the fee, and no official lead time is published (NMSA 66-7-413.2). The $250 multiple-trip permit covers loads up to 14 ft wide, 15 ft high, 120 ft long and 140,000 lb within 4 contiguous counties and 3 Interstates, or statewide for tractor-semitrailers (18.19.8.51).

Permit office

Issuing office
NMDOT Permit Office
Address
PO Box 1149, Santa Fe, NM 87504 (mailing)
Phone
(505) 476-2475
Hours
Monday–Friday, 8 AM–5 PM Mountain; emergency permits online after hours
Roads covered
Only the highways listed on the permit; local authorities permit their own roads (66-7-413(A))

Fees

New Mexico OS/OW permit fees (NMSA 66-7-413; 18.19.8 NMAC)
PermitFee
Single trip, oversize and/or overweight (one one-way move, 5 days) $25
Over 86,400 lb gross Plus $0.025 for each 2,000 lb (or major fraction) over 86,400 lb, times the miles traveled in New Mexico
170,000 lb and up NMDOT may add the cost of its engineering analysis
Multiple-trip (annual) special permit $250
Specialized haul multiple-trip $400 for 4 counties and 3 Interstates, plus $100 per added county
Agricultural product multiple-trip, up to 5,000 lb over legal gross $250 per year
Liquid tank vehicle axle-weight permit (not on Interstates or over 86,400 lb) $35 single trip; $120 annual
Manufactured-home self-issue permit At least $25 each

Worked from the statute: 120,000 lb over 300 miles is 33,600 lb over, or 17 units, so 17 × $0.025 × 300 = $127.50, plus $25, for $152.50. NM-OPS takes credit cards only, through PayIt since May 18, 2026, with up to 15 permits per cart, and a permit voided by a violation is not refunded (18.19.8.28(C)). The weight-distance tax or trip tax is owed on top.

Escort and pilot car rules in New Mexico

New Mexico certifies the escort vehicle, not its driver: only vehicles inspected and certified by NMDOT or DPS may escort, for 1 year or until the insurance expires (18.19.8.86 NMAC), and the driver need only be 18 and licensed under the home jurisdiction's escort-driver rules (18.19.8.90). Width triggers come from the rule and from NMDOT's Escort Map, which lowers them on some routes; states that certify the driver instead are flagged in our pilot car requirements by state table.

New Mexico escort triggers (18.19.8 NMAC; NMDOT Escort Map)
LoadEscort requirement
14 ft wide or more, any highway Escort vehicle(s), with the number set on the permit; a single escort runs behind on multi-lane highways and ahead on two-lane highways (18.19.8.81, .85, .92(G))
13 ft 6 in wide or more, Escort Map Group A routes Escort required. Group A includes US 60 from I-25 east through Vaughn, Fort Sumner and Clovis to Texas, US 64 east of Farmington to Chama, and US 180/NM 12 from Silver City toward Datil
12 ft wide or more, Group B routes Escort on delivery or pickup only, per the map legend; Group B is mostly two-lane state roads such as NM 152 east of Silver City, NM 52 and NM 107
Non-Interstate routes in 27 Escort Map cities Escort required, at a width the map does not state; the cities include Albuquerque, Santa Fe, Las Cruces, Farmington, Gallup, Roswell, Hobbs and Carlsbad
Over 110 ft 1 in, up to 120 ft 1 in long 1 escort (18.19.8.82)
Over 120 ft 1 in long 2 escorts, or a number NMDOT sets by route (18.19.8.82)
Over 16 ft high An escort, or a person other than the driver, may be required to check each overhead clearance before the load passes (18.19.8.83)
Load projecting over 3 ft in front or 7 ft behind Escort at NMDOT's discretion (18.19.8.39(E))
20 ft wide or more Flaggers on every load, in addition to escort vehicles, and a police escort at NMDOT's discretion (18.19.8.84(A), .99(A))

Through a municipality, the applicant makes arrangements with the city, including any city permit, before NMDOT issues the permit; a move entirely within a city may use municipal police (18.19.8.84).

The escort vehicle (18.19.8.87–.88) has a wheelbase of at least 100 in, a rated capacity of 1.5 tons or less unless NMDOT approves, insurance of at least $50,000/$100,000 bodily injury and $25,000 property damage, and no tow. It carries two roof amber lights visible at 500 ft, an OVERSIZE LOAD sign at least 5 ft by 12 in with 10 in letters, two flags of at least 12 in square, a two-way radio, a 2.5 lb extinguisher and the NMDOT escort map, and it escorts one load at a time. We found no height-pole rule in 18.19.8 NMAC.

Travel times, curfews and holidays

By default a permitted load in New Mexico moves only in daylight, from 30 minutes before sunrise to 30 minutes after sunset, on any day of the week except holidays (18.19.8.7(E), 18.19.8.24(A) NMAC). There is no weekend ban, and the city curfews apply on weekdays only.

  • Continuous movement: loads up to 10 ft wide, 14 ft 6 in high, 120 ft long and 140,000 lb can be authorized for 24-hour travel, with lighting visible at 500 ft and, when over-width or over-length, at least 1 amber light at the rear and 2 on the power unit (18.19.8.25).
  • Albuquerque and Rio Rancho: no weekday movement 7–9 AM and 4–7 PM on Interstate, US and state highways inside city limits (18.19.8.26). The rule states no size threshold, so the ban covers every special-permit move unless the permit says otherwise.
  • Santa Fe, Las Cruces and the corridors between: no weekday movement 7–9 AM and 4–6 PM inside the Santa Fe and Las Cruces city limits, on I-25 between Santa Fe and Los Lunas and within Los Lunas, on US 285 between Santa Fe and Espanola and within Espanola, and on I-10 MM 139–145 and I-25 MM 0–9 near Las Cruces.
  • Wind and weather: no oversize movement in wind of 25 mph or more as reported by the National Weather Service, the nearest airport, a New Mexico port of entry or a government weather station, or in snow, ice, fog, rain, dust or visibility under 1,000 ft; loads and escorts leave the roadway (18.19.8.7(K), .24(B), .94(A)).
  • Frost: there is no New Mexico thaw season. Posted limits apply, hauling on a road soft enough to rut or break up is unlawful 'unreasonable use' (NMSA 67-7-10), and NMDOT's 2012 Bridge Weight Limit Map notes that some mountain highways close seasonally.
New Mexico holiday no-movement days, 2026 (18.19.8.7(J) NMAC)
HolidayNo permitted movement, 12:01 AM–11:59 PM
New Year's Day Thu Jan 1
Memorial Day Mon May 25
Independence Day Sat Jul 4
Labor Day Mon Sep 7
Thanksgiving Day Thu Nov 26
Christmas Day Fri Dec 25
New Year's Day 2027 Fri Jan 1, 2027

The rule bans movement on the calendar day of each holiday, for daylight and continuous-movement permits alike, plus any other holiday NMDOT designates. NMDOT publishes no dated list; the Oct 12, 2026 office closure did not affect OS/OW travel.

What catches carriers in New Mexico

Route survey at 15 ft 6 in

At 15 ft 6 in high or more, the route survey goes on a DOT-approved form, rides in the vehicle and is valid 14 days. Over 18 ft, written certification from the utility companies is required, and only the utility may move or lift an overhead wire.

18.19.8.30, 18.19.8.36 NMAC

One permitted load per bridge

Two permitted loads may not be on a bridge at the same time, and a permitted load may not cross a bridge posted below its permitted weight unless the permit allows it.

18.19.8.22(B), 18.19.8.27 NMAC

Booms and pipe are refused

Overlength permits are denied for welded pipe over 80 ft and for bolted or pinned crane or tower booms over 40 ft, so a boom that long comes apart before the move; plan that with the crane shipping side of the job.

18.19.8.37(C) NMAC

Chains and blades count

Chains and binders count toward width unless they only secure the load and stick out 3 in or less per side, and blades must be lowered and angled, which decides how a dozer is loaded for bulldozer transport.

18.19.8.35 NMAC

Ports of entry, weight-distance tax and work zones

A heavy load in New Mexico needs three things besides the permit: a stop at each port of entry, proof of the weight-distance tax or trip tax, and a route that clears NMDOT's current work-zone width limits.

NMDOT's 12 ports

NMDOT runs 12 ports. Four are open 24/7: Anthony (I-10 westbound, MM 159), Gallup (I-40 eastbound, MM 12), Lordsburg (I-10 eastbound, MM 23) and San Jon (I-40 westbound, MM 357); Carlsbad, Clayton, Hobbs, Oro Grande, Nara Visa, Raton, Santa Teresa and Texico keep set hours. Ports sell only trip-tax and fuel-tax permits, by credit card, and every commercial motor carrier vehicle stops at every port (NMSA 65-5-1).

Weight-distance tax and trip tax

Vehicles over 26,000 lb declared gross weight need an annual electronic weight-distance tax permit through TAP and file quarterly returns; rates rose 35% on July 1, 2026, to a top of 59.10 mills ($0.0591) per mile at 78,001 lb and over, with two-thirds for vehicles used for one-way hauls (NMSA 7-15A-6). Out-of-state trucks without New Mexico registration or a WDT permit pay the trip tax instead: 7 cents a mile at 12,001–26,000 lb, 12 cents to 54,000 lb, 15 cents to 72,000 lb and 16 cents above that (7-15-3.1). Neither tax law lists an exemption for permitted loads.

Work-zone width limits

NMDOT's Construction List (Oct 15, 2026) sets limits such as 16 ft 6 in on I-25 MM 227–229.2 in Albuquerque (Montgomery to Montano) through April 2027, 18 ft on I-40 MM 41.9–44.8 near Coolidge, and 12 ft on I-10 MM 85–110 from Deming to Akela starting Oct 26, 2026. Downtown Clovis (US 60 MM 387–389) is closed to loads: they use the NM 270 truck route on Norris St and Brady Ave, and only pickups and deliveries are allowed.

Mexico border loads

Permits up to 96,000 lb gross, without proving the load irreducible, are available within 6 miles of the Santa Teresa port (plus a defined 12-mile quadrant) and within 12 miles of other Mexico border ports (NMSA 66-7-413(N)). Vehicles operating only within 10 miles of the border in connection with a crossing are exempt from the weight-distance and trip taxes.

Roads NMDOT does not own

An NMDOT permit covers only the highways it lists. Local highway authorities issue permits for their own roads (66-7-413(A)), and NMDOT's Bridge Map states that it is not responsible for roads or bridges owned by other governments, including federal agencies, whose permission the operator must get.

Crossing into a neighboring state

  • Texas, on I-10 at Anthony: TxDOT's El Paso district bars loads over 12 ft wide or 95 ft long inside or on Loop 375 7–9 AM and 4–6 PM on weekdays, and TxDMV prices a permit at $60 plus a weight-band maintenance fee instead of New Mexico's ton-mile charge. Our Texas oversize permit fees and rules have the bands.
  • Arizona, on I-10 at Lordsburg or I-40 at Gallup: ADOT's continuous-travel envelope uses the same 10 ft wide and 14 ft 6 in high but allows up to 250,000 lb, and Arizona escort operators must be certified to CVSA standards or an equivalent, a step New Mexico's driver rule never asks for, as the Arizona oversize permit rules explain.
  • Colorado, on I-25 at Raton: CDOT requires pilot escort drivers to hold a certification it accepts (Arizona, Florida, Minnesota, Oklahoma, Utah, Washington or SC&RA) and $1,000,000 in liability coverage, and Pueblo and Colorado Springs curfews start 7 AM on weekdays. The Colorado oversize permit rules cover the map colors that set escorts.

New Mexico oversize permit questions

How is the New Mexico ton-mile permit fee calculated?

A single-trip permit costs $25 for oversize, overweight or both (NMSA 66-7-413(D)). Over 86,400 lb gross, add $0.025 for each 2,000 lb over 86,400 lb, multiplied by the miles driven in New Mexico: 120,000 lb over 300 miles adds $127.50, for $152.50 in total. Over 170,000 lb, NMDOT may add its engineering analysis cost. The annual multiple-trip permit is $250.

Which New Mexico loads need an escort vehicle?

An escort is required at 14 ft wide on any highway, from 13 ft 6 in on Escort Map Group A routes and from 12 ft on Group B routes for pickups and deliveries. Length brings 1 escort over 110 ft 1 in and 2 over 120 ft 1 in. Every escort vehicle must be inspected and certified by NMDOT or DPS before entering New Mexico, and loads 20 ft wide or more also need flaggers.

Is NM-OPS the only place to buy a New Mexico permit?

For OS/OW permits, yes. NMDOT sells them online in NM-OPS, the New Mexico Operating Permit System at truckpermits.dot.nm.gov, by credit card through PayIt, and ports of entry sell only trip-tax and fuel permits. Phone support is (505) 476-2475, weekdays 8 AM to 5 PM Mountain. NMDOT warns that third-party sites sell bogus permits at inflated prices and will not refund them.

Does New Mexico allow 24-hour oversize movement?

Only within the continuous-movement envelope: up to 10 ft wide, 14 ft 6 in high, 120 ft long and 140,000 lb, when the permit authorizes 24-hour travel and the load carries amber lights visible at 500 ft. Larger loads move from 30 minutes before sunrise to 30 minutes after sunset. Continuous movement never applies on holidays or in inclement weather, including wind of 25 mph or more.

Is New Mexico's legal gross weight really 86,400 lb?

Yes, with enough axle spread. New Mexico's statute allows 21,600 lb on a single axle, 34,320 lb on a 4 ft tandem and up to 86,400 lb gross with 56 ft or more between the first and last axles (NMSA 66-7-409, 66-7-410), and the NMDOT/DPS Truckers Guide applies those weights on federally designated routes. A typical 5-axle tractor-semitrailer reaches about 80,460 lb with 49 ft 6 in of spread.

Does wind stop oversize loads in New Mexico?

Yes. 18.19.8.7(K) NMAC counts wind of 25 mph or more as inclement weather for oversize loads, measured by the National Weather Service, the nearest airport, a New Mexico port of entry or a government weather station. Permitted loads also stop in snow, ice, fog, rain, dust or visibility under 1,000 ft, and loads and escorts must leave the roadway until conditions clear.

Do permitted loads pay New Mexico's weight-distance tax?

Yes. The weight-distance tax applies to vehicles over 26,000 lb declared gross weight, with rates up 35% since July 1, 2026 and a top rate of 59.10 mills per mile at 78,001 lb and over. Out-of-state trucks without New Mexico registration or a WDT permit pay the trip tax, 16 cents a mile over 72,000 lb. Both are separate from the OS/OW permit fee.

Sources

Facts on this page were checked in October 2026 against the sources below. Rules and rates change; we confirm current requirements on every move.

  1. eCFR 23 CFR Part 658: Truck Size and Weight (federal baseline)
  2. 18.19.8 NMAC Size and Weight of Vehicles and Loads (eff. 2/12/2016, amended 6/1/2022), HTML
  3. 18.19.8 NMAC full text (PDF)
  4. NMSA 1978 Chapter 66 Motor Vehicles (66-7-401 to 66-7-416, 66-7-314, 66-3-847, 66-3-849), NMOneSource
  5. NMSA 1978 Chapter 7 Taxation (Trip Tax Act 7-15; Weight Distance Tax Act 7-15A), NMOneSource
  6. NMSA 1978 Chapter 65 Motor Carriers (65-5-1 to 65-5-3 ports of entry), NMOneSource
  7. NMSA 1978 Chapter 67 Highways (67-7-10 unlawful use of highways), NMOneSource
  8. NM-OPS login page and notices
  9. NM-OPS Contact Information notice
  10. NM-OPS Construction List (10/15/2026)
  11. NM-OPS Emergency Permit Waivers notice
  12. NM-OPS tutorials (temporary trip tax and fuel permits)
  13. New Mexico Truckers Guide (NMDOT and NMDPS, 2019)
  14. NMDOT Escort Map (undated)
  15. NMDOT Bridge Management Section Loading Chart (undated)
  16. NMDOT Bridge Weight Limit Map (map date January 1, 2012)
  17. NMDOT Ports of Entry (locations, hours, permit contacts)
  18. NMDOT Ports of Entry (Planning, Research, Multimodal and Safety)
  19. NMDOT Permits page (NM-OPS PayIt change 05/18/2026)
  20. NMDOT NM-OPS PayIt customer guide (2026)
  21. NM MVD Weight Distance tax page
  22. FHWA Compilation of State Truck Size and Weight Laws, App. B (May 2015, secondary)

Crossing New Mexico on I-10, I-25 or I-40?

Wind over 25 mph, the Albuquerque 4–7 PM curfew and the weight-distance tax all land on the same trip. Give us the gross weight and the route, and we will work out the ton-mile fee, buy the NM-OPS permit and book escort vehicles certified in New Mexico.

  • FMCSA-licensed property broker, MC# 1178470
  • Permits, escorts and route surveys arranged for each move
  • Carriers checked for authority, insurance and safety record
  • Commercial shippers, dealers, contractors and auction buyers

Prefer to talk? Call (631) 683-8275.

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