Overview
New Mexico oversize and overweight permits are issued by the New Mexico Motor Transportation Division Permit Office. Single-trip permits are valid for three consecutive days.
Permit approval depends on the proposed route, dimensions, axle weights and infrastructure conditions.
Permit Office
| Office | New Mexico Motor Transportation Division Permit Office |
| Address | 2500 Cerillos Road, Santa Fe, New Mexico 87505 |
| Contact | (505) 827-0376 |
| Hours | 7:00 A.M. – 5:00 P.M. (MT) |
Permit Basics
| Permit validity | Single-trip permits are valid for three (3) consecutive days. |
| Operating time | 7:00 A.M. – 5:00 P.M. (MT) |
Dimensions & Weights
Routine permit limits
| Length | No set maximum as long as trailer is 57′6″ or less (65′ for all other roads) |
| Width | No set maximum; evaluated per trip. 14′ wide needs escorts; 20′ wide requires route survey and State Police contact; 30′ wide needs highways verification. |
| Height | No set maximum; depends on routes. Over 15′6″ needs route survey; 18′ needs utility surveys. |
| Axle / group | Spacing | Weight |
|---|---|---|
| Single | — | 23,000 |
| Tandem | — | 46,000 |
| Tridum | — | 60,000 |
| Quad | — | 68,000 |
Escort Requirements
| Based on | Escorts required |
|---|---|
| Width | On all highways — width over 8′6″ if deemed a hazard: 1 |
| Width | On all highways — width over 14′: 1 |
| Width | On all highways — width over 20′ for 5 or more miles: police escort + flagman |
| Length | On all highways — length over 90′ up to 110′: 1 |
| Length | On all highways — length over 110′: 2 (front & rear) |
| Overhang | On all highways — overhang infringing on opposing lane of 2-lane or adjoining lane of multi-lane highways: 1 |
| Height | On all highways — height 16′ and over: extra person or escort to check overhead clearances (stated on permit if required) |
| Height | On all highways — height 18′ and over: clearance from utility companies and municipal/local authorities required; 1 escort |
- Escorts must be certified
Notes
- Gross Weight — 5 Axles: 105,000
- Gross Weight — 6 Axles: 119,000
- Gross Weight — 7 Axles: 127,000
- Gross Weight — 8 Axles: 150,000 with single axle in back and special approval