New Mexico OS/OD Overview
Permit Required
Yes – any load exceeding legal size or weight must have a permit before moving. New Mexico oversize/overweight permits are issued through the New Mexico Department of Transportation (NMDOT) oversize permitting system.
Legal Limits (Without Permit)
- Width: 8'6"
- Height: 13'6"
- Length: 75' (combo); 53' trailer allowed
- Weight: 80,000 lbs GVW (standard axle limits apply)
Anything over a legal dimension or weight requires an oversize/overweight permit before the move. Superloads beyond routine permit limits require engineering review, route survey, and possible bridge analysis.
Travel Hours
- Standard: Over-dimensional loads generally travel during daylight hours; verify the permitted hours printed on the issued permit.
- Night travel: Generally not permitted for over-dimensional loads unless specifically authorized on the permit.
- Restrictions: Travel may be limited on holidays, during adverse weather, or through metro and work-zone areas as noted on the permit.
Escort Requirements (General Guidelines)
| Dimension | Escort Requirement |
|---|---|
| Width > 12'0" | Lead (front) pilot car required |
| Width > 14'0" | Chase (rear) pilot car added |
| Width > 16'0" | State Police escort commonly required |
Detailed Information
LEAD PILOT: NMDOT requires a lead pilot car for widths over 12'0".
CHASE PILOT: A chase (rear) escort is added for widths over 14'0".
POLICE ESCORT: A State Police escort is commonly required for widths of 16' and greater.
Additional Notes
- "Oversize Load" signs, red/orange flags, and amber warning lights are required on the load and escort vehicles per NMDOT permit conditions.
- Permit conditions issued by NMDOT govern the specific move and may impose requirements beyond these general thresholds.
Source: New Mexico Oversize Permitting. Informational only — always verify against the live permit office before any move; permit conditions control.
