Overview
Maryland oversize and overweight permits are issued by the Maryland State Highway Administration, Hauling Permit Section. Single-trip permits are valid for five travel days, excluding Saturdays and Sundays.
Permit approval depends on the proposed route, vehicle configuration, dimensions, axle weights and traffic-control needs.
Permit Office
| Office | Maryland State Highway Administration, Hauling Permit Section |
| Address | 7491 Connelley Drive, Hanover, Maryland 21076 |
| Contact | (410) 582-5757 / (800) 846-6435 |
| Hours | 7:30 A.M. – 4:30 P.M. (ET); closed for lunch 12:00 p.m. – 1:00 p.m. |
Permit Basics
| Permit validity | Single-trip permits are valid for five (5) travel days. Saturday and Sunday are excluded from these five days. |
| Operating time | 7:30 A.M. – 4:30 P.M. (ET); closed for lunch 12:00 p.m. – 1:00 p.m. |
Dimensions & Weights
Routine permit limits
| Length | 120′ |
| Height | 16′ |
| Axle / group | Spacing | Weight |
|---|---|---|
| Single | — | 27,000 |
| Tandem | — | 52,000 |
| Tridum | — | 63,000 |
Escort Requirements
| Based on | Escorts required |
|---|---|
| Width | On all highways — width over 13′ except manufactured housing: 1 |
| Width | On all highways — width 14′ or more, including manufactured housing: 2 (front & rear) |
| Length | On all highways — length over 85′: 1 |
| Length | On all highways — length 140′ or more: 2 (front & rear) |
| Height | On all highways — height 14′6″ or more (unless route requires escort for lesser height): 1 with height pole |
- On all highways — weight over 60 tons (120,000 lbs) GVW: 1
- On all highways — when weather or road conditions justify: 1, or 2 (front & rear) if conditions warrant
- On all highways — traveling a road too narrow to allow other vehicles to pass safely in either direction: 2 (front & rear)
- On all highways — traveling against traffic that will have to be diverted or stopped: 2 (front & rear)
- Police escort required when width is 16′ or more, weight is over 65 tons (130,000 lbs) GVW, or as the Maryland State Highway Administration requires for traffic diversion/control
Notes
- For loads 120,000 to 150,000 lbs GVW on interstates only, maximum is 27,000 lbs per axle