Massachusetts State Regulations
Transportation Restrictions
Vehicles between 12′ and 14′ wide, over 80′ but not exceeding 114′ in length and over 13′ 11″ height may travel under permit only during daylight hours except that no such travel shall be allowed between the hours of 7:00 AM – 9:00 AM and 3:30 PM – 7:00 PM, Monday through Friday.
Vehicles over 14’ wide, 115’ long, or 14’ high may travel only from 9:30 AM to 3:30 PM Tuesday, Wednesday, and Thursday.
All over-dimensional and or vehicles traveling under permit on the portion of Route 93 between Route 95 in Canton and Exit 21 in Boston (south of the Dewey Square Tunnel) may travel only during Day light hours. Except no travel between 7:00 AM and 9:00 AM and between 3:00 PM and 7:00 PM. Vehicles up to 12’ wide and/or up to 80’ in length may also travel from 3:00 AM to 7:00 AM.
All over-dimensional and or vehicles traveling under permit on the portion of Route 95 between Canton and the intersection of Route 1 in Peabody may travel only during Day light hours. Except no travel between 7:00 AM and 9:00 AM and between 3:30 PM and 7:00 PM. Vehicles up to 12’ wide and/or up to 80’ in length may also travel from 3:00 AM to 7:00 AM.
Travel prohibited on the following holidays: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas.
Operating Time
24 Hours a Day
Weekend Travel
Travel allowed Saturday and Sunday until noon
Transportation Requirements
Superloads
Anything over Routine Issue dimensions requires special approval from the DOT.
Oversize Load Signs
“Oversize Load” signs required for all oversize transport.
Flags/Lights
12” red flags required on the corners and extremities for all oversize vehicles.
Blades
Can be hauled on the same load as long as the blade or bucket doesn’t exceed the load width
or create the overweight.
Legal Limits
| Component | Restriction |
|---|---|
| Single Axle | 24,000 lbs. |
| Tandem Group | 34,000 lbs. |
| Gross Weight | 80,000 lbs. |
| Width | 8’6″ |
| Height | 13’6″ |
| Length – Semi-Trailer | 53′ |
| Overhang | 3′ Front | 4′ Rear |
Routine Issues
| Component | Restriction |
|---|---|
| Gross Weight | 130,000 lbs. |
| Width | 14′ |
| Height | 13’8″ |
| Length | 115′ |
Escort Requirements
| Dimension | Requirement |
|---|---|
| Width 12’1″ – 13’6″ | 1 Rear |
| Width Over 12′ on Cape Cod | 2 State Patrol & 1 Civilian |
| Width Over 13’6″ | 2 (Front & Rear) |
| Height Over 13’8″ | 1 Front with High Pole |
| Height 13’11” – 14’11” | 2 (Front & Rear) |
| Height Over 14’11” | 2 Front + Police |
| Length 80′ up to 95′ | 1 Rear |
| Length 95′ up to 134′ | 2 (Front & Rear) |
| Length 134′ and Over | 2 (Front & Rear) + Police |