NH-New Hampshire

State Police : (603) 223-8778

OD Permits : (603) 271-2691

Road Conditions :  Live Map

2017  Sunrise/ Sunset chart

Registration maximum weight (cab card) : 80000

Operating time : One-half hour before sunrise to one-half hour after sunset, Monday through Friday. No weekend or holiday travel for over dimensional loads. Overweight only are not restricted for travel time.

Travel through the city of Manchester is restricted during the hours of 7:00 a.m. – 9:00 a.m. and 3:00 p.m. – 6:00 p.m. Toll road requirements are the same as other highways. No travel on major holidays, including some holiday weekend restrictions.

Weights : Weight: Single – 25,000 Tandem – 50,000 Tri Axle– 70,000. Loads exceeding these dimensions are treated as super loads. A bridge review is required when: any single axle exceeds 27,500 pounds, any axle of a tandem exceeds 25,000 pounds, any axle of a tri axle exceeds 22,500 pounds, any axle of a quad exceeds 20,000 pounds, any 5-axle combination exceeds 100,000 pounds, any 6-axle combination exceeds 120,000 pounds, any 7-axle combination exceeds 130,000 pounds, any combination of 8 or more axles exceeds 149,999 pounds.

SEASONAL LOAD RESTRICTIONS: During spring thaw, weights may be limited to 20,000 gross axle weight or less.

Size : Width: 16' , Height: 16' , Length: 110'.Loads exceeding these dimensions are treated as super loads.

Escorts : Width: At 12' – 1 escort; over 15'1” – 1 State Police escort (need 48 hours notice). State may require a second escort for some routes. Height: Route survey may be required for over 13'6 high, escort not usually required for height. Overhang: Over 15' – 1 escort. On a 2-lane undivided highway, 2 escorts are required if overhang exceeds 15' and width is over 12'. Length: At 80' – 1 escort; over 100' – 1 State Police escort (need 48 hour notice) unless they exempt it.

Signs :  "Oversize Load" sign required on front of an oversize vehicle and on the rear of the vehicle or load, whichever provides the best rear display. Mount red flags (at least 12" square) on all extremities of the load when load extends over sides of trailer more than 4 inches. When rear overhang exceeds 4', 1 flag shall be displayed at the end of the overhang if less than 2' wide, and 2 flags if the overhang is over 2' wide. There are no special lighting requirements.

General : Permits valid for five travel days. Must have permit prior to entering the state.