Maryland

PERMITS:
Permits are valid for 5 travel days. Driver must have permit prior to entering the state.

TRAVEL TIME:
Travel is allowed one-half hour before sunrise to one-half hour after sunset, Monday through Friday and Saturday until Noon.

RESTRICTED TRAVEL:
Over 12′ wide; 100′ in length or over 90,000 pounds can only travel between 9:00 A.M. to 3:30 P.M. (and Saturday until Noon) when on the Capital Beltway I-495/I-95 and Baltimore Beltway I-695. If 14′ wide or more, travel is only allowed from 9:00 A.M. to 3:30 P.M. (and Saturday until Noon on any highway). No travel on major Holidays and Holiday weekends. No travel allowed on Sunday.

Toll Facilities:
Far right lane must be used for all oversized loads. Toll facilities must be contacted at least 1 hour prior to arrival. If lane is closed – Pull up – Wait – MDTA will open for you.

LEGAL DIMENSIONS:
Width: 8’6″ Interstate & designated highways, 8′ all other roads.
Height: 13’6″ (over 13’6″ not permitted on flat-bed).
Length: 53′ semi-trailer on Interstate and designated highways, 48′ trailer all other roads. Trailers over 48′ are not to exceed 41′ kingpin to center of rear tandem axles, and not more than 4′ set back from front of trailer to kingpin.
Overhang: 3′ front; 6′ rear
Weight: 80,000 Gross; Single – 20,000; Tandem – 34,000; Tridem – 42,500

ROUTINE PERMIT LIMITS:
Width: 16′
Height: 16′
Length: 140′
Weight: 120,000 (non-Interstate) to 150,000 (Interstate) Single – 27,000; Tandem – 52,000; Tridem – 63,000
Loads exceeding these dimensions are treated as super loads. Over 120,000 pounds gross on any non-Interstate routes is a superload.

ESCORTS:
Width: Over 13′ – 1 escort; 14′ or more – 2 escorts; at 16′ or more – 2 escorts and 1 Police escort.
Montgomery and Prince George Counties: loads over 12′ wide on 2-lane undivided – 2 escorts
Length: Over 85′ – 1 escort; 140′ or more – 2 escorts.
Height: 14’6″ or more – 1 escort with height pole (some routes may have other requirements), and a route survey must accompany application.
Weight: Over 120,000 pounds – 1 escort and 1 Police escort is required on entire route if any part of the route is on non-Interstate highways; over 130,000 pounds – 2 escorts and 1 Police escort (required even on Interstate-only routes).

MISCELLANEOUS:
Construction equipment can have blade or bucket attached up to 12′ wide. Detached blade and dozer cannot be hauled on same load if it is overweight. The blade has to be hauled separately.

SAFETY REQUIREMENTS:
“Oversize Load” or “Wide Load” signs are required if the vehicle and load exceeds 9′ in width. Flags and/or lights are needed for a rear overhang exceeding 4’. The flags are to be fastened at each corner and placed at the widest extremities. Instead of flags, red lights shall be displayed on the overhang and 1 on each side of the load.