Maryland oversize permit office
Maryland Department of Transportation State Highway Administration (MDOT SHA) - Hauling Permits. Call 1-800-846-6435, M-F 7:30 am - 4:30 pm (Closed 12:00 p.m.-1:00 p.m. daily) Eastern time.
From Maryland's own pages, checked 2026-10-24. Fees and rules change: the state's page is the last word.
- Apply online
- Maryland OneSource
- How to get one
- Register and apply online in Maryland One, or call or email the SHA Hauling Permits office.
- Single trip fee
- Thirty dollars for the first 40 tons or less of gross weight; five dollars for each additional ton or part of a ton in excess of 40 tons (COMAR 11.04.01.08 base fees for oversize and overweight).Source
- Legal without a permit
- Width 102 inches · Height 13 feet 6 inches · Length Semi-trailers over 48' but not over 53' are allowed on interstates and the Maryland truck route system · Weight 80,000 maximum gross (Single-20,000; Tandem-34,000; Tridum-42,500)Source
- Superloads
- Loads 120 ft long, 16 ft wide, 16 ft high, or over 150,000 lbs gross are superloads; they need an engineering review and police and private escorts.Source
When you can move
- Daylight
- By regulation, moves are allowed from half an hour after sunrise to half an hour before sunset; 14 ft wide or more may move only 9 a.m. to 3:30 p.m. on any highway. Your permit can set other dates and hours.Source
- At night
- MDOT SHA says loads up to 225,000 lb, 13 ft 11 in wide, 14 ft 6 in high and 139 ft long may move 24/7, and night moves run 8 p.m. to 6 a.m.; check the hours printed on your permit.
- Weekends
- By regulation, no moves on Saturday after noon or on Sunday.
- Holidays
- New Year's Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day. No permit moves at all on these days; the permit office is also closed on MLK Day, Columbus Day, Election Day and the day after Thanksgiving, but you may travel then. Next datesSource
- Rush-hour curfews
- 2 in Maryland, such as Capital Beltway (I-495/I-95) and Baltimore Beltway (I-695/MD 695): Loads over 45 tons, 100 ft or longer, or 12 ft or wider: 9 a.m.-3:30 p.m. only. All of them