South Carolina oversize permit office
South Carolina Department of Transportation (SCDOT) - Oversize/Overweight (OSOW) Permit Office. Call (803) 737-6769, 8:00 A.M. to 5:00 P.M., except Saturday, Sunday and holidays Eastern time.
From South Carolina's own pages, checked 2026-10-24. Fees and rules change: the state's page is the last word.
- How to get one
- Set up a company account and apply online in SCDOT's Safehaul system; permits are paid from an escrow account.
- Single trip fee
- Single Trip Permit $30.00; excessive width over 16' $35.00, over 18' $40.00, over 20' $45.00, over 22' $50.00Source
- Legal without a permit
- Width 102 inches · Height 13 feet 6 inches · Length 53 feet trailer or semitrailer in a truck tractor-semitrailer combination (Interstate and designated highways) · Weight 80,000 pounds on the Interstate System under the axle-spacing table (73,280 lbs. for 5 or more axles otherwise)Source
- Superloads
- Any non-divisible load over 130,000 pounds, or any single axle over 20,000 lbs., is a superload and needs extra routing review.Source
- How fast
- Annual multiple trip permits within the default limits can be auto issued 24 hours a day; superloads take 3 to 5 business days.Source
When you can move
- Daylight
- Loads up to 15 ft wide move sunrise to sunset, Monday through Sunday; loads over 15 ft wide move only 9 a.m.-3 p.m. on school days and 9 a.m.-4 p.m. on other days.Source
- At night
- Only loads up to 130,000 lbs gross with all other dimensions legal may get continuous (24-hour) travel on request; frame-building night moves are at SCDOT's discretion.
- Weekends
- Weekends are allowed, except no Saturday or Sunday moves east of I-95 in the Myrtle Beach area (US-17, US-501, SC-22, SC-31 and others) from Memorial Day through Labor Day.
- Holidays
- New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day. No travel on the day of the holiday; the Permit Director can also block travel from noon the day before to noon the day after, depending on route and load size. Next datesSource
- Rush-hour curfews
- 1 in South Carolina, such as Near large urban areas (loads over 12 ft up to 15 ft wide): 7-9 a.m. all days; 3-6 p.m. on school days and 4:30-6 p.m. on non-school days. All of them