Select a State:

Oversize Overweight OS/OW Superload
53' trailer length,
8'6" wide, and
13'6" high
80,000 lbs
Exceeding legal
weight and dimension
125' long,
16' wide, and
130,000 lbs
Single Trip =
Not Exceeding
16' wide - $30.00
16' wide = $35.00
18' wide - $40.00
20' wide - $45.00
22' wide - $50.00
Single Trip =
Not Exceeding
130,000 lbs -
$10.00 Admin Fee
Single Trip =
+ $10.00 OW Fee
Single Trip =
Application Fee -
$100.00 +
If Exceeding
130k lbs - $100.00
200k lbs - $200.00
300k lbs - $350.00
Superload Impact Fee
(all loads over 130k lbs)
$3.00 per 1,000 lbs
When Escorts are Needed; # of Escorts:
On 2 Lane Highway
Width over 12' up to 14' 1 front
On All Highways
Width over 14' to 16' 2 (front and rear)
Width over 16'
(requires the approval of county
engineer and then state oversize
permit department)
2 (front and rear)
+ 2 police escorts
Rear overhang of 15' on less than
48' trailer, 10' on 48' and 53' trailers
Rear escort and flags
(or amber flashing lights)
Permitee is responsible for vertical clearance. No specific escort needs given for height and length.

Overhang Requirements:

Maximum legal overhang allowed is 3' (three feet) in front and 4' (four feet) in rear. Overhang exceeding these dimensions will require a over length permit.

Police Escorts:

$50.00 per hour per officer (1 front and 1 rear is required), with a 2 hour minimum + $0.50 per mile per officer - round trip from their residence.

Permits Valid For:

Single Trip Permits are valid for seven (7) consecutive days.

Operating Time

Permitted loads are allowed travel from one-half hour after Sunrise to one-half hour before Sunset, Monday through Saturday.

Loads that are permitted for width between 12' wide and 15' wide are allowed travel one-half hour after Sunrise to one-half hour before Sunset, Monday through Saturday, except travel is prohibited in close proximity of large urban areas between 7:00 - 9:00 a.m. all days and 3:00 - 6:00 p.m. on school days and 4:30 - 6:00 p.m. on non-school days.

Loads that are permitted for width over 15' wide are allowed movement Monday through Saturday only between the hours of 9:00 a.m. and 3:00 p.m. during school days, and 9:00 a.m. to 4:00 p.m. on non-school days.

Weekend Travel

Permitted loads are restricted from travel on Sundays.  Permitted loads that are 16' wide or less may travel from Sunrise to Sunset on Saturdays.  Loads that are over 130,000 lbs. are restricted from travel on Saturdays.  Loads that are permitted for weight up to 130,000 lbs. are allowed continuous travel, but must be specially requested with permit application.

Divisible Loads

Permitted loads must be reduced to their least possible dimensions and weights.  A load must be situated on the trailer so that the least possible width and length are the dimensions permitted.


The hydraulic boom and bucket permanently attached to a vehicle used in the maintenance and construction of electric service lines shall not be considered as a load provided that they shall not extend more than 8' in length beyond the foremost part of the vehicle with legal weight and dimensions.

Forestry equipment or road machinery is exempt from the laws and promulgated rules and regulations governing size and weight except when it exceeds 12' wide and 90,000 lbs. gross weight.

Restricted Travel

Whenever possible, over-dimensional vehicles/loads should be routed over highways having 12' wide lanes.  Exceptions to this are in case of emergencies or where there is a good cause to show that such movement is in the public interest, or for the sake of safety.

Permitted loads or vehicles that are 14' wide or greater are to be moved over state highways in close proximity of large urban areas between the hours of 7:00 - 9:00 a.m. and 3:00 - 6:00 p.m. on school days, and from 4:30 - 6:00 p.m. on non-school days.

Permitted loads will not be allowed travel during inclement weather such as heavy rain or fog when visibility is restricted to less than 1,000' feet.  Movement shall be prohibited during periods of high winds or when highways are slippery or hazardous.

Movement is prohibited on Fridays and Saturdays from Memorial Day through Labor Day over US- 378, SC-327, US-76, SC-576, US-501, SC-22, SC-31 and SC-9 east of I-95 to and from Myrtle Beach are and on Route 17 from North Carolina line to points south of Myrtle Beach (Georgetown) and any other routes in the Myrtle Beach vicinity.

Holiday Restrictions

Permitted loads will be restricted from travel on the following Holidays:

  • New Years Day
  • Memorial Day
  • Fourth of July
  • Labor Day
  • Thanksgiving Day
  • Christmas Day

Note that Holiday Travel Restrictions will be in effect from 12:00 noon the day before each Holiday until 12:00 noon the day after each Holiday, except upon written approval from the Department of Transportation.

Spring Weight Restrictions

There are no Seasonal Weight Restrictions in the State of South Carolina.

Superload Requirements

Loads or vehicles that are 125' long x 16' wide and 130,000 lbs. or more are considered Super-loads.  When it comes to height, South Carolina will issue Super-load permits on a case by case basis depending upon the cargos destination, and the proposed route it will travel.  Any cargo that sits greater than 14' high while loaded onto trailer should be assessed to determine if it will require a Super-load permit.  This information can be obtained through the South Carolina Department of Transportation at (803)-737-6769.  Loads or vehicles weighing in excess of 130,000 lbs. will require that its Super-load application be sent to the Bridge Department for approval.  Additional information that should be included with Super-load application will be included, but not limited to: diagram/drawing showing axle spacing, axle weight, dimensions and weight of cargo and trailer, and any proposed primary and secondary Routes of travel.  Super-load applications should be allowed up to twelve (12) days for processing and approval.