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Mississippi Oversize Permits & Information

Mississippi overweight transport permits and oversize permits

Mississippi Overweight Permits

Mississippi oversize permits are valid for 3 days. Driver must have a Mississippi DOT permit prior to entering the state.

Operating time

Travel is allowed one-half hour after sunrise to one-half hour before sunset, Monday through Saturday. No Sunday travel. Continuous movement is allowed for loads not exceeding 12′ wide, 13’6″ high, 99′ overall length, 150,000 pounds GVW, 4′ rear overhang, and with proper lighting for night travel. However, when the load is over 10′ wide, an escort is required for night travel.

Restrictions

No travel after 12:00 noon on days prior to major holidays and some holiday weekends. No travel is allowed for loads over 12′ wide in Jackson, Memphis and Gulf Coast areas from 7:00 a.m. – 8:30 a.m. and 4:30 p.m. – 5:30 p.m. Monday through Friday.

Legal dimensions

  • The vehicle must have the following characteristics:
  • Width: 8’6″
  • Height: 13’6″
  • Length: 53’0 trailer, 99′ overall length
  • Overhang: 2’11” front, 14’11” rear
  • Weight: 80,000 Gross Single – 20,000 Tandem – 34,000 Tridem – 42,000

Routine Mississippi Oversize Permit Limits

  • Width: 20′
  • Height: 15’6″ (over 15’7″ requires route survey)
  • Length: 120′
  • Height: 16’ (Over 16′ requires route survey, utility company letters, and special approval.)
  • Weight: Single – 20,000 Tandem – 48,000 Tridem – 57,000 (60,000 on Interstate)

Escorts

  • Width: Over 12’11″ – 1 escort pilot car; over 16′ – 2 escort pilot cars; over 10′ wide at night – 1 escort pilot car
  • Length: Over 95′ – 1 escort pilot car (2 on some routes); over 105′ – 2 escort pilot cars
  • Height: The DOT may require an escort witha high pole for some routes if conditions warrant. A route survey is required when exceeding 15’7″ in height.
  • Overhang: Over 15′ front or rear – 1 escort pilot car

Security measures

“Oversize Load” signs are required for all loads exceeding 12 feet wide. Flags are required on all corners of loads that measure 10′ – 12′ wide. Loads over 12′ wide require flashing amber lights mounted on the rear of the load and signs on the front of the load. Over length loads and loads that exceed 4′ overhang must be flagged.