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Mississippi Overweight/Oversize Permits

MississippiPERMITS: Mississippi oversize permits are valid for three days. Must have a permit prior to entering the state.

 

OPERATING TIME: One-half hour after sunrise to one-half hour before sunset, Monday through Saturday, with no Sunday travel allowed. In addition, 24-hour movement (including Sunday) is now being allowed for loads not exceeding 12′ wide, 13’6″ high, 99′ overall length, 150,000 pounds GVW, 4′ rear overhang. However, when the load is over 10′ wide, an escort is required for night travel.

 

LEGAL DIMENSIONS

Width:8’6″
Weight:80,000 lbs – gross weight

  • Single – 20,000 lbs
  • Tandem – 34,000 lbs
  • Tridem – 42,000 lbs
Length:

 

  • 53’0 trailer
  • 99′ overall length
Overhang:

 

With up to 53′ trailer

  • 3′ front
  • 14’11” back
Height:13’6″

 

PERMIT LIMITS

Width:16′
Weight:

 

  • Single – 20,000 lbs
  • Tandem – 48,000 lbs
  • Tridem – 57,000 lbs (60,000 lbs on Interstate)
Length:120′
Height:

 

  • 15’6″ (over 15’7″ requires a route survey)
  • 16’ (Over 16′ requires a route survey, utility company letters, and a special approval.)

 

 

ESCORTS FOR WIDELOAD AND OVERSIZED SHIPPING

When Escorts are Needed:

On All Highways:

Width over 10′ wide at nightneeds 1 escort
Width over 16′needs 2 escorts
Width over 12’11”needs 1 escort
Length over 99′needs 1 escort (2 escorts on certain routes)
Length over 105′needs 2 escorts
Overhang over 15′ front or back will need 1 escort
Height over 15’7″ will need a route survey

DOT might require an escort vehicle with a high pole for certain routes if conditions apply.

Note: Rear escort for width may be replaced by 2-5″ flashing amber lights sufficient for 500 ft visibility mounted approximately 6 ft above the road surface on the rear corners of the load – control of lights must be inside towing vehicle with the device to alert the driver in the event of a malfunction.

 

SIGNS, FLAGS & LIGHTS

“Oversize Load” signs are required for all loads exceeding 12 feet wide. Flags are required on all corners of loads (mounted at a height of approximately six feet above the pavement) on loads exceeding 10 feet wide. Loads over 12′ in width require flashing amber lights mounted on the rear of the load and flags on the front corners or the load. Over-length loads and overhang in excess of 4 feet must be flagged.