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Mississippi DOT #: 601-359-1717

Mississippi Oversize Permits Duration

Mississippi Oversize Permits are effective for a duration of three days and must be obtained before entering the state.

Operating Time

Travel is permitted from half an hour after sunrise to half an hour before sunset, Monday through Saturday, with no Sunday travel allowed. Additionally, 24-hour movement, including Sundays, is now permitted for loads not exceeding 12 feet in width, 13 feet 6 inches in height, 99 feet overall length, 150,000 pounds gross vehicle weight (GVW), and 4 feet rear overhang. However, an escort is mandatory for night travel when the load exceeds 10 feet in width.

Call (832) 454-5883 For Permit Consultation

Legal Dimensions for Mississippi  Oversize Load Permits

Length:

• 53’0 trailer
• 99′ overall length

Overhang:

With up to 53′ trailer

• 3′ front
• 14′-11″ rear

Width:

8′-6″

Height:

13′-6″

Weight:

80,000 Gross

• Single – 20,000
• Tandem – 34,000
• Tridem – 42,000

Routine Permit Limits at Mississsippi

Length:

120′

Width:

16′

Height:

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

Weight:

• Single – 20,000
• Tandem – 48,000
• Tridem – 57,000 (63,000 on Interstate)
• Quad – 64,000 (72,000 on interstate)

Escort Requirements for Mississippi Oversize Permits

Length:

• Over 95′ – one escort (two on some routes)
• Over 105′ – two escorts

Overhang:

Over 15′ front or rear – one escort

Width:

• Over 13′ – one escort
• Over 16′ – two escorts
• Over 10′ wide at night – one escort

Height:

For certain routes, the DOT may mandate an escort with a high pole if conditions necessitate. Additionally, a route survey is obligatory when surpassing a height of 15 feet 7 inches.

Miscellaneous

The overweight dozer and blade must be transported together, or if the blade is detached, they must be carried on separate loads.

Signs, Flags & Lights for Mississippi Oversize Permits

Signs displaying “Oversize Load” are mandatory for all loads exceeding 12 feet in width. Flags must be affixed to all corners of loads surpassing 10 feet in width, mounted at a height of approximately six feet above the pavement. Loads exceeding 12 feet in width necessitate flashing amber lights on the rear and flags on the front corners of the load. Additionally, over-length loads and those with an overhang in excess of 4 feet must be flagged.

Permitting Superloads

• The specifications determining a “superload” vary from state to state (refer to the “Routine Permit Limits” section for details on the relevant states).
• Approval and issuance of a superload permit in certain states may take one to two weeks. Delays should be anticipated.
• The approval process for superload permits in states may involve requirements such as letters from the shipper, route surveys, district-by-district engineering approvals, etc., potentially causing delays in the approval process.
• Carefully measure your load. Even an additional inch or two in height can significantly impact routing and turnaround time for a superload.