Mississippi Oversize / Overweight Regulations

What is considered as "Oversized Load" in Mississippi?

Dimensions: Width: 8' 6" (8' non designated hwys) Height: 13' 6" Vehicle total Length: 99' Trailer Length: 53' Legal Overhang: Front: 3', Rear: 15'

What is considered as "Overweight Load" in Mississippi?

80,000 pounds overall (GVW)
Single axle limit is 20,000 pounds
Tandem axle limit is 34,000 pounds
Tridem axle limit is 42,000 pounds. 


Mississippi Oversize / Overweight Permits

Mississippi Permit Department Contact Information

888-737-0061

Fax: 601-359-5928

7:30 AM - 4:30 PM Central

http://mdot.ms.gov/portal/home.aspx

Mississippi Pilot Cars / Escorts

Rear overhang equal to 15' or greater will need a front and/or rear pilot car or escort.

Front overhang of 15'  or more will need a front and/or rear pilot car or escort.

Total length more than 99'  will need a front and/or rear pilot car or escort. 

Night movements of shipments that are 10' wide or wider need a minimum of 1 front escort and a flashing amber light attached to the rear of the load when traveling on a 2 lane non divided road. 

Night movements of shipments that are 10' wide or wider need a minimum of 1 rear escort and a flashing amber light attached to the rear of the load when traveling on a 2 lane divided road. 

Daylight movements of shipments that are 13' wide or wider need a minimum of 1 front escort and a flashing amber light attached to the rear of the load when traveling on a 2 lane non divided road. 

Daylight movements of shipments that are 13' wide or wider need a minimum of 1 rear escort and a flashing amber light attached to the rear of the load when traveling on a 2 lane non divided road. 

Depending on routing and other variables such as construction, load conditions, weather, etc.. Police escorts can be required for loads that exceed 20' in width.

Mississippi Axle Regulations

Maximum Weights Allowed

80,000 pounds overall (GVW) and no more than 12,000 pounds on the steer.
Single axle limit is 20,000 pounds
Tandem axle limit is 34,000 pounds
Tridem axle limit is 42,000 pounds. 

Maximum Permit Weights Allowed

180,000 pounds maximum gross weight (daylight movement permits only);
150,000 pounds maximum gross weight (24-hour movement permits).

Maximum Axle Weights and Minimum Axle Spacing

Five Axles                   80,000 to 95,000 lb.

Steering

Spacing

Tandem

Spacing

Tandem


14,000 lbs

12’

40,500 lbs

28’

40,500 lbs





Six Axles

(80,000 lbs to 120,000 lbs)


Steering

Spacing

Tandem

Spacing

Tri-axle


14,000 lbs

12’

42,000 lbs

28’

64,000 lbs





Seven Axles

(80,000 lbs to 150,000 lbs)


Steering

Spacing

Tandem

Spacing

Quad


14,000 lbs

12'

56,000 lbs

28'

80,000 lbs




Tri-axle


Tri-axle


14,000 lbs

12’

68,000 lbs

28’

68,000 lbs




Tandem


Tandem

Spacing

Tandem

14,000 lbs

12’

45,333 lbs

20’

45,333 lbs

20’

45,334 lbs








Eight Axles

(80,000 lbs to 170,000 lbs)


Steering

Spacing

Tri-axle

Spacing

Quad


14,000 lbs

12’

72,000 lbs

30’

84,000 lbs




Tandem


Tandem


Tri-axle

14,000 lbs

12’

43,000 lbs

18’

43,000 lbs

30’

70,000 lbs




Nine Axles

(80,000 lbs to 180,000 lbs)


Steering

Spacing

Tandem


Tri-axle


Tri-axle

14,000 lbs

12’

46,000 lbs

18’

60,000 lbs

30’

60,000 lbs



Tandem


Tandem


Quad

14,000 lbs

12’

46,000 lbs

18’

46,000 lbs

30’

74,000 lbs



Tri-axle


Tri-axle


Tandem

14,000 lbs

12’

60,000 lbs

20’

60,000 lbs

30’

46,000 lb

Superloads

190,000 pounds maximum gross weight.

Mississippi Trip and Fuel (IRP / IFTA) Permits

Trip Permit

Fee for Temporary Mississippi Trip Permit:         $25
Valid for:                                                                     72 hours.

Permits can be obtained through a permitting service, who will charge an additional processing fee or by calling 601.359.1717.

Fuel Permit

If you do not hold an IFTA license and are traveling in Mississippi:

           Purchase fuel within 24 hours of entering the state
           Keep your receipts in the vehicle.

Mississippi Overweight / Oversize Fines

Any driver of a vehicle who fails or refuses to stop and submit the vehicle and load to a weighing, or who fails or refuses, when directed by such an officer upon weighing of the vehicle, to stop the vehicle and otherwise comply with the provisions of this section, shall be guilty of a misdemeanor, punishable by a fine of not more than One Thousand Dollars ($ 1,000.00), or by confinement in the county jail for not more than thirty (30) days, or by both such fine and jail sentence and, if operating at a gross weight in excess of the legal limit, such additional penalty or assessment as provided by law.

Over Weight By:                                                                 Fine

1-999 lb.                                                                               $10.00 Minimum

1,000 - 1,999 lb.                                                                  $0.01 per lb. in excess of legal limit

2,000 – 2,999 lbs                                                                $0.02 per lb. in excess of legal limit

3,000 – 3,999 lbs                                                                $0.03 per lb. in excess of legal limit

4,000 – 3,999 lbs                                                                $0.04 per lb. in excess of legal limit

5,000 – 5,999 lbs                                                                $0.05 per lb. in excess of legal limit

6,000 – 6,999 lbs                                                                $0.06 per lb. in excess of legal limit

7,000 – 7,999 lbs                                                                $0.07 per lb. in excess of legal limit

8,000 – 8,999 lbs                                                                $0.08 per lb. in excess of legal limit

9,000 – 9,999 lbs                                                                $0.09 per lb. in excess of legal limit

10,000 – 10,999 lbs                                                            $0.10 per lb. in excess of legal limit

11,000 – 11,999 lbs                                                            $0.11 per lb. in excess of legal limit

Running Hours and Holiday Restrictions

Banners

"Oversized Load" Banner Regulations and Requirements:

Oversize vehicles require an "Oversize Load" Size" yellow banner with black letters

Flag Requirements

Warning flags to be displayed on all corners at a height of 6 ft.above the pavement on moves in excess of 10 ft. feet, not exceeding twelve12 ft. in width.

Two 5-in. flashing amber lights to be mounted 6 ft. above the pavement on the rear corners of loads exceeding 12 ft. in width.

Warning Lights

All Oversize loads require flashing amber lights at the rear of the load.

Flags, Lights and Banners

Night movements may be permitted for loads not exceeding 12 ft. wide, 150,000 lb.,  or 99 ft. long,  or 13 ft. 6 in. high.

Movement is not permitted on Sunday, after 12:00 noon on days preceding or on the following holidays; New Year’s Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving Day, and Christmas, unless permitted.

Local time restrictions may apply.

Mississippi Tire Regulations

Every solid rubber tire on a vehicle shall have rubber on its entire traction surface at least one (1) inch thick above the edge of the flange of the entire periphery.

No person shall operate or move on any highway any motor vehicle, trailer, or semitrailer having any metal tire in contact with the roadway.

It is permissible to use tire chains of reasonable proportions upon any vehicle when required for safety because of snow, ice, or other conditions tending to cause a vehicle to skid.

Front tire tread depth shall not be less than 4/32 inch in any two adjacent major tread grooves at three equally spaced intervals around the circumference of the tire.


Mississippi Annual Permits

Maximum Limits: 

  • Length: 99′
  • Width: 14′ 
  • Height: 13′ 6”

Cost: 

Annual Blanket OS Width permit –- $100 

Annual Blanket OS Length permit – $100 


Mississippi Road Conditions

April is Work Zone Awareness month

Safety comes first. 

MDOT crews that work on highways undergo extensive safety training, but even this sometimes isn't enough.

Drivers should:

Decrease speed
Obey signalization and work zone speed limits
Stay alert
When possible take alternate route

Significant fines for work zone violations from $250 and up


Mississippi Manufactured Houses and Mobile homes

Oversize Manufactured Housing Blanket Authority

May be issued for non-divisible manufactured housing more than:

14 ft. wide, not exceeding 16 ft. in wide

Not exceeding 14 ft. High

Overall combined length of towing vehicle and manufactured housing must not exceed 120 feet, and legal weight.

There is no charge for the blanket authority. 

Pre-numbered permit books must be purchased from the Department. Each book contains 50 permits and cost $500.00. ($10.00 per permit) 

The permittee will complete a permit form for each trip; the original will be placed in the vehicle. Completed books must be returned to the Department


Oversize / Overweight Regulations By State