Mississippi Code Title 63. Motor Vehicles and Traffic Regulations § 63-5-31

Subject to the limitations imposed on wheel and axle loads by Section 63-5-27, and to the further limitations hereinafter specified, the total combined weight (vehicles plus load) on any group of axles shall not exceed the value given in the following table (Table II) corresponding to the distance in feet between the extreme axles of the group, measured longitudinally to the nearest foot, on those highways or parts of highways found by the Mississippi Transportation Commission to be suitable to carry such increased load limits from an engineering standpoint, and so designated as such by order of said commission entered on its minutes and published once each week for three successive weeks in a daily newspaper of general circulation in this state:

Moreover, in addition to the per axle weight limitations specified by Section 63-5-27, the maximum load carried on a combination of vehicles shall be subject to the following additional limitations: The maximum load carried on any group of two (2) axles shall not exceed twenty-seven thousand (27,000) pounds in instances where one or more of such axles is a driving axle (that is, an axle turned by the vehicle's engine power).

An axle group shall consist of any two (2) or more consecutive axles of any vehicle or combination of vehicles.