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Only single trip permits are issued for the movement of an overweight vehicle on Interstate Highways.
A permit is available to allow a motor vehicle to exceed 80,000 pounds when traveling on the Interstate Highways. The permit does not allow a motor vehicle to exceed its legal axle weight, legal tire weight, or the weight allowed by the Bridge Weight Formula. Neither does it allow a motor vehicle to exceed its commercial motor vehicle licensed weight.
If the motor vehicle exceeds the weight of 40,000 pounds on two axles, 60,000 pounds on three axles, 80,000 pounds on four axles, 85,000 pounds on five axles, 90,000 pounds on six axles, and 95,000 or more pounds on seven or more axles, an additional overweight fee is charged at a rate of two cents per ton-mile for the excess weight.
The Longer Combination Vehicle (LCV) permit allows specific vehicle combinations to operate on Interstate Highways and other specified State Highways at weights up to 129,000 pounds.
The LCV may not exceed a gross weight of 129,000 pounds, 20,000 pounds on a single axle, 34,000 pounds on a tandem axle or the weight as allowed by the Bridge Weight Formula on any axle group combinations. The weight on a steering axle may not exceed 600 pounds per inch width of tire, and the weight on all other axles may not exceed 500 pounds per inch width of tire. All axles must be equipped with four tires with the exception of the steering axle. A semitrailer or trailer may not weigh 3,000 pounds more than the trailer immediately ahead of it. Lift axles and belly axles are not considered load-carrying axles and will not count when determining the vehicle’s weight limits. Axles that are spaced eight feet or less apart must weigh within 500 pounds of each other.Calculate Oversize/Overweight Load Regulations and Prices Instantly with Oversize.io