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With respect to trucks operating on the NHS in Arizona, a provision in State law allows trucks to exceed some elements of Federal limits: Excess weight up to 1,000 lbs. over State limits, which are consistent with Federal limits, is penalized by a fine of 1 dollar.
It is important that each truck is weighed before departing on its route to avoid these repercussions. The federal vehicle weight limits are 80,000 pounds gross vehicle weight, 20,000 pounds on a single axle, and 34,000 pounds on a tandem axle group. States, however, often have different limits.
Specifically, the 1956 law established maximum load limits including a maximum width of 96 inches, a single-axle weight of 18,000 pounds, a tandem axle wight of 32,000 pounds, and a maximum gross vehicle weight (GVW) of 73,280 pounds.
The standard federal weight limits are: • Gross vehicle weight: 80,000 pounds • Single axle: 20,000 pounds • Tandem axle: 34,000 pounds. These federal guidelines apply to the Interstate Highway System, but states have the authority to set their own limits for state and local roads.
May 2, 2022. Having just added Federal regulations for District of Columbia (DC), North Dakota (ND), New Hampshire (NH), Rhode Island (RI), South Dakota (SD) and Vermont (VT), the TruckScience Axle Weight Calculator now has full coverage of truck size and weight regulations for the Interstate Highway System in all 50 US states!
A load is considered over legal weight if it exceeds the weight limit on any axle group, even if the gross weight is under 80,000 pounds. Any freight that exceeds an axle weight limit or the total gross limit requires a permit for every roadway along the route.
As a result of the engineering axioms for pavement and bridge wear, the engineering community in the U.S. has set truck weight limits through laws and regulations that affect both axle loads and total weight of the vehicle.
Appendix B: Summary of State Exceptions to Federal Truck Weight Limits. The table below is a summary of State exceptions to Federal truck weight limits. For additional details see 23 CFR Part 658, Appendix C.
Knowing the actual DOT truck weight limits by state can easily lead to six-figure savings for large-volume shippers of heavy freight. The actual limit on ocean container weight is the max gross cargo weight listed on the container door – usually 10,000 or more beyond 44,000 lbs.
Semi Truck weight is governed in the USA at the Federal Level at 80,000 lbs. State weight limits can vary, the lowest is on Kentucky Non-Designated Highways (36,000 lbs) and the highest in Missouri Commercial Zones (112,000 lbs). The average allowable maximum gross weight in 111 different jurisdictions in the USA and Canada is 82,503 lbs.