Idaho Administrative Code
Title IDAPA 39 - Transportation, Department of
Rule 39.03.06 - RULES GOVERNING SPECIAL PERMITS FOR EXTRA-LENGTH/EXCESS WEIGHT, UP TO 129,000 POUND VEHICLE COMBINATIONS
Section 39.03.06.500 - GENERAL WEIGHT REQUIREMENTS AND CONDITIONS
Current through August 31, 2023
01. Weights Allowed on Interstate. The Federal Highway Amendment Act of 1974 established allowable legal weight limits on Interstate System Highways at twenty thousand (20,000) pounds on single axles, thirty-four thousand (34,000) pounds on tandems, and total gross loads not exceeding eighty thousand (80,000) pounds. (3-31-22)
02. Weights Allowed on Non-Interstate Highways. Allowable legal weight limits on non-interstate highways are set at twenty thousand (20,000) pounds on single axles, thirty-seven thousand eight hundred (37,800) pounds on tandems, and total gross loads not exceeding eighty thousand (80,000) pounds. (3-31-22)
03. Permit Types to Exceed Eighty Thousand Pounds Gross Weight. Permits will be issued for vehicle combinations operating on Interstate and non-interstate highways with total gross loads exceeding eighty thousand (80,000) pounds but not to exceed twenty thousand (20,000) per single axle, thirty-four thousand (34,000) pounds per tandem, and not to exceed the weight limit for any group of two (2) or more consecutive axles established by Section 49-1001, Idaho Code. (3-31-22)
