The gross weight of vehicles in regular operation (operating without a special permit) is governed by the provisions in Iowa Code Ann. §321.463. Iowa has multiple weight tables that pertain to primary, non-primary, and non-Interstate highways.50 Separate tables for primary highways, non-primary highways, and exceptions are provided in Iowa Code §321.463[5][a-e]. See Exhibit 25 for a summary of Iowa weight provisions under regular operations.Drmattymd wrote: ↑Thu Jan 18, 2018 10:50 pmJust curious, is there a legal way to do that?Jballak9197 wrote: ↑Thu Jan 18, 2018 2:50 am I personally drive a KW T800 with triple axles and pull a 50ft Wilson trailer with walking floors. Pulling 96k of feed for Cargill from Cedar Rapids to Eddyville.
Exhibit 25: Summary of Iowa Truck Weight Limits for Vehicles in Regular Operations
Single Axle 20,000 lbs.
Tandem Axle 35,000 lbs.
Tridem Axle Per State weight table
Gross Weight 80,000 lbs. on primary and non-primary highways
90,000 lbs. on non-Interstate highways for six-axle vehicles
96,000 lbs. on non-Interstate highways for seven-axle vehicles
Other Five-axle livestock transports with a spread-axle semitrailer: 86,000; Six-axle: 90,000; Seven-axle: 96,000*
* Commercial Motor Vehicles not operating on the Interstate (Iowa Code §321.463[5][c][1])
Exemptions and Special Operations
Commodity Exemptions
Feeder, Grain Cart, or Tank Wagon: The weight on any one axle of a fence-line feeder, grain cart, or tank wagon operated on State highways may not exceed 24,000 lbs. from February 1 through May 31 or 28,000 lbs. from June 1 through January 31. The maximum gross vehicle weight of these vehicles may not exceed 96,000 lbs. (Iowa Code Ann. §321.463[4][1]).