Federal Bridge Laws / Vehicle Weight Laws | Dump Trucks
Mar 29, 2017 · Example 4: This is a 7-axle Super Dump, with the truck having the same 250-inch wheelbase as in Example 3. With the Super Dump, when the trailing axle is deployed, the overall axle length is increased by an additional 12 feet, for 35 feet total, and the maximum allowed GVW is increased to 80,500 lbs by the Federal Bridge Formula (80,000 lbs is the max allowed on Interstate highways, …
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