ForConstructionPros.com

Bridge laws are a fact of life for many of today’s dump truck operators.

Federal highways are governed by the federal bridge formula, which uses a mathematical formula to calculate legal axle weights and spacings. This is complicated by the fact that state requirements vary. “Some states have more restrictive laws (aligned with the Federal Bridge Formula). Others have more liberal laws that abide by the Federal Bridge Formula on the interstate highways, and allow greater payloads on fewer axles or less distance between the axles on roads other than interstate highways,” explains Scott Smith, Flow Boy.

Where you are located and which roads you use to haul loads will determine the most productive dump truck/trailer solution. If in doubt, it is always advisable to seek the advice of a local dealer who is familiar with the regional regulations.

When facing the Federal Bridge Formula, dump trailers offer a productive solution to straight trucks. “By giving a greater distance between the axles or groups of axles, the unit (truck and trailer) is allowed to carry a greater legal payload, per the bridge formula,” says Smith.

Maximize Assets

Youngren Excavating, Boone, IA, is an excavating contractor that builds small commercial sites and building pads and performs demolition work. Like any construction firm, Youngren Excavating strives to maximize utilization of its equipment fleet.

Starting out with an excavator, a dozer, a semi tractor and a lowboy, Dave Youngren chose a Circle R Side Dump trailer for his operation instead of a traditional dump truck. “Instead of buying a dump truck, I wanted to utilize the license and the truck I was using to pull the lowboy,” he explains.