WATFORD CITY, N.D. – The dump truck rumbled over miles of unpaved roads in the hills just east of the Montana border, past the cattle and grain bins and haystacks, before arriving at the dirt pit. Bill Gore slid his truck onto the scale, inched up in line, and made a curving gesture to the man in the front-end loader.
That was the signal to pile the dirt on high, and the loader did: Gore's five-axle truck pulled out of the pit north of Cartwright last week weighing 19,000 pounds more than its registered limit of 82,000 pounds.
"We try to run it as hard as we can," said Gore, who's been driving trucks here for four years.
Heavy trucks are the backbone of the Bakken oil fields, transporting the water, pipes, and sand needed to produce more than 1 million barrels of oil a day in western North Dakota. They move oil rigs from site to site, crude to pipelines and rail terminals, and dirt and construction materials to build the new roads, homes and businesses needed to serve the exploding population of new workers.
But the frenzied pace of the oil fields and spotty enforcement by authorities have encouraged the rise of overweight trucks. State authorities estimate that one-quarter of the Bakken's water trucks alone are overloaded.
Trucks hauling larger loads than what they were designed for pose safety concerns because extra weight lessens their braking power and increases the potential damage they could cause in a collision. On the crowded Bakken roads, truck crashes that led to severe injuries jumped twelvefold during a recent four-year period. And 100,000-pound trucks, which are common in oil field traffic, take 25 percent longer to stop than 80,000 pound trucks, according to the Truck Safety Coalition.
Heavy trucks also degrade bridges more quickly and crumble prairie roads built for light farm traffic, prompting the state to make record investments in rebuilding roads and bridges and constructing new bypasses.
In McKenzie County, the state's top oil-producer, the tiny Sheriff's Office has a file cabinet containing enormous violations. A driver from an Alexandria, Minn., company was pulled over this summer while hauling a crane that was 61,300 pounds overweight. A trucker from a Clear Lake, Minn., firm was caught driving 76,100 pounds overweight while carrying an excavator.