
Farmers could see lower transportation costs and improved efficiency under legislation moving through Congress that would allow heavier semi-trucks to operate on interstate highways.
An amendment introduced by South Dakota Congressman Dusty Johnson has been added to the BUILD America 250 Act. The measure would establish a voluntary pilot program allowing states to permit six-axle trucks weighing up to 91,000 pounds on federal interstate highways.

Supporters say the proposal could help reduce transportation expenses for agricultural producers facing tight profit margins, high fuel prices and ongoing logistical challenges. Agricultural organizations, including the Soy Transportation Coalition, have endorsed the effort, arguing that increased trucking efficiency would benefit farmers and grain handlers.
The coalition said the timing is especially important as producers continue to deal with elevated diesel costs and pressure on farm profitability. By allowing heavier loads, fewer trips would be needed to move the same amount of grain, potentially reducing fuel consumption and easing congestion on transportation networks.
According to coalition estimates, a grain elevator using the heavier six-axle trucks could eliminate more than 800 truck trips each year while reducing annual diesel use by approximately 8,000 gallons. The organization also estimates that farmers in states adopting the higher weight limits could save an average of $756 annually in fuel costs.
The proposed program would be voluntary, allowing individual states to decide whether to participate. Supporters contend the additional axle would help distribute weight more evenly, reducing stress on roadways while increasing freight capacity.
The amendment remains part of the broader BUILD America 250 Act as lawmakers continue consideration of the legislation in Congress.




