Last month, a 322-ton shipment snaked its way though Idaho and Montana. Hauled by truck longer than a 747, this so-called "megaload" was carrying equipment to be used at a Canadian oil refinery.

Because of its size, the shipment couldn't be transported via interstate. Instead, the truck traveled on a road which passes through environmentally sensitive lands and tribal areas.

Rocky Barker, energy and environment reporter for the Idaho Statesman, joins the show with more.