Dirt Wurz USA construction crews work on the motocross course at the Carbon County Fairgrounds. The California based company spent five days in Price while focusing on improving the course. Two caterpillars widened the trails, added sections and created new obstacles on the 30-year-old course. The improvements come just in time for the world road race, slated April 5 and April 6 at the fairgrounds. According to local organizers, as many as 700 racers as well as spectators are expected to travel to Carbon County and attend the motocross event.