heavy sugar beet and grain trucks precipitated a premature breakdown
of County Road #1, county engineers turned to Multi-Flow for a premium
drainage job. Water had been seeping through the road surface. Heavy
truck traffic caused a pumping action that washed the fine particles
out of the base resulting in voids and instability.
was trenched into the gravel shoulder along the southbound lane,
the lane used by loaded sugar beet trucks. The top of the pipe was
situated 8 inches below the surface. Outlets to the ditch were installed
every 350 feet.
years later the trucks were still rolling on the same surface.