Dave Shearer, project designer for the Center, explains the plans for Diehl Road to intern Abby Minor. The mission of the Center, which was established in 1999, is to provide technical assistance to township road crews throughout the Commonwealth, whose responsibility it is to maintain the nearly 20,000 miles of unpaved roads in Pennsylvania.
"Local municipalities do not have the equipment or funds to adequately maintain their roads," says Abbey, former executive director of the state senate's transportation committee. "There is a great need for low-cost materials to repair erosion and raise road surfaces, and waste tires are ideal." The porous nature of tires allows water to drain freely, and the bales provide good insulation during freeze and thaw cycles. "They are structurally perfect building blocks."