Preventive maintenance built into the highway design and construction phases will decrease maintenance costs. Experts in soil conservation, agronomy, and drainage can assist in maintenance inspections and in recommending appropriate erosion control measures. Periodic inspections of drainage and erosion control measures should be conducted shortly after completion of construction so that deficiencies can be located and corrected before they develop into major problems. Deficiencies in design or in construction procedures should be discussed with the engineering staff to avoid similar deficiencies on future projects. Coordination of responsibilities for erosion control measures among design construction and maintenance sections is encouraged.