In regard to pavement materials, some state highway agencies are naturally inclined to favor one material over others based on familiarity with construction of the pavement and the typical distress and failure characteristics of the material. Both asphalt and portland cement concrete pavements have their own unique advantages and disadvantages, and their use by state highway agencies is contingent upon numerous factors including technical performance and engineering economy. Traditionally, one of the main factors in pavement material selection has been the analysis of initial construction costs. However, with more transportation assets added to the state's inventory each year and financial resources becoming more restricted, state highway a...