Programs in the rehabilitation category generally serve to extend the life of the infrastructure by repairing those deteriorated sections. The service life is extended by repairing and rehabilitating the existing infrastructure, and the costly replacement of that infrastructure is postponed.
Pavements beyond their service life showing signs of extensive roadway failure or those requiring the complete replacement of the asphalt pavement fall into the reconstructive project category. This is the most costly and disruptive form of roadway maintenance. These projects may also include the replacement of the road base and replacement of damaged sections of curb, gutter and sidewalk.