Every year Harris County spends millions of dollars to rehabilitate existing pavements to improve rideability. These county roads include local roads in residential areas, minor collectors, and multi-lane arterials- both asphalt and concrete pavements. Rehabilitation options for asphalt pavements include mill and overlay, base repair, replace existing pavement, and replace existing asphalt pavement with concrete pavements. For existing concrete pavements, rehabilitation options include panel replacement and reconstruction.