03141cam a2200385Ia 4500 20260818085136.0 160404s2016 dcua obt 000 0 eng d 9781523108909 .b12292801 TE175 .F39 2016eb Fay, Laura Converting paved roads to unpaved / consultants: Laura Fay, Ashley Kroon, Ken Skorseth, Richard Reid, David Jones Washington, D.C. : Transportation Research Board, 2016 1 online resource (88 pages) : illustrations NCHRP synthesis ; 485 At head of title: National Cooperative Highway Research Program "TRB National Cooperative Highway Research Program (NCHRP) Synthesis 485: Converting Paved Roads to Unpaved explores how common and under what conditions paved roads are converted to unpaved. NCHRP Synthesis 485 found that the practice of converting paved roads to unpaved is relatively widespread; recent road conversion projects were identified in 27 states. These are primarily rural, low-volume roads that were paved when asphalt and construction prices were low. Those asphalt roads have now aged well beyond their design service life, are rapidly deteriorating, and are both difficult and expensive to maintain. Instead, many local road agencies are converting these deteriorated paved roads to unpaved as a more sustainable solution. According to the report, local road agencies have experienced positive outcomes by converting roads. Many local road agencies reported cost savings after converting, compared with the costs of continuing maintenance of the deteriorating paved road, or repaving. One key to successful conversion is early involvement of the public in the planning process. Other techniques that can be used to improve the overall results of a project include treating or stabilizing granular surfaces to control dust, limiting the rate of aggregate loss, and reducing motor grader/blade maintenance frequency. Stabilization procedures can also improve safety, increase public acceptance, and reduce life-cycle costs and environmental impacts after a conversion has taken place."--Publisher's description. Includes bibliographical references (pages 28-30) Roads Design and construction Gravel roads Design and construction Kroon, Ashley, consultant Skorseth, Ken, consultant Reid, Richard, consultant Jones, David, consultant National Research Council (U.S.). Transportation Research Board. National Cooperative Highway Research Program. American Association of State Highway and Transportation Officials. United States. Federal Highway Administration, sponsoring body. Synthesis of highway practice ; 485 Download: Knovel http://app.knovel.com/hotlink/toc/id:kpCPRUASH1/converting-paved-roads?kpromoter=marc .b12292801 mngc n 251209 0 190207 e h n 0 23286 23286