Economic Implications of Selection of Long-Life versus Conventional Caltrans Rehabilitation Strategies for High-Volume Highways

This report presents the results of a two-part study that compared the lifecycle costs of two long-life pavement (LLP) rehabilitation options and several conventional rehabilitation strategies for existing asphalt and concrete pavements, considering both agency costs and road user cost associated with traffic delay caused by construction. The results of the analyses showed that for the current data and assumptions (pavement lives, construction productivity, hourly traffic patterns) used in the study together with better traffic delay analysis, the LLP options have greater total costs than conventional rehabilitation alternatives assuming 24-hour-per-day closures for LLP options and 8-hour nighttime closures for conventional alternatives. However, the sensitivity analyses showed that as traffic demand is reduced by implementation of Traffic Management Plans (TMP) and use of weekend closures, the traffic delay costs associated with LLP options are significantly reduced. If non-pavement costs are reduced for the LLP options, LLP options become competitive for projects with large numbers of lanes. The sensitivity analyses made clear the need to perform lifecycle cost analysis for each project using project-specific data for both agency costs and road user costs. Despite the findings of this study, LLP is still considered to be a feasible rehabilitation option. It is thus strongly recommended that LCCA be performed on a case-by-case basis when determining whether to use long-life or conventional strategies as significantly different results could be obtained when project specific data and actual overhead and administration costs are used.

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    University of California, Berkeley

    Institute of Transportation Studies, Pavement Research Center
    1353 South 46th Street
    Richmond, CA  United States  94804

    University of California, Davis

    Pavement Research Center, One Shields Avenue
    Davis, CA  United States  95616

    California Department of Transportation

    Division of Research and Innovation
    1227 O Street, MS-83
    Sacramento, CA  United States  94273-0001
  • Authors:
    • Jones, David
    • Lee, Charles
    • Harvey, John
  • Publication Date: 2005-6

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01152787
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Report/Paper Numbers: UCPRC-RR-2005-08
  • Files: BTRIS, TRIS, STATEDOT
  • Created Date: Mar 8 2010 5:12PM