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Life-cycle assessment of Nebraska bridges.
  • Published Date:
  • Language:
Filetype[PDF-930.89 KB]

  • Publication/ Report Number:
    SPR-P1(12) M312
  • Resource Type:
  • Geographical Coverage:
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ; NTL-PLANNING AND POLICY-Management Systems ;
  • Format:
  • Abstract:
    Life-cycle cost analysis (LCCA) is a necessary component in bridge management systems (BMSs) for

    assessing investment decisions and identifying the most cost-effective improvement alternatives. The

    LCCA helps to identify the lowest cost alternative that accomplishes project objectives by providing

    critical information for the overall decision-making process.

    The main objective of this project is to perform LCCA for different maintenance strategies using the

    developed deterioration models and updated cost data for Nebraska bridges. Deterministic and

    probabilistic LCCA using RealCost software for deck overlay decisions, expansion joint replacement

    decisions, and deck widening versus deck replacement decisions are presented. For deck overlay

    decision, silica fume overlay, epoxy polymer overlay, and polyester overlay are compared against bare

    deck with respect to life cycle cost for variable structural life. In expansion joint replacement decisions,

    two alternatives are compared: relocating abutment expansion joints at the grade beam; and replacing

    abutment expansion joints at the same place. Deck widening is compared with deck replacement in five

    different bridges.

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