Total cost-benefit analysis of alternative corrosion management strategies for a steel roadway bridge

Scott Walbridge*, Dilum Fernando, Bryan T. Adey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Abstract This paper describes a methodology for evaluating alternative corrosion management strategies for a steel roadway bridge based on a total cost-benefit analysis. In this analysis, the impacts of girder type and preservation intervention selection on the bridge owner, users, and public are considered. The methodology is demonstrated for a steel girder bridge in Wallis, Switzerland. Painted carbon steel and unpainted weathering steel girders are investigated. The investigated preservation interventions are the following: protection by painting, protection by metalizing, and replacement. Deterioration of the girders by corrosion is modeled probabilistically. Following the methodology demonstration, sensitivity studies are performed, wherein the corrosion environment, traffic volume, and detour length during interventions are varied. The effects of these variations on the various benefit types are then discussed and the conditions under which the various corrosion management strategies may be optimal are identified.

Original languageEnglish
Pages (from-to)318-327
Number of pages10
JournalJournal of Bridge Engineering
Volume18
Issue number4
Early online date20 Jan 2012
DOIs
Publication statusPublished - 1 Apr 2013

Keywords

  • Corrosion Management
  • Life cycle
  • Metalizing
  • Painting
  • Total cost
  • Weathering steel girders

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