Exploring the U.S. Interstate Highway Bridge Maintenance Expenditure Versus Condition Trade-Off Relationship Using Aggregate Data

In the United States, oversight agencies such as the U.S. Department of Transportation, the Federal Highway Administration, and the Government Accountability Office are responsible for the measuring and monitoring the overall accountability of state highway agencies. To help these oversight bodies to carry out this task, it is often useful to show the extent to which the infrastructure condition at a given year influences the repair expenditure in a subsequent year. Further, oversight agencies typically seek to establish a methodology to assess how well the individual states are doing compared to each other. In response to these two issues, this paper first establishes an empirical relationship between the average deck condition at a given year and the normalized expenditure in a subsequent year. This is illustrated using Interstate highway bridge decks as a case study. The unit of observation in this paper is the state level (each state contains a collection of bridge decks whose average annual expenditures and average condition rating are known). Thus, the analysis is aggregate in nature and does not consider site-specific variables. The paper recognizes that there exist jurisdiction-specific variables that affect Interstate bridge deck condition, and therefore attempts to remove some of this bias by normalizing the expenditure as a ratio of the inventory size and by considering state-specific values of the key deterioration variables. Secondly, the paper identifies the factors found significant in the condition–expenditure relationship, and uses these factors as a basis for assessing the performance of state highway agencies relative to others.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 153-159
  • Monograph Title: Eleventh International Bridge and Structures Management Conference
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01672050
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 14 2018 9:42AM