Consequences of Utilizing Alternative Pavement Ratings for Prioritizing Pavement Rehabilitation of Illinois's Interstate Highway Network

The Illinois Department of Transportation (IDOT) currently uses Condition Rating Survey (visual rating) in managing its pavement network. Presently, decisions on when and which sections to rehabilitate are based heavily on CRS and the discretion and judgement of staff involved in prioritization. IDOT also collects pavement data, such as IRI, faulting and rutting for the highway network. However, they are not currently used consistently in prioritizing pavement rehabilitation. An effort was made to incorporate these additional factors in the decision-making process. Different pavement ratings address unique conditions of a pavement section; CRS addresses the physical condition of the pavement (such as cracking), whereas IRI addresses the smoothness of the pavement, thereby considering user comfort. Moreover, rutting incorporates safety and traffic addresses usage of the facility. CRS and IRI can be utilized as separate pavement indices on which pavement prioritization can be based. However, a composite index of CRS, IRI, traffic and rutting would not only change the priority of pavement sections but would add additional credibility to the selection of projects for rehabilitation. An evaluation of Illinois Interstate highway network was conducted utilizing CRS, IRI separately and a composite index of CRS, IRI and rutting. The composite index is part of a weighted benefit ranking procedure which measures the overall benefit of improving (rehabilitation and reconstruction) pavement condition. This paper evaluates the consequences of utilizing the composite index versus CRS and IRI in prioritizing pavement rehabilitation on Illinois' Interstate highway network. The paper also discusses the weighted benefit ranking procedure and its implementation in a Geographic Information System (GIS) based pavement management system (PMS). It is expected that the consideration of this broader based composite index would produce a better selection of projects that would be more optimal to the highway user and highway agency.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 537-544
  • Monograph Title: Applications of Advanced Technologies in Transportation: Proceedings of the Seventh International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01899266
  • Record Type: Publication
  • ISBN: 9780784406328
  • Files: TRIS, ASCE
  • Created Date: Nov 15 2023 9:19AM