Developing deterioration models for Nebraska bridges.

Details

• Creators:
  Hatami, Afshin ; Morcous, George
• Corporate Creators:
  University of Nebraska--Lincoln
• Corporate Contributors:
  Nebraska. Dept. of Roads. Bridge Division ; United States. Federal Highway Administration ; United States. Department of Transportation. Federal Transit Administration
• Subject/TRT Terms:
  • Structural deterioration and defects
  • Deterioration
  • Aging (Materials)
  • Wear
  • Bridge superstructures
  • Bridge decks
  • Concrete bridges
  • Wearing course (Pavements)
  • Surface course (Pavements)
  • Inspection
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• Publication/ Report Number:
  SPR-P1(11) M302
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Edition:
  Final report.
• Corporate Publisher:
  Nebraska Transportation Center
• Abstract:
  Nebraska Bridge Management System (NBMS) was developed in 1999 to assist in optimizing budget allocation for ; the maintenance, rehabilitation and replacement needs of highway bridges. This requires the prediction of bridge ; deterioration to calculate life-cycle costs. At the meantime, the approach adopted to predict the deterioration of ; bridge components is based on national average deterioration rates, which are one drop in the deck condition rating ; every eight years and one drop in the superstructure and substructure condition rating every ten years. This approach ; does not account for the impact of traffic volume, structure and material type, and environment impacts, in addition ; to being not specific to Nebraska bridges. ; The objective of this project is to develop deterioration models for Nebraska bridges that are based on the condition ; ratings of bridge components (i.e. deck, superstructure, and substructure) obtained from bridge inspections since ; 1998 up to 2010. The impact of governing deterioration factors, such as structure type, deck type, wearing surface, ; deck protection, ADT, ADTT, and highway district, is considered in developing these models. ; Recently, NDOR decided to adopt “Pontis”, the BMS supported by the AASHTO, to avoid the frequent updates of ; NBMS, which is costly and time-consuming. Pontis requires the use of a specific type of deterioration models (i.e. ; transition probability matrices), which are not available for Nebraska bridges. Therefore, another objective of this ; project is to develop Pontis deterioration models using the inventory and condition data readily available in the ; NBMS database. Procedures for updating the developed model will be also presented.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24746/dot_24746_DS1.pdf
• File Type:
  [PDF - 1.87 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:607f76de0be7c1d9544f329a59430cca9ed38d3d30c74825fcf9ab28d5db01c6