Bridge Deck Thermography Verification and Policy

Details

• Creators:
  Seston, Brady ; Tieso, Anthony
• Corporate Creators:
  AECOM Technical Services, Inc
• Corporate Contributors:
  Wisconsin Highway Research Program ; Wisconsin. Dept. of Transportation. Library and Research Unit ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Aerial Photogrammetry Bridge Decks Bridge Inspection Bridge Performance Collection Parameters Data Collection Digital Cameras Drones Fixed Wing Aerial Infrared Analysis Infrared Imagery Infrared Thermography (IRT) Inspection IRT Specifications Non-Destructive Evaluation (NDE) Nondestructive Tests Rehabilitation Specifications Structural Health Monitoring Surveys Thermal Imagery Vehicle Mounted Wearing Surface

  More +
• Publication/ Report Number:
  0092-23-04
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Wisconsin
• Edition:
  Final Report: September 2022 – September 2024
• Corporate Publisher:
  Wisconsin. Dept. of Transportation. Library and Research Unit
• Abstract:
  As a part of the Wisconsin Department of Transportation's (WisDOT) overall bridge asset management program, different non-destructive evaluation techniques have been utilized on bridge decks to determine bridge condition. Since the early 1980s, WisDOT has used Infrared Thermography (IRT) to assess defect quantities and locations on bridge decks. These results were used to aid bridge monitoring, routine bridge inspections and help determine rehabilitation strategies. WisDOT recently coordinated a statewide infrared program organized by WisDOT's Bureau of Structures (BOS) for all WisDOT responsible bridges. However, interpreting the procedures between different inspection methods, such as vehicle and fixed-wing aerial IRT inspection, is difficult. The accuracy of infrared thermography inspection can vary based on different infrared equipment, environmental parameters, and data collection procedures. This research project aims to develop infrared-based inspection and analysis protocols to assist with WisDOT’s bridge asset management program. Determining what IRT collection method is best suited depends on the end use of the data and the level of IRT survey that is required. IRT data can be collected with handheld, drone, fixed-wing aerial, or vehicle-mounted cameras. The optimal time of day and weather conditions for collecting the IRT data depends on the bridge's wearing surface. Routine IRT bridge inspections at set intervals are important for monitoring the bridge lifecycle and providing additional information for rehabilitation decisions. IRT defects compared to rehabilitation results can vary depending on the wearing surface and the number of years the IRT data was collected before the rehabilitation project.
• Format:
  PDF
• Funding:
  0092-23-04
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:da6ce70726352cae51eab83480fbf4bbc2fb6c76bad8a47ae0ddf94e03f6aec9119e0749a99a8f0022898d270c3261bbf20f8a5ee5d6652054e59eed4728ecc9
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89229/dot_89229_DS1.pdf
• File Type:
  [PDF - 33.96 MB ]