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ICTD 2025

Infrastructure Systems

POSTER RECEPTION (View list of posters here)

A Review of Bridge Deck NDT Monitoring Practices Across the United States

Tuesday, June 10, 2025
4:45 PM – 6:00 PM MT
Abstract: Non-Destructive Testing (NDT) methods have become essential tools for assessing the condition of concrete bridge decks, enabling transportation agencies to detect subsurface damages such as delaminations, debonding, and corrosion without invasive procedures. However, the application and integration of these technologies vary significantly across different states in the U.S., with each state adopting distinct approaches based on budget, infrastructure priorities, and technological capabilities. This study presents a case study review of NDT monitoring practices in bridge deck assessments in selective states, highlighting state-by-state differences in the use and experience of NDT techniques such as Ground-Penetrating Radar (GPR), Infrared Thermography (IRT), Impact Echo (IE), and Automated Sounding. Drawing from survey data collected from various state departments of transportation, this review investigates the NDT technologies employed, their frequency of use, and the methodologies adopted for data collection and interpretation. It also examines how different states have integrated NDT results into their bridge management systems to guide maintenance and rehabilitation decisions. Specific case studies from states illustrate successful NDT programs, emphasizing their contribution to more accurate condition assessments, optimized repair schedules, and cost savings in long-term bridge deck management. This study can offer transportation agencies valuable insights into the diverse applications of NDT across the U.S. and underscores the need for standardization and best practices to enhance the effectiveness of these technologies in nationwide bridge management programs.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Learn the state of practice in the NDT program
  • Learn challenges in implementing NDT methods
  • Gaining practical insights on the diverse applications of NDT across the US