Incorporating Non-Destructive Testing into Bridge Management Systems

Abstract: Effective bridge management is crucial for ensuring the long-term durability and safety of transportation infrastructure. As bridge decks are prone to deterioration due to heavy traffic loads and environmental stressors, timely and accurate assessments of their condition are vital for preventing costly repairs and ensuring public safety. Non-Destructive Testing (NDT) methods, including Ground-Penetrating Radar (GPR), Infrared Thermography (IRT), and Impact Echo (IE), have proven to be valuable tools in detecting subsurface defects such as delaminations, corrosion, and debonding, offering a non-invasive alternative to traditional inspection techniques. However, incorporating NDT results into a comprehensive Bridge Management System (BMS) remains a challenge for many transportation agencies. This study explores the integration of NDT data into bridge management systems to improve decision-making for maintenance, repair, and rehabilitation (M&RR) strategies. By utilizing NDT data, agencies can move beyond subjective visual inspections and incorporate objective, data-driven insights into their asset management programs. The study outlines a framework for embedding NDT findings into decision support tools, allowing for the systematic evaluation of bridge deck conditions and the prioritization of interventions based on quantifiable deterioration measures. Key elements of this approach include the development of threshold values for triggering repairs or replacements, based on NDT indicators, and the application of these values in long-term planning models for maintenance scheduling and budgeting. The framework also emphasizes the importance of standardizing NDT data collection and interpretation to ensure consistency and reliability across various bridge management systems. By incorporating NDT into bridge management systems, transportation agencies can make more informed, objective decisions, improve the accuracy of deterioration models, and ultimately extend the service life of bridge decks. This research provides a roadmap for agencies seeking to enhance their bridge management practices through the integration of NDT technologies, supporting long-term infrastructure resilience and cost efficiency.