Fiber-reinforced polymer (FRP) composites are increasingly used in bridge construction and rehabilitation due to high strength-to-weight ratio, corrosion resistance, and durability. However, FRP-reinforced, strengthened, and standalone elements are susceptible to defects from environmental exposure, fatigue, creep rupture, and bond degradation. A major barrier to their broader adoption is the lack of standardized inspection and condition assessment procedures tailored to FRP systems. This study proposes nationally aligned framework for inspecting and condition rating FRP applications in bridges. It classifies FRP-related defects, identifies applicable nondestructive testing (NDT) methods, and establishes structured inspection procedures for external and internal FRP applications. Recommended approaches include visual inspection supported by tap testing, thermography, ground-penetrating radar, and ultrasonic testing. To ensure consistency, FRP-specific defect severity descriptors and condition rating criteria are aligned with AASHTO Manual for Bridge Element Inspection and FHWA Specifications for the National Bridge Inventory, supporting standardized evaluation and lifecycle management of bridges with FRP.
