Abstract

This report evaluates the feasibility of 3D scanning technologies, including LiDAR, terrestrial laser scanning (TLS), and UAV photogrammetry, for improving bridge inspection practices. The study identifies challenges in adopting these technologies, particularly for detecting corrosion, section loss, and deformation in steel girders and other critical structural components. A framework is developed to integrate 3D scanning data with defect detection and structural analysis tools, ensuring compatibility with existing bridge inspection and asset management systems. The report provides practical guidelines for optimizing scanning strategies, data processing workflows, and implementation procedures to support Indiana’s bridge inspection practice. The proposed framework is designed to improve inspection accuracy, enhance efficiency, reduce field inspection time, and support data-driven decision-making for bridge maintenance and rehabilitation planning.

Keywords

3D scanning technology, bridge inspection, UAV photogrammetry, LiDAR, terrestrial laser scanning

Report Number

FHWA/IN/JTRP-2025/16

SPR Number

4731

Performing Organization

Joint Transportation Research Program

Publisher Place

West Lafayette, Indiana

Date of Version

2025

DOI

10.5703/1288284317880

SPR-4731 Technical Summary.pdf (1683 kB)
SPR-4731 Technical Summary

Share

COinS