2025 Volume 4 Issue 1 Pages 58-68
The municipalities manage about 70% of the bridges in Japan, and only 62% of them have been repaired. This paper presents a practical study of the periodic inspection of bridges in Tamana City Hall as a case study, focusing on the characteristics of the periodic inspections that will continue to be conducted in the future, planning a gradual improvement of inspection work from the first to third rounds, and investigating whether deterioration has progressed during the second round using inspection records recorded in detail during the first round of inspections. In addition, we describe the process of bottom-up improvement by city officials who are improving the periodic inspections from the first to the third round in a step-by-step manner from the standpoint of front-line practitioners, and present a front-line practical example that reduced the periodic bridge inspection cost by about 30% in the third inspection round.
