Even though a falling-off in durability and a decrease of safety was caused by environmental factors, there are various cases that it is difficult for structure to diagnose and review exactly because of their working condition. In this study, we show an example which is an inspection of a small waterway culvert having three boxes. It will be used helpfully to evaluate a like structure.

• 이병주(한국도로공사 도로교통연구원, 책임연구원, 공학박사) | Lee, Byeong Ju
• 윤주용(한국도로공사 도로교통연구원, 연구원, 공학석사) | Yoon, Ju Yong