This paper presents the definition of bridge life and the end-of-life criterion of bridge for bridge maintenance purpose. Bridge life can refer to the period of time in which the bridge meets all desired levels of its functions maintained by maintenances. The end-of-life criterion of bridge can defined when a damage score of an entire bridge reach 0.64, the bridge is assumed to be end of life.

• 정유석(충남대학교 방재연구소, 박사후연구원) | Jeong, Yoseok
• 김우석(충남대학교 토목공학과, 조교수) | Kim, WooSeok 교신저자
• 이일근(한국도로공사 도로교통연구원, 책임연구원) | Lee, ilkeun
• 박창호(한국도로공사 도로교통연구원, 수석연구원) | Park, Changho
• 민근형(충남대학교 토목공학과, 석사과정) | Min, Geunhyeong