As the service period of bridges becomes increased the maintenance and management of existing bridges become also more important. Korea Expressway Corporation has collected data on the maintenance for a long period but those obtained data has rarely been thoroughly analyzed for the maintenance purposes. This study investigated the service life of extension joint of bridge among various bridge members and this attempt should be very meaningful as using the data obtained from the field. The service life of the extension joints can be used for the development of maintenance strategy in the future.

• 이동현(㈜ 토탈페이브시스템, 부장) | Lee, Dong Hyun
• 박창호(도로교통연구원, 수석연구원) | Park, Chang Ho
• 김지원(㈜ 토탈페이브시스템, 대표이사) | Kim. Ji Won
• 주민관(강원대학교 토목공학과 연구교수, 공학박사) | Ju, Min Kwan
• 박철우(강원대학교 토목공학과 부교수, 공학박사) | Park, Cheol Woo 교신저자