The anchor bolts of pot bearing are broken at the fixed end of the lamp bridge which is beside the main bridge. And the pot bearing is moved off about 30mm. The site measurement were performed in order to find out the cause. The measurement scheme and the cause analysis of the movement will be introduced. The proper reinforcement and repair will be ready in according to the results of the cause analysis.

• 정수형(한국시설안전공단 고속도로실 실장, 공학박사) | Jung, Su Young
• 김종호(한국시설안전공단 고속도로실 차장, 공학박사) | Kim, Jong Ho
• 박성우(한국시설안전공단 고속도로실 차장, 구조기술사) | Park, Sung Woo
• 이재욱(한국시설안전공단 고속도로실 과장) | Lee, Jae Uk