Structure analysis and field instrumentation were carried out to understand the cause of crack taken place on a cover plate of a lower flange in plate-girder bridge.
A cause of the crack turn out to be fatigue stress so that the bridge is in need of repair and reinforcement such as surface grinding, rewelding after gouging and reinforcement for a part of welding on a cover plate.

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