The purpose of this study is to investigate the causes of corrosion of steel plate deck longitudinal U-ribs and to investigate the reinforcement method. It was confirmed that the corrosion of the longitudinal U-ribs occurred due to penetration water of the bolt hole of the shear key used in construction. The longitudinal U-ribs which were corroded were stiffened by attaching reinforcing plates, and finishing treatment was performed to prevent the surface water from flowing into the inside.

• 진상호(한국시설안전공단 국가시설관리본부 특수교관리센터 목포사무소) | Jin Sang-Ho
• 주형석(한국시설안전공단 국가시설관리본부 특수교관리센터 목포사무소) | Ju Hyeong-Seok
• 박승수(한국시설안전공단 국가시설관리본부 특수교관리센터 목포사무소) | Park Sung-Su
• 채성욱(한국시설안전공단 국가시설관리본부 특수교관리센터 목포사무소) | Chae Sung-Wook
• 이승철(익산지방국토관리청 해상교량안전과) | Le Seung-Chul