Shin Geo-Je Bridge needs new inspection holes to improve the accessibility for various maintenances. This study evaluated the maximum von mises stresses(SE) of the bottom flange when the inspection holes is made with an ellipse shape. The FEM analysis results show that it is reasonable the hole is installed near the inflection point of the girder from a structural safety point of view though additional cost for the inspection walkway

• 정수형(한국시설안전공단 부장, 공학박사) | Jung, Soo Hyung
• 노태용(한국시설안전공단 사원, 공학석사) | Noh, Tae Yong Corresponding Author