The Shin-ga Bridge, located in Shin-ga-ri, Geumcheon-myeon, Naju-si, Jeollanam-do, is a two-lane road bridge with a total length of L=342.2m (14.8+14.8+41.5+4EA@50.0+41.5+16.3+13.3) in the RCS format + Steel Box Girder (2 rows) format. Ten years after its completion in 2005, a safety diagnosis was carried out to identify physical and functional defects in the target bridge and evaluate its current level of safety.