The Seomjin Bridge, which was first installed in 1995, is a PCS BOX-type bridge that connects Gwangyang City and Yeongnam region with a total length of 700.0m and a width of 18.5m (four lanes). Due to aging of the facility, maintenance work is being carried out to improve the stability and durability of the bridge, including repairing the cross-section of the bridge piers, repairing/maintenance of cracks, neutralization and prevention of salt damage, as well as cross-section reinforcement of the bridge foundation, underwater cross-section reinforcement, and pile reinforcement work.