Four workers are dead after a bridge collapsed at a highway construction site in Anseong, Gyeonggi Province, some 80 kilometers south of Seoul, Tuesday.

The fire headquarters of South Chungcheong Province said five other workers were critically injured and one had a minor injury. 

Slabs on the bridge pier collapsed around 9:50 a.m. at the construction site on a section of the Seoul-Sejong expressway. 

Rescue work ended after a missing worker was found dead at 2:21 p.m. 

After activating a Level Two response posture, authorities issued an order mobilizing firefighters and national firefighting resources to ensure a comprehensive national response.