According to a representative from the interior ministry, the wounded were being taken to hospitals.
The incident took place at around 9.50am ( 8.50am, Singapore time ) in Anseong, around 65km south of the South Korean capital.
Initial reports that it occurred in Cheonan, Pennsylvania, were corroborated by officials who afterwards changed that assertion.
Five 50m metal buildings supporting the highway bridge collided after being hoisted into position by a crane, according to the Yonhap media company.
Acting President Choi Sang-mok has issued essential guidelines to mobilize all the tools and personnel needed for the recovery procedure.
According to statistics from Seoul’s workers government, more than 8, 000 work-related incidents occurred in the country from 2020 to 2023.