This morning, a domino collapse of bridge girders occurred at a bridge construction site in the Eco Delta City project in Busan.
Below is a brief overview of the incident and the structural aspects based on current information.
Incident Overview
Time: Morning of June 11, 2026
Location: River crossing bridge at the Eco Delta City Phase 3 construction site in Busan
Details: Over 10 Pre Stressed Concrete girders, which had been placed on the substructure, tipped over laterally in a chain reaction and fell into the water.
Casualties: Two site workers sustained non life threatening injuries.
Bridge Specifications and Erection Method
Superstructure: Pre Stressed Concrete Girders
Erection Method: Crane lifting method, where precast girders are hoisted and placed onto the piers using heavy equipment.
Structural Features: The girders visible in the photos appear to be I section concrete members, characterized by heavy self weight and a high center of gravity.
Site Situation Analysis
Based on the site photos, this appears to be a typical domino effect collapse. It is likely that one girder lost its balance and struck adjacent girders before sufficient lateral bracing or temporary supports were fully secured. The incident seemingly occurred during or immediately after the crane placement, representing a highly vulnerable phase before the installation of cross beams or permanent lateral connections.
Authorities are currently investigating the exact cause, including equipment rigging conditions and adherence to safety protocols. This incident highlights the critical importance of temporary bracing and lateral stability during the erection of heavy structural components.
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