With Bangladesh’s economic growth driving increased demand for rail transport, the Jamuna Multipurpose Bridge (serving as a combined road and rail crossing) played a vital role. However, issues such as vibration and progressing concrete cracks led to speed and weight restrictions, operational delays, and made countermeasures an urgent priority.

　This project, financed through Japan’s ODA loan, constructed a dedicated railway bridge parallel to the existing bridge, located 300 meters upstream, to enhance safety and improve logistics efficiency. For the superstructure, weathering steel as a Japanese technology was adopted to reduce life-cycle costs, eliminating the need for future repainting.

　The contract was awarded in April 2020, precisely when the COVID-19 pandemic intensified, causing severe workforce shortages due to travel restrictions and quarantine measures. Further challenges arose in August 2024 when anti-government movements toppled the Hasina administration, triggering political instability, communication blackouts, and curfews that disrupted personnel and material transport.

　Additionally, the Jamuna River (one of the world’s largest by discharge) posed natural challenges: increased flow velocity during the monsoon and riverbed dredging during the dry season hindered schedule control.

　To recover delays caused by these environmental, global, and political factors, we mobilized an average of 500 workers per day and implemented a seven-team system for steel truss erection, achieving significant time savings.
　As a result, we successfully balanced overall schedule management with safe construction, completing this critical infrastructure to meet future rail transport demand and celebrating its inauguration on March 18, 2025.