Design of the Third Karnaphuli Bridge

The Third Karnaphuli Bridge is the first major cable-supported crossing to be constructed in Bangladesh. It spans the KarnaphuliRiver immediately to the north of Chittagong port. The main bridge in- cludes three 200 m long main river spans with an extradosedprestressed concrete single cell box girder deck constructed by the balanced cantilever method.The bridge is founded on alluvial soil affected by deep soil liquefaction and river scour. The foundations of the main bridge incorporate 3 m diameter bored cast in situ piles which were base grouted post-construction. Construction of the bridge commenced in July 2007 and the crossing was opened to traffic in July 2010.