Construction of Koh Khsach Tonlea Bridge and Approach Roads (KTB Project)

Construction of the Koh Khsach Tonlea Bridge over the Bassac River connecting Koh Khsach Tonlea island (Sa'ang District, Kandal Province) with National Road 21 (NR21). The works include a 330 m continuous prestressed concrete box girder bridge (span arrangement 40m+75m+100m+75m+40m) built via balanced cantilever method, monolithic reinforced concrete piers, reverse T-abutments, cast-in-place large-diameter bored piles (~50m depth), a multi-cell RC box culvert (2.5mx2.0m), approach embankments, navigation fairway capital dredging, and rock rip-rap bank protection.