Neak Loeung Bridge also known as SPIEN TSUBASA is located at Asian Highway No. 1 which spans across the great Mekong River and connects Phnom Penh, Cambodia to Ho Chi Minh City, Vietnam. The Bridge which spans across the great Mekong River is 2,215 m long with 3,185 m of Approach Road, this makes the entire project 5.4 km long. The Project is funded by Japan ODA grant aid.
Antara Koh was employed by the Main Contractor as the specialist sub-contractor to carry out the construction of the foundation piles in the two main piers which supported the two main pylons and two approach piers in the Mekong River. The piles in the main piers were 2,500 mm in diameter, 62 m to 70 m long each. The piles were partially cased and bored by RCD drilling with bentonite slurry method.