Construction and property group, Koh Brothers Group Ltd, has won a contract worth S$582 million from the Land Transport Authority (LTA) to build the Downtown Line 1 Bugis station and its associated tunnels. Koh Brothers said this is the single largest contract it has ever clinched. The 4.3-kilometre section of the Downtown Line 1 runs from Bugis station on the East-West Line to Chinatown station on the...