Final DTL2 civil works awards in SingaporeThe 40 km-long Downtown Line DTL, which is fully underground, is being built in three stages. DTL1 is targeted for completion in 2013, DTL2 in 2015, and DTL3 in 2016. The completed line will facilitate direct travel from the north-western and eastern areas of the island to the Central Business District (CBD) and Marina Bay. Click sg/23 and visit www.lta.gov.sg. 42/09. Downtown Line Map