line until the opening of DTL Stage 3 to Expo station on 21 October 2017. Extending the DTL tunnels from Chinatown to Fort Canning station was a challenge, due to the narrow space between two Housing and Development Board (HDB) blocks and the State Court along the route. In addition, the contractors had to divert the Singapore River for the tunnels’ construction. The DTL tunnels had to be stacked to overcome the space constraints. Before deciding on the route taken to cross the Singapore River, 20 other tunnel routes were considered by LTA engineers but were deemed too unsafe or too damaging to the environment or both. The diversion of the river was necessary as tunnelling underneath would risk sinking or flooding. The tunnel boring machine used could be obstructed by debris that remained stuck into the riverbed. There were considerations to dam the river but it would have disrupted businesses and tour boat operations along the river. The river diversion, which started in 2012, involved removing components of the river embankment, constructing a series of dams, strengthening the soil and excavating a new canal on the river’s west bank. After the canal was built, part of the original river course was drained and filled with soil for the tunnels' construction. The debris along the tunnels’ routes were removed using piling rigs before tunnelling works commenced. To ensure the construction would not pollute the river (which is connected to the Marina Reservoir), the LTA had to maintain adequate hydraulic flows. After boring through the area, the river was realigned to its original course. Station details Location The station is located within the Singapore Chinese ethnic enclave of Chinatown. The NEL station is situated underground between Eu Tong Sen Street and New Bridge Road, while the DTL is underneath Cross Street. The NEL site was chosen to avoid having to demolish the historical shophouses and buildings in the area. In addition, this station site is closely linked to shopping centres and busy pedestrian areas, such as Chinatown Point, Hong Lim Complex, People's Park Complex and The Majestic. Surrounding landmarks include the religious sites of Buddha Tooth Relic Temple, Masjid Jamae (Chulia), Fairfield Methodist Church, the Sri Mariamman Temple and the Sri Layan Sithi Vinayagar Temple. The station serves public amenities including the State Courts, Family Justice Courts, Chinatown Visitor Centre and the Kreta Ayer Community Centre. Services Chinatown station is served