ceremony at Expo station. To facilitate the construction of the DTL station and its tunnels, part of Changi South Avenue 1 towards Somapah Road and Changi South Avenue 2, together with a short section of Expo Drive, were temporarily closed to traffic from 2 October 2011 to May 2017. The construction of the station also involved the underpinning of two existing Expo MRT viaduct pier foundations. A transfer-beam was constructed before the excavation to support the two pillars and hydraulic jacks were installed on the transfer beam. Subsequently, the existing pilers were cut away. The underpinning works were carried out successfully without disruption to the EWL's operations. On 31 May 2017, the LTA announced that the station, together with the rest of DTL3, would be opened on 21 October that year. Passengers were offered a preview of the station along with the other DTL 3 stations through an open house on 15 October. Future plans The DTL is projected to be extended from Expo station via Xilin to Sungei Bedok MRT station as part of the DTL3 extension (DTL3e). Expected to be completed in 2024, the extension was constructed in tandem with the adjacent East Coast Integrated Depot. The extension is expected to provide better public transport service to Changi Business Park. On 25 May 2019, as part of the Land Transport Masterplan 2040, the LTA announced that the stretch between Tanah Merah and Changi Airport would also be part of the proposed Thomson–East Coast line (TEL) extension to Changi Airport from Sungei Bedok station via the future Changi Airport Terminal 5. Station details Location As the name suggests, the station serves the convention centre of Singapore Expo. The elevated EWL station is located along Changi South Avenue 1 while the DTL station is underneath the junction of the road and Expo Drive. In addition to the Singapore Expo, the station serves the retail development of Changi City Point, as well as various offices in Changi Business Park such as UE Bizhub East, IBM Place and DBS Asia Hub. Services The station is an interchange station on the EWL and DTL. On the EWL, the station is between the Tanah Merah and Changi Airport stations on the Changi Airport branch. Train services to Expo station initially operated as a 2-station shuttle service from Tanah Merah station, then briefly converted to a through service from Boon Lay station when the branch