Expo MRT station is a Mass Rapid Transit (MRT) interchange station on the East West line (EWL) and Downtown line (DTL) in the Tampines planning area, Singapore. The station lies between Changi City Point and the Singapore Expo, located along Changi South Avenue 1 at the junction of Expo Drive. The station is part of the two-station branch line which extends from Tanah Merah to Changi Airport station. Plans to connect the EWL to Changi Airport were finalised in 1996 and construction began in 1999. The station opened on 10 January 2001, a year earlier than Changi Airport station. It later became the terminus for the DTL upon the completion of Stage 3 of that line in 2017. On 25 May 2019, it was announced that the station will be incorporated into the Thomson–East Coast line (TEL), which is planned to extend to the airport's Terminal 5 by 2040. History Changi Airport branch In 1994, there were plans to build a new rail connection to Changi Airport. The alignment of the two-station branch, which included Expo station, was finalised through an announcement by Deputy Prime Minister Lee Hsien Loong on 15 November 1996. Contract 502 for the construction of Expo station and of track was awarded to a joint venture between Penta-Ocean Construction Limited and L&M Prestressing Pte Ltd for S$62.6 million (US$ million). The station opened on 10 January 2001 upon the request of Singapore Expo, a year before the opening of Changi Airport station. As part of the President's Challenge 2001 in September, a part of a charity walk went through the tunnel between Expo and Changi Airport stations. The branch line was later extended to Changi Airport when that station opened on 8 February 2002. As with most of the older above-ground stations along the EWL, the station was built without platform screen doors (PSDs). The half-height PSDs at Expo station began installation on 20 June 2011 and started operations on 31 August. Downtown line On 20 August 2010, the Land Transport Authority (LTA) that Stage 3 of the DTL (DTL3) would terminate at Expo station, where the DTL would interchange with the EWL. Contract 922 for the design and construction of Expo station and the overrun tunnels was awarded to Samsung C&T Corporation for S$211.35million (US$ million) in May 2011. On 28 November 2011, the LTA marked the start of construction of DTL3 with a groundbreaking