St. Thomas Mount railway station, locally known as Mount railway station or Parangimalai station, is one of the railway stations of the Chennai BeachâÂÂChengalpattu section of the Chennai Suburban Railway Network. It serves the neighbourhood of St. Thomas Mount and Pazhavanthangal, which are suburbs of Chennai. It is located at a distance of from Chennai Beach terminus, with an elevation of above sea level.
The station is also an integrated railway station for all the three modes of rail transport in the city, namely, Chennai suburban railway, MRTS, and Metro Rail. The MRTS part was opened for public on 14 March 2026.
St. Thomas Mount Metro station is a Metro-cum-MRTS railway station on the Green Line of the Chennai Metro. The station is an elevated station abutting the surface-level St. Thomas Mount suburban station of the Chennai Suburban Railway Network. The metro level of the station started functioning on 14 October 2016 while the MRTS level is set to open on 14 March 2026.
The new terminal is envisaged as an integrated railway station for all the three modes of rail transport in the city, namely, Chennai BeachâÂÂChengalpattu section of the Chennai Suburban Railway, terminal point of Chennai BeachâÂÂSt. Thomas Mount MRTS, and Chennai CentralâÂÂSt. Thomas Mount Metro Rail.
The station will include access to all the 3 suburban rail modes of the city, at multiple levels. The integrated station will have three levels, namely, ground level for suburban station, level 1 for MRTS, and level 2 for Metro Rail. The length of the platform at the Metro station will be 140 m and the entire station complex will have a total built-up area of 48,000 sq m.
The existing suburban station at ground level can be accessed from new terminal using a foot overbridge.
As per the new design, the elevated station will have a Metro Rail station on the top floor, followed by an MRTS station a level below and then a vast concourse area for commuters to switch over to these two modes or to step down to the ground level, which will house â new ground level platform â for suburban trains, within the new Station block.
The concourse will have ticket booths and escalators and lifts will take commuters to the platforms above.
The MRTS will be at a height of 12 m.
The station is among the elevated stations along Green Line of the Chennai Metro: Chennai CentralâÂÂSt. Thomas Mount stretch. The station will be the tallest of elevated stations of the Chennai Metro, coming up at a height of 23 m.
The station lies in the Chennai BeachâÂÂTambaram section of the Chennai Suburban Railway Network, the first suburban section of the city. With the completion of track-lying work in March 1931, which began in 1928, the suburban services were started on 11 May 1931 between Beach and Tambaram, and was electrified on 15 November 1931, with the first MG EMU services running on 1.5 kV DC. The section was converted to 25 kV AC traction on 15 January 1967.
As of 2012, an integrated terminal for Chennai Metro and MRTS is under construction at the station complex at a cost of 780 million. The construction is expected to be completed by September 2013. The 780-million contract for the construction of the station was initially awarded to Consolidated Construction Consortium Limited (CCCL). However, owing to delay the contract was terminated and is being given to a new contractor.
As of 2023, the station had a footfall of 30,000 passengers a day. The task of upgrading of St. Thomas Mount station alongwith 72 other stations in Tamil Nadu, was taken up in 2023 under Indian Railway's Amrit Bharat Station Scheme at a cost of 141.5 million and was inaugurated on 23 May 2025.
With the integration of five modes of public transport â suburban railway, Southern Railway, Metro Rail, MRTS and public buses the station is expected to become the city's largest transit hub after Chennai Central.
A two-lane circular road has also been planned around the station so that buses can pick up commuters. Anticipating increased patronage upon the completion of Metro Rail, the Medavakkam-Madipakkam road that runs in front of the station is being widened. It is expected that MRTS and metro rail services will together bring in more than 100,000 commuters at the station.
Parking facility include 10,000 sq m space at the ground level and provisions for 3,000 two-wheelers at level 1. Upon completion, the station will be the third largest in the city after Chennai Central and Chennai Egmore.
In June 2013, Southern Railway started the ground work to extend platforms at the station to halt express trains. A spare platform of the station, which is being used to park old rakes, is being extended at an estimated cost of 60 million. The platform, which can currently take only 22-coach trains, will be expanded to handle 24-rake trains and a link track will be laid.