The Red Line or Line 5 is one of the under construction lines of Chennai Metro Phase-II stretching from Madhavaram Milk Colony to Sholinganallur. The -long line will consist of 45 stations, station would be shared between the Purple and Red Lines, and is considered as a single station. out of which six will be underground and 39 will be at grade or elevated. A branch line of corridor five, known as Line 5B, from Koyambedu to Pattabiram has been proposed with its Detailed Project Report approved by Government of Tamil Nadu in May 2025. The branch line will consist of 19 elevated stations.
Planning and construction Phase II The construction of the first phase of Chennai Metro started in June 2009. Commercial operations started on the green line in June 2015. On 10 February 2019, the extension of blue line was opened, completing the first phase of the metro.
In July 2016, Government of Tamil Nadu announced that the second phase would have three lines totaling in length with 104 stations. Two corridors would extend from Madhavaram connecting with Siruseri and Sholinganallur respectively (lines 3 and 5) with the third corridor connecting Koyambedu with Lighthouse (line 4). The fifth line connecting Madhavaram Milk Colony and Sholinganallur will extend to of which would be elevated and underground. It will consist of 48 stations including six undergrounds stations. The stations for the second phase were designed to be smaller than the existing stations operational in the first phase.
On 20 November 2020, foundation stone for the second phase was laid and construction commenced. In November 2022, Alstom was awarded the contract to supply metro coaches for the phase II expansion. In May 2023, CMRL announced a revised plan for the second phase revising the station count on the fifth line to 45.8 As per the final plan, the line will extend for .
+Chennai Metro - Phase IILine NameTerminalsLength (km)StationsStatusRed LineMadhavaram Milk ColonySholinganallur4745Under construction
The second phase is estimated to cost of which initially was loaned by Japan International Cooperation Agency. On 14 February 2021, the Prime Minister of India announced that the government has set aside for the construction of phase II and further extension. The line is expected to be completed by 2028.
Phase II extension In 2022, the state government proposed a branch extension for the fifth line from Koyambedu to Avadi, covering an approximate . In early 2024, feasibility report was submitted by CMRL for the proposed expansion of the line, green lighting the same. It was later decided to extend the line till Pattabiram. The Detailed Project Report was approved by the Government of Tamil Nadu in May 2025 and forwarded to the Government of India for final approval. A depot near Pattabiram stretch of Outer Ring Road is also planned as a part of the expansion.
+Chennai Metro - Phase II Extension - Line 5B LineTerminals Length Stations StatusRed Line KoyambeduPattabiram19 approved
Stations Red LineS.NoStation NameExpected OpeningConnectionsLayout English Tamil1மாதவரம் பால் பண்ணைDecember 2028 (Under Construction)Underground2மாதவரம் பணிமனைDecember 2028 At-grade 3அசிசி நகர்December 2028 Elevated4மஞ்சம்பாக்கம்December 2028Elevated5வேல்முருகன் நகர்December 2028Elevated6மாதவரம் பேருந்து நிலையம்December 2028 Madhavaram Mofussil Bus Terminus Elevated7சாஸ்திரி நகர்December 2028Elevated8ரெட்டேரி சந்திப்புDecember 2028Elevated9கொளத்தூர் சந்திப்புDecember 2028 Underground10சீனிவாச நகர்December 2028Underground11Villivakkamவில்லிவாக்கம்December 2028 Villivakkam (West Line)Underground12வில்லிவாக்கம் பேருந்து நிலையம்December 2028Underground13வில்லிவாக்கம் சி.டி.எச் சாலைDecember 2028Underground14அண்ணா நகர் மேற்குDecember 2028 Elevated15திருமங்கலம்December 2028Elevated16அண்ணா நகர் கே.விDecember 2028Elevated17கோயம்பேடுMarch 2027Elevated18கோயம்பேடு அங்காடிMarch 2027Elevated19நடேசன் நகர்March 2027Elevated20விருகம்பாக்கம்March 2027Elevated21ஆழ்வார்திருநகர்March 2027 (Under Construction)Elevated22வளசரவாக்கம்March 2027 (Under Construction)Elevated23காரம்பாக்கம்March 2027 (Under Construction)Elevated24ஆலப்பாக்கம் சந்திப்புMarch 2027 (Under Construction)Elevated25முகலிவாக்கம்March 2027Elevated26ராமாபுரம்March 2027Elevated27மணப்பாக்கம்March 2027Elevated28சென்னை வர்த்தக மையம்March 2027Elevated29பட் சாலைMarch 2027Elevated30 ஆலந்தூர்March 2027Elevated31பரங்கிமலைDecember 2027 St. Thomas Mount (South Line) St. Thomas Mount
(Chennai MRTS)Elevated32ஆதம்பாக்கம்December 2027 Adambakkam (Chennai MRTS)Elevated33வானுவம்பேட்டைDecember 2027Elevated34உள்ளகரம்December 2027Elevated35மடிப்பாக்கம்December 2027Elevated36கீழ்க்கட்டளைDecember 2027Elevated37ஈச்சங்காடுDecember 2027Elevated38கோவிலம்பாக்கம்December 2027Elevated39வெள்ளக்கல்December 2027Elevated40மேடவாக்கம் IDecember 2027Elevated41மேடவாக்கம் IIDecember 2027Elevated42பெரும்பாக்கம்December 2027Elevated43செம்மொழித் தமிழாய்வு நிறுவனம்December 2027Elevated44எல்காட்December 2027Elevated45சோழிங்கநல்லூர்December 2027 (Under Construction) Elevated46Padi Pudhu Nagar*பாடி புதுநகர்TBA TBA47Park Road*பூங்கா சாலை48Golden Colony*கோல்டன் காலனி49Vavin 1st Main road*வாவின் முதல் பிரதான சாலை 50Ambattur Estate*அம்பத்தூர் தொழிற்பேட்டை Ambattur Estate Bus Terminus51Ambattur Bypass*அம்பத்தூர் புறவழிச்சாலை52Dunlop*டன்லப்53Ambattur*அம்பத்தூர் Ambattur (West Line) 54Ambattur OT*அம்பத்தூர் ஒ.டி.55Stedford Hospital*ஸ்டெட்போர்டு மருத்துவமனை56Thirumullaivoyal*திருமுல்லைவாயல்57Vaishnavi Nagar*வைஷ்ணவி நகர்58Murugappa College*முருகப்பா கல்லூரி59Avadi*ஆவடி Avadi (West Line) Avadi Bus Terminus 60Kasturibai Nagar*கஸ்தூரிபாய் நகர்61Hindu College*இந்து கல்லூரி Hindu College (West Line)62Pattabiram*பட்டாபிராம்63Pattabiram Outer Ring Road*பட்டாபிராம் வெளிவட்ட சாலை under construction
* - To Be Confirmed
See also Rapid transit in India List of metro systems
Notes
References