Parliament Question: Fourth railway line between Tambaram and Chengalpattu

GOVERNMENT OF INDIA MINISTRY OF RAILWAYS RAJYA SABHA UNSTARRED QUESTION NO. 3951 ANSWERED ON 27.03.2026 FOURTH RAILWAY LINE BETWEEN TAMBARAM AND CHENGALPATTU 3951 DR. KANIMOZHI NVN SOMU: Will the Minister of RAILWAYS be pleased to state: (a) the status and objectives of the sanctioned fourth railway line between Tambaram and Chengalpattu (31 km), along with the approved timeline; (b) whether Government has examined the feasibility of extending the fourth line from Chengalpattu to Madurantagam in view of projected commuter and freight demand; (c) whether any preliminary surveys or feasibility studies have been undertaken, if not, whether such studies are proposed; and (d) the expected impact on suburban frequency, punctuality and corridor capacity upon completion? ANSWER MINISTER OF RAILWAYS, INFORMATION & BROADCASTING AND ELECTRONICS & INFORMATION TECHNOLOGY (SHRI ASHWINI VAISHNAW) (a) to (d): Tambaram - Chengalpattu 4th line (30 Km) has been sanctioned recently and work taken up. Final Location Survey for Chengalpattu – Madurantakam -Melmaruvattur 3rd & 4th line (35 Km) has been sanctioned for preparation of Detailed Project Report (DPR). After preparation of Detailed Project Report (DPR), sanctioning of project requires consultation with various stake-holders including State Governments and necessary approvals viz. appraisal of NITI Aayog, Ministry of Finance etc. As sanctioning of projects is a continuous and dynamic process, exact timelines cannot be fixed. Sanction of any railway project depends upon many parameters/factors which include the following:  Anticipated traffic projections and remunerativeness of the proposed route  First and last mile connectivity provided by the project  Connection of missing links and providing additional route  Augmentation of congested/saturated lines  Demands raised by State Governments/Central Ministries/Public representatives  Railway’s own operational requirements Page 1 of 4 § Socio-economic considerations  Overall availability of funds Tamil Nadu:- Railway Budget:- Budget allocation in the recent years has increased significantly. Budget allocation for infrastructure projects and safety works, falling fully/partly in the State of Tamil Nadu is as under: Period Outlay 2009-14 ₹879 crore/year 2025-26 ₹ 6,626 crore (more than 7.5 times) Projects sanctioned:- As on 01.04.2025, 15 projects (09 new line, 03 gauge conversion and 03 doubling) of 1,700 km length, costing ₹22,808 Crore, falling fully/partly in the State of Tamil Nadu, are sanctioned. The summary is as under:- Category No. of Total Length Length Expenditure sanctioned (in km) Commissioned upto Mar’ 25 projects upto Mar’25 (₹ in Cr.) (in km) New Line 9 812 24 1,337 Gauge Conversion 3 748 604 3,471 Doubling /Multitracking 3 140 37 2,783 Total 15 1,700 665 7,591 Zonal Railway wise details of Railway projects are made available in public domain on Indian Railway’s website. Recently Completed Projects:- Details of some of the recently completed projects falling fully/partly in Tamil Nadu are as under : Page 2 of 4 §S.N Cost Project . (₹in Crores) 1 Dindigul-Palani-Pollachi gauge conversion (121 km) 610 2 Pollachi-Palghat gauge conversion (56 km) 350 3 Pollachi-Podhanur gauge conversion (40 km) 400 4 Quilon-Tirunelveli-Tiruchendur gauge conversion (357 km) 1,122 5 Mayiladuturai-Thiruvarur-Karaikkudi gauge conversion (187 km) 1,338 6 Madurai-Bodiyakannur gauge conversion (90 km) 593 7 Chengalpattu-Villupuram doubling (102 km) 670 8 Tiruvallur-Arakkonam 4th line (27 km) 83 9 Chennai Central-Basin Bridge doubling (2 km) 31 10 Thanjavur-Ponmalai doubling (48 km) 370 11 Villupuram-Dindigul doubling (273 km) 2,000 12 Chennai Beach-Korukkupet 3rd line (5 km) 168 13 Chennai Beach-Attipattu 4th line (22 km) 293 14 Omalur-Metturdam Patch doubling (29 km) 327 15 Chengalpattu-Villupuram and Tambaram-Chengalpattu-3rd line (133 km) 1,122 16 Salem-Magnesite Junction-Omalur doubling (11 km) 115 17 Madurai- Maniyachi-Tuticorin doubling (160 km) 1,891 18 Maniyachi-Nagercoil doubling (102 km) 1,752 19 Chennai Beach-Chennai Egmore doubling (4 km) 272 20 Karaikal-Peralam new line (23 km) 373 21 Northern End Port connectivity to Karaikal Port (1 km) 18 Ongoing Projects:- Some of the projects falling fully/partly in the State of Tamil Nadu which have been taken up are as under : Cost S.N Project (₹ in Crores) 1 Tindivanam-Nagari new line (184 km) 3,631 2 Morappur-Dharmapuri new line (36 km) 359 3 Nagapattinam-Tiruturaipundi new line (43 km) 742 4 Trivandrum-Kanyakumari doubling (87 km) 3,785 5 Arakkonam yard 3rd & 4th line (6 km) 98 6 Perambur - Ambattur 5th & 6th lines (6 Km) 178 7 Irugur-Podanur doubling (11 Km) 277 8 Tambaram-Chengalpattu 4th Line (30 km) 757 9 Attipattu-Gummidipundi 3rd & 4th line (23 km) 375 10 Tirupati-Pakala-Katpadi doubling (105 km) 1,332 11 Tindivanam-Gingee-Tiruvannamalai New Line (71 Km) 1,400 12 Atipattu – Puttur New Line (88 Km) 1,700 13 Chennai – Cuddulore via Mahabalipuram New Line (179 2,670 Km) Execution of important infrastructure projects falling fully/partly in the State of Tamil Nadu are held up due to delay in land acquisition. Status of land acquisition in Tamil Nadu is as under: Page 3 of 4 §Total Land required for Projects in Tamil Nadu 4,326 ha Land Acquired 1,052 ha (24%) Balance Land to be acquired 3,274 ha (76%) Support of the Government of Tamil Nadu is needed to expedite the land acquisition. Details of some major projects which are delayed due to land acquisition are as under:- SN Name of the project Total land Land Balance required acquired Land to be (in ha) (in ha) acquired (in ha) 1. Tindivanam - Tiruvannamalai new line 2 7 6 33 243 (71 km) 2. Attiputtu-Puttur new line (88 km) 189 0 189 3. Morappur-Dharmapuri new line (36 km) 92 45 47 4. Mannargudi-Pattukkottai new line (41 km) 196 0 196 5. Thanjavur-Pattukottai new line (52 km) 152 0 152 Further, Rameshwaram – Dhanushkodi new line (18 km) was sanctioned at a cost of ₹734 Cr. The Foundation Stone of the project was laid on 01.03.2019. However, the project could not be started because the land acquisition has not been undertaken by the State Govt. of Tamil Nadu. Government of India is geared up to execute projects, however success depends upon the support of Government of Tamil Nadu. Completion of Railway project/s depends on various factors which include the following:  Land acquisition by State Government  Forest clearance  Shifting of infringing utilities  Statutory clearances from various authorities  Geological and topographical conditions of area  Law and order situation in the area of project site  Number of working months in a year for particular project site etc. All these factors affect the completion time and cost of the project/s. ***** Page 4 of 4 §