Line 4 (Mumbai Metro)

Last updated

MMRDA logo cropped.svg Mumbai Metro Green Line 4
Maha Mumbai Metro.png
Overview
Status
  • Line 4 (under construction)
  • Line 4A (under construction) [1]
Owner MMRDA
Line number4
Locale Mumbai and Thane, Maharashtra, India
Termini
Stations32 + 2 extended 34
Website Line 4
Service
Type Rapid Transit
System Mumbai Metro
Operator(s) MMRDA
Depot(s)Mogharpada
Rolling stock Alstom
History
Planned openingDecember 2025;7 months' time (2025-12) [2]
Technical
Line length32.32 km (Line 4)
2.7 km (Line 4A)
Number of tracks2
CharacterElevated
Track gauge 1,435 mm (4 ft 8+12 in) standard gauge
Operating speed90 km/h (56 mph)
Highest elevation3.90 m (12.8 ft)
Route map

Contents

Line 4
BSicon uexhCONTg.svg
to BSicon exSUBWAY-CHN.svg Line 10
BSicon uexhACC.svg
0.0000
Gaimukh
BSicon uexhABZgl.svg
BSicon uexKDSTeq.svg
BSicon lhSTRe@gq.svg
Mogharpada Depot
BSicon uexhACC.svg
1.2830
Gowniwada
BSicon uexhACC.svg
2.6679
Kasarvadavali
BSicon uexhACC.svg
3.7414
Vijay Garden
BSicon uexhACC.svg
4.6502
Dongripada
BSicon uexhACC.svg
6.1158
Tikuji-ni-wadi
BSicon uexhACC.svg
6.8914
Manpada (Thane)
BSicon uexhACC.svg
BSicon HUBaq.svg
BSicon uexhKACCaq.svg
BSicon HUBeq.svg
BSicon uexhCONTfq.svg
7.7567
Kapurbawdi on BSicon exSUBWAY-CHN.svg Line 5
BSicon uexhACC.svg
9.1459
Majiwada
BSicon uexhACC.svg
9.9701
Cadbury Junction
BSicon uexhACC.svg
10.7628
Mahapalika Marg
BSicon uexhACC.svg
11.7987
RTO Thane
BSicon uexhACC.svg
12.4772
Teen Haath Naka (Thane)
BSicon uexhACC.svg
13.7135
Mulund Naka
BSicon uexhACC.svg
15.0615
Mulund Fire Station
BSicon uexhACC.svg
16.1744
Sonapur
BSicon uexhACC.svg
BSicon CONTl+f.svg
17.5651
Shangrila
BSicon uexhACC.svg
BSicon XPLTaq.svg
BSicon XPLTq.svg
BSicon XBHF-R.svg
18.4087
Bhandup Indian Railways Suburban Railway Logo.svg Central line
BSicon uexhACC.svg
BSicon STR.svg
19.4575
Bhandup Mahapalika
BSicon uexhACC.svg
BSicon STR.svg
20.2368
Naval Housing
BSicon uexhACC.svg
BSicon XPLTaq.svg
BSicon XPLTTa.svg
BSicon XBHF-R.svg
20.9286
Gandhi Nagar (Kanjurmarg) Indian Railways Suburban Railway Logo.svg
Kanjurmarg on
Central line
BSicon uexvCONTgq.svg
BSicon lhvSTRq.svg
BSicon uexKRZvu.svg
BSicon lhvSTRq.svg
BSicon uexlvDSTq.svg
BSicon lvINTACCq.svg
BSicon uexhvSTRq.svg
BSicon emKRZvu.svg
BSicon lhvSTRq.svg
BSicon uexvCONTfq.svg
BSicon lhvSTRq.svg
Kanjurmarg (West) on BSicon exSUBWAY-CHN.svg Line 3 and Line 6
BSicon uexhACC.svg
BSicon STR+l.svg
BSicon STRr.svg
21.9307
Surya Nagar
BSicon uexhACC.svg
BSicon XPLTaq.svg
BSicon XBHF-R.svg
22.9354
Vikhroli
BSicon uexhACC.svg
BSicon STR.svg
23.6585
Godrej Company
BSicon uexhACC.svg
BSicon STR.svg
24.8213
Shreyas Cinema
BSicon CONTf+l.svg
BSicon uxmhKRZ.svg
BSicon STRr.svg
Indian Railways Suburban Railway Logo.svg Central line
BSicon uexhACC.svg
25.4421
Laxmi Nagar
BSicon uexhACC.svg
26.5196
Pant Nagar
BSicon uexhACC.svg
28.1522
Garodia Nagar
BSicon uexhACC.svg
28.7507
Amar Mahal Junction
BSicon RP4e.svg
BSicon uexhSKRZ-G4.svg
BSicon dRP4q.svg
Santacruz–Chembur Link Road
BSicon CONTgq.svg
BSicon uxmhKRZ.svg
BSicon CONTfq.svg
Indian Railways Suburban Railway Logo.svg Harbour line
BSicon uexhACC.svg
30.0942
Siddharth Colony
BSicon uexhCONTgq.svg
BSicon uexhKRZhu.svg
BSicon uexhCONTfq.svg
Line 2
BSicon uexhACC.svg
31.1486
Suman Nagar
BSicon CONTgq.svg
BSicon uxmhKRZ.svg
BSicon CONTfq.svg
Kurla–Mahul BP Refinery line
BSicon uexhACC.svg
32.2269
Anik Nagar Bus Depot
BSicon uhCONTgq.svg
BSicon uhSTR+r.svg
BSicon uexhACC.svg
33.0885
Wadala Truck Terminal
BSicon uhACC.svg
BSicon HUBaq.svg
BSicon uexhACC.svg
BSicon HUBeq.svg
34.0885
Bhakti Park (Wadala)
BSicon uhSTRl.svg
BSicon uxhKRZhu.svg
BSicon uhCONTfq.svg
BSicon MONO.svg on Line 1 (Mumbai Monorail)
BSicon uexhCONTf.svg
to BSicon exSUBWAY-CHN.svg Line 11

Line 4 (Green Line) is an under construction rapid transit metro line of the Mumbai Metro in the city of Mumbai, Maharashtra, India.

The Mumbai Metropolitan Region Development Authority (MMRDA) and a consortium of international companies are developing the line. [3]

The 32.32 km (20.08 mi) line is planned to be fully elevated, and is expected to consist of 32 stations from Wadala (Mumbai) to Kasarvadavali (Ghodbunder road, Thane) via Chembur, Bhandup Mulund and Teen Hath Naka, a popular traffic crossing in Thane. It is estimated to cost ₹14,549 crore. [4] Its construction was expected to begin by June 2018.

Alstom was chosen to provide rolling stock for the line, but the contract was initially cancelled in 2022. [5] [6]

Planning

In June 2015, the Mumbai Metropolitan Region Development Authority (MMRDA) proposed building a 32 km (19.88 mi) Wadala-Thane-Kasarvadavali metro line as part of a plan to build six new metro lines at a total estimated cost of 64,000 crore (US$7.6 billion). [7] Line 4 was approved in June 2016, [8] and was estimated to cost 14,549 crore (US$1.7 billion). [9]

The foundation stone for Metro 4 was laid by Prime Minister Narendra Modi on 24 December 2016. [10] The Maharashtra Coastal Zone Management Authority granted Coastal Regulation Zone (CRZ) clearance to the project in February 2017. Over 1 km (0.62 mi) of the line passes over water bodies in Bhakti Park and Wadala, both areas classified as CRZ II, where regulations limit construction activities. A total of 48 piers are proposed to be built in the CRZ II zone. The MMRDA proposed building metro car depots for the line on a 30-hectare (74-acre) plot at Owala village in Thane district and another in Vikhroli. [11] The agency stated that the line would require two depots due to its length. [12]

The MMRDA used a drone to carry out survey work for Metro 4. The drones were fitted with 360 degrees camera that provide up to 3 millimetres (0.12 in) accuracy. The aerial survey takes less time than a regular survey, achieves greater accuracy and helps protect against false claims for compensation. [13] In February 2017, the MMRDA said it was studying the feasibility of extending the corridor from Kasarvadavali to Gaimukh. [14] In March 2017, the agency said that it was conducting a pre-feasbility study on extending the line from Wadala to Mumbai General Post Office in South Mumbai, via the Mumbai Port Trust. The proposed 8 km (4.97 mi) extension is estimated to cost 300 crore per kilometer. [15] [16] The extension from Kasarvadavli to Gaimukh was approved by Fadnavis at the 144th meeting of the MMRDA on 12 January 2018. The 2.7 km (1.68 mi) extension is estimated to cost 949 crore (US$110 million). [17] [18]

The MMRDA appointed Systra MVA Consulting India Pvt. Ltd. as the detail design consultants for Line 4 on 9 November 2017. [19] A consortium of DB Engineering, Louis Berger and Hill International was awarded a project management and construction management services contract for the Metro 4 project in April 2018. [20] [21] In October 2018, the MMRDA announced that it would construct Metro 4 along with three flyovers to minimize traffic disruption, with the metro running on the upper deck of the flyover. The three flyovers will be built at Bhayander Pada, Kasarvadavli and Anandnagar near Ghodbunder. [22] [23]

In May 2019, MMRDA Metropolitan Commissioner R.A. Rajeev announced a modified plan to use Siddharth Colony as the interchange station with Line 2. The original plan had proposed to use the Eastern Express Highway station on Line 2B and Siddharth Colony on Line 4 as the interchange stations. However, the two stations are approximately 480 metres (1,570 ft) away from Siddharth Colony and the change was made to simplify passenger transfers. [24]

Depot

The MMRDA considered plots in Wadala, Aarey Colony and Gaimukh Nagar in Thane to build a depot for the line. [25] On 16 October 2023, the state urban development allotted a 174-hectare (430-acre) plot of land at Mogharpada in Thane to the MMRDA at no cost. Nine hectares of the plot is reserved for use by the BMC for the Coastal Road and a further 29 hectares (72 acres) is protected mangrove land. The MMRDA will utilize a portion of the remaining plot to build a depot that serves Lines 4, 10 and 11. The land left over after building the depot is zoned for residential and commercial use. [26] [27]

Bidding

Civil Work
PackageSectionLengthSuccessful bid/costContractorAward
CA-08Wadala – Amar Mahal Junction6.29 km (3.91 mi)540.00 crore (US$64 million)Reliance – Astaldi JV03 Mar 2018
CA-09Amar Mahal Junction – Surya Nagar6.41 km (3.98 mi)538.03 crore (US$64 million)TPL – CHEC JV03 Mar 2018
CA-10Surya Nagar – Sonapur6.68 km (4.15 mi)513.00 crore (US$61 million)Reliance – Astaldi JV03 Mar 2018
CA-11Sonapur – Majiwada6.10 km (3.79 mi)510.22 crore (US$60 million)TPL – CHEC JV03 Mar 2018
CA-12Majiwada – Kasarvadavali6.84 km (4.25 mi)531.00 crore (US$63 million)Reliance – Astaldi JV03 Mar 2018
CA-54Kasarvadavali – Gaimukh2.88 km (1.79 mi)342.00 crore (US$40 million)J Kumar13 Sept 2019
Total35.20 km (21.87 mi)2,974.25 crore (US$350 million)
Architectural Finishing Works
PackageSectionSuccessful bid/costContractorAward
CA-194Majiwada – Mulund Fire Station245.64 crore (US$29 million)Eagle Infra08 Feb 2024
CA-222Surya Nagar – Garodia Nagar251.02 crore (US$30 million)Godrej and Boyce29 Feb 2024
CA-243Hiranandani Estate – KapurbawdiBidding Underway
CA-257Gaimukh – Vijay GardenBidding Underway
Total496.66 crore (US$59 million)
Miscellaneous
PackageContractSuccessful bid/costContractorAward
CA-160Moghapada Depot Construction905.77 crore (US$110 million)SEW – VSE26 Sept 2023
CA-161Track Work for Mulund Fire Station – Gaimukh121.55 crore (US$14 million)Apurvakriti Infra26 Sept 2023
CA-168Track Work for Bhakti Park – Mulund Fire StationTo Be ConfirmedLarsen & ToubroTo Be Confirmed
CA-234Rolling Stock, Platform Screen Door & Signaling ContractTo Be ConfirmedLarsen & Toubro – AlstomTo Be Confirmed
CA-236Power Supply & Traction, E&M, Lifts & EscalatorsTo Be ConfirmedIRCON – JaksonTo Be Confirmed
Total1,027.32 crore (US$120 million)
Total Cost4,471.23 crore (US$530 million)

Construction

A construction barricade along the Line 4 route DreamLine Mumbai Metro 4.jpg
A construction barricade along the Line 4 route

The MMRDA invited bids for civil work on the corridor on 4 January 2017. [28] [29] [30] The tenders for construction of viaducts and stations were divided into five packages - Wadala to Amar Mahal Junction, Garodia Nagar to Surya Nagar, Gandhi Nagar to Sonapur, Mulund Fire Station to Majiwada and Kapurbawdi to Kasarvadavali. [31] [32] Metro 4 was tendered alongside Metro 2B. L&T, Afcons Infrastructure, Tata, NCC and JMC, Reliance Infrastructure-RdE, JKumar Group, ITD Cementation, CHEC-TPL bid for packages on both Metro 2B and Metro 4. A total of 10 firms and/or consortia submitted bids for the two lines, two of whom (Simplex Infrastructure and a consortium of GHEC-RCC-JV-China) bid exclusively for Metro 2B packages. [33] [34]

The construction work was awarded through the engineering, procurement and construction (EPC) model in April 2018. A joint venture between Reliance Infrastructure and Italian firm Astaldi S.p.A. was awarded three packages between Kasarwadavali and Wadala worth 1,584 crore (US$190 million). [35] The contract for the remaining two packages, worth a combined 1,048 crore (US$120 million), was awarded to a joint venture between Tata Projects Limited and China Harbour Engineering Company. [36] The civil work was expected to be completed in 30 months. [37] Construction began in October 2018. [38] About 80% of soil-investigation works and 66% of utility works had been completed by 3 June 2019. [39]

In September 2019, the MMRDA awarded a 342 crore (US$40 million) contract to J Kumar Infraprojects to build the viaduct and two stations for the Metro 4A extension from Kasarvadavli to Gaimukh. [40] [41] In August 2020, the Bombay High Court granted the MMRDA permission to carry out construction in a mangrove buffer zone. [42] Survey work on the land for a depot at Mogharpada began in January 2022. [43]

The MMRDA stated that 37% of total work on Lines 4 and 4A had been completed by June 2022. The agency stated that 43.44% of viaducts and 25.20% of work on stations on Line 4 had been completed. On Line 4A, 39.03% of viaducts and 19.82% of work on stations was completed. [44] By November 2022, 41% of civil works on Line 4 and 45% of work on Line 4A had been completed. [45] [46]

The Bombay High Court dismissed two petitions filed by Indo Nippon Chemical Co. Ltd. and Shree Yashwant Co-operative Housing Society Ltd. challenging the alignment for Line 4 in March 2023. [47] In September 2023, the MMRDA awarded a 905 crore (US$110 million) contract to a joint venture between SEW Infrastructure and Vishwa Samudra Engineering to build the depot at Mogharpada. It also awarded a 121 crore (US$14 million) to Apurvakriti Infrastructure Pvt Ltd. lay ballastless railway tracks connecting Mulund Fire Station with Gaimukh and the depot. [48]

Green Line 4

On 12 April 2023, MMRDA in press release stated that Green Line 4 project status is 49%. [49]

Status as on 10.02.2025 [50]

Sr. No.Activity% Progress
1PIER (Viaduct+Station upto PL)94% completed.
2PIERCAP EREC93% completed.
3U GIRDER EREC88% completed.
4I GIRD EREC65% completed.
5DECK SLAB59% completed.
6L GIRD EREC61% completed.
7T GIRD EREC68% completed.
8RCC BEAM EREC38% completed.
9PORTAL BEAM EREC16% completed.
10PI GIRDER ERECTION0% completed.

Green Line 4A

On 30 December 2022, MMRDA in press release stated that Green Line 4A project status is 45%. [51]

Stations

32 stations are being planned on Line 4. Most of them were either in the stage of planning or under early stages of construction (as of November 2018) [52]

2 stations are being planned on Line 4A. Connected to word Gaimukh to Kasarvadavali also connect Metro 10.

Green Line 4
#Station NameOpening [53] ConnectionsLayout
English Marathi
Line 4A
1 Gaimukh गायमुखDecember 2025 Line 10 (Planned)Elevated
2 Gowniwada गोवनीवाडाDecember 2025NoneElevated
Line 4
3 Kasarvadavali कासारवडवलीDecember 2025NoneElevated
4 Vijay Gardens विजय गार्डनDecember 2025NoneElevated
5 Hiranandani Estate हीरानंदानी एस्टेटDecember 2025 Thane Metro (Proposed)Elevated
6 Stretford Avenue स्ट्रेटफर्ड ॲव्हेन्यूDecember 2025NoneElevated
7 Manpada (Thane)मानपाडाDecember 2025NoneElevated
8 Kapurbawdi कापूरबावडीDecember 2025 Line 5 (Under Construction)Elevated
9 Majiwada माजिवाडाDecember 2025NoneElevated
10 Cadbury Junction कॅडबरी जंक्शनDecember 2025NoneElevated
11 Mahapalika Marg महापालिका मार्गDecember 2026NoneElevated
12 Thane RTO आरटीओ ठाणेDecember 2026NoneElevated
13 Teen Haath Naka, Thane तीन हात नाका (ठाणे)December 2026 Thane Metro (Proposed)Elevated
14 Mulund Naka मुलुंड नाकाDecember 2026NoneElevated
15 Mulund Fire Station मुलुंड अग्निशमन केंद्रDecember 2026NoneElevated
16 Sonapur सोनापूरDecember 2026NoneElevated
17 Shangrila शांग्रीलाDecember 2026NoneElevated
18 Bhandup भांडुपDecember 2026NoneElevated
19 Bhandup Mahapalika भांडुप महापालिकाDecember 2026NoneElevated
20 Naval Housing नौदल गृहनिर्माणDecember 2026NoneElevated
21 Gandhi Nagar (Kanjurmarg) गांधी नगर (कांजूरमार्ग)December 2026 Line 6 (Under Construction)Elevated
22 Surya Nagar सूर्य नगरNovember 2027NoneElevated
23 Vikhroli विक्रोळीNovember 2027NoneElevated
24 Godrej Company गोदरेज कंपनीNovember 2027NoneElevated
25 Shreyas Cinema श्रेयस सिनेमाNovember 2027NoneElevated
26 Laxmi Nagar (Ghatkopar) लक्ष्मी नगर (घाटकोपर)November 2027NoneElevated
27 Pant Nagar पंत नगरNovember 2027NoneElevated
28 Garodia Nagar गरोडिया नगरNovember 2027NoneElevated
29 Amar Mahal Junction अमर महाल जंक्शनNovember 2027NoneElevated
30 Siddharth Colony सिध्दार्थ कॉलनीNovember 2027 Line 2 (Under Construction)Elevated
31 Suman Nagar सुमन नगरNovember 2027NoneElevated
32 Anik Nagar Bus Depot अणिक नगर बस आगारNovember 2027NoneElevated
33 Wadala Truck Terminal वडाळा ट्रक टर्मिनलNovember 2027NoneElevated
34 Bhakti Park (Wadala) भक्ति पार्क (वडाळा)November 2027 Line 1 (Mumbai Monorail)
Line 11 (Planned)
Elevated


Cost

Line 4 is estimated to cost 14,549 crore (US$1.7 billion), [54] and Line 4A is estimated to cost 949 crore (US$110 million). [18] The Maharashtra Government signed an 545 million (₹4,000 crore) loan agreement with German development bank KfW to fund construction of Metro 4 and 4A in November 2020. [55]

Infrastructure

Rolling stock

The MMRDA awarded a 1,854 crore (US$220 million) contract to Alstom to supply 234 metro coaches for Line 4 and 4A in March 2021. [56] This was Alstom's first order after acquiring Bombardier Transportation in January 2021. [57] [58] However, the company initially cancelled the order in March 2022, citing delays in completing the project. [59] In February 2025, Larsen & Toubro (L&T), in collaboration with Alstom, has been awarded a significant contract to supply critical systems for the line. This contract encompasses the provision of 39 six-coach trains, Communication-Based Train Control (CBTC) signaling and train control systems, telecommunications, platform screen doors, and depot machinery and plant for the Mogharpada Depot. [60]

Depot

The depot for the line is located at Mogharpada in Thane. It will also serve as the depot for Line 10 and Line 11. The depot has a maximum capacity for 64 stabling lines, half of which are reserved for future use, in addition to 10 inspection bays lines and 10 workshop lines. The depot also houses the operational control centre, administrative building, maintenance and workshop building, auxiliary substation, and staff quarters. [48]

Pocket track

The Bhakti Park station will have a pocket track to enable trains to park off the main line. Line 4's depot at Mogharpada also serves Line 10 and Line 11 which creates the possibility of trains having to run without passengers from the depot to Chhatrapati Shivaji Terminus during morning hours. The pocket track enables trains to park off the main line without traveling to the last station on the line. [61]

References

  1. "Mumbai Metro 4A". Archived from the original on 26 November 2018. Retrieved 26 November 2018.
  2. "Mumbai: Metro Lines 2A & 7 likely to be fully opened on August 15 | Mumbai News - Times of India".
  3. "Mumbai Metro Line 4". www.mmrda.maharashtra.gov.in. MMRDA official website. Archived from the original on 1 August 2018. Retrieved 15 November 2018.
  4. "Everything you need to know about Metro 2B and Metro 4 | Free Press Journal". Free Press Journal. Archived from the original on 12 February 2017. Retrieved 12 February 2017.
  5. "Alstom terminates Mumbai Line 4 fleet contract". 10 March 2022. Retrieved 6 April 2022.
  6. "Alstom cancels order bagged from MMRDA for supply of coaches for Mumbai Metro 4". 4 March 2022. Retrieved 6 April 2022.
  7. "Over 130 km of Metro lines to criss-cross city by 2020". The Indian Express. 16 June 2015. Retrieved 9 July 2023.
  8. "Maharashtra Cabinet Gives Go-Ahead For Two Metro Lines". NDTV.com. Archived from the original on 18 October 2016. Retrieved 14 October 2016.
  9. "Mumbai to get two more Metro Rails". Business Standard India. 27 September 2016. Archived from the original on 18 October 2016. Retrieved 14 October 2016.
  10. "MMRDA invites civil work bids for two Metro projects". The Times of India. Archived from the original on 12 February 2017. Retrieved 10 February 2017.
  11. "Wadala-Thane metro line clears CRZ hurdle - Mumbai Mirror -". Mumbai Mirror. Archived from the original on 28 February 2017. Retrieved 27 February 2017.
  12. "Mumbai: MMRDA to acquire private land in Thane for Metro 4 car shed". The Indian Express. 11 November 2018. Retrieved 10 July 2023.
  13. "MMRDA plans drone survey for other Metro lines". The Indian Express. 7 March 2017. Archived from the original on 7 March 2017. Retrieved 7 March 2017.
  14. "Mumbai Metro Phase 4 may cover entire Ghodbunder Road stretch in Thane". Hindustan Times. 2 February 2017. Retrieved 10 July 2023.
  15. "MMRDA plans to extend Metro-IV route from Wadala to GPO". The Times of India. Archived from the original on 16 March 2017. Retrieved 17 March 2017.
  16. "Mumbai Metro's Thane-Wadala line likely to be extended to CST/GPO | Latest News & Updates at Daily News & Analysis". dna. 16 March 2017. Archived from the original on 17 March 2017. Retrieved 17 March 2017.
  17. "Mumbai Metro 4 will now reach Thane's Ghodbunder Road". Hindustan Times. 12 January 2018. Retrieved 10 July 2023.
  18. 1 2 "Kasarvadavali-Gaikmukh metro project in Thane approved". Mumbai Mirror. 27 December 2018. Retrieved 10 July 2023.
  19. "MMRDA's Executive Committee Meeting held today Contractors, consultants appointed for MTHL, Metro-4, Wadala Truck Terminal and flyover on NH-4". MMRDA. 9 November 2017. Retrieved 10 July 2023.
  20. Berger, Louis. "Louis Berger awarded Mumbai Metro Line 4 contract in India". GlobeNewswire News Room. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  21. "DB Engineering-Louis Berger bags contract for Mumbai Metro 4". dna. 10 April 2018. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  22. "Metro-4, 9 to be built along with flyovers". The Asian Age. 1 October 2018. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  23. "Mumbai: MMRDA to build Metro 4 & 9 corridors along with flyovers". Free Press Journal. 4 October 2018. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  24. Naik, Yogesh (21 May 2019). "MMRDA redrafts plans for better connectivity between Mumbai Metro corridors". Mumbai Mirror. Archived from the original on 6 June 2019. Retrieved 6 June 2019.
  25. "Mumbai: MMRDA to acquire private land in Thane for Metro 4 car shed". The Indian Express. 11 November 2018. Retrieved 10 July 2023.
  26. "Integrated Metro car shed on 435 acres at Thane for Metro Line 4, 4A, 10 & 11". The Times of India. 16 October 2023. ISSN   0971-8257 . Retrieved 4 November 2023.
  27. "One car shed for 4 Metro lines to come up in Thane". The Times of India. 17 October 2023. ISSN   0971-8257 . Retrieved 4 November 2023.
  28. "MMRDA invites bids for 2 metro projects". dna. 5 January 2017. Archived from the original on 8 January 2017. Retrieved 10 February 2017.
  29. "MMRDA invites tenders for design, construction of stations, viaducts for new Metro routes". The Indian Express. 5 January 2017. Archived from the original on 11 February 2017. Retrieved 10 February 2017.
  30. "Racing against 2021 deadline, Maharashtra opens bids for two more Metro lines". Hindustan Times. 5 January 2017. Archived from the original on 11 February 2017. Retrieved 10 February 2017.
  31. Correspondent, Special. "MMRDA invites tenders for Metro-2B and 4". The Hindu. Archived from the original on 6 January 2017. Retrieved 12 February 2017.{{cite web}}: |last1= has generic name (help)
  32. "Mumbai commute to get faster, firms queue up to build two more Metro lines". Hindustan Times. 13 May 2017. Archived from the original on 14 May 2017. Retrieved 13 May 2017.
  33. "MMRDA receives interest from domestic, foreign firms for metro". India Today. Archived from the original on 14 June 2017. Retrieved 13 May 2017.
  34. "R Infra, 10 others bid for Metro-2B, Metro-4 corridors". Asian Age. 13 May 2017. Archived from the original on 24 May 2017. Retrieved 13 May 2017.
  35. "Reliance Infra bags three packages of Mumbai Metro Line 4". The Economic Times. 13 April 2018. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  36. "Tata Projects bag Rs 1,048 crore Mumbai Metro packages". The Economic Times. 13 April 2018. Archived from the original on 9 October 2018. Retrieved 9 October 2018.
  37. Pillay, Amritha (14 April 2018). "Reliance Infrastructure, Tata Projects win bids for Mumbai Metro project". Business Standard India. Archived from the original on 9 August 2018. Retrieved 9 August 2018.
  38. "Metro Lines 4, 5 connecting Thane to different cities to be completed only by 2025, says MMRDA official". Hindustan Times. 3 June 2022. Retrieved 10 July 2023.
  39. "Metro lines 4 and 5 to be linked at station in Thane". Hindustan Times. 17 June 2019. Retrieved 10 July 2023.
  40. "Contractor for Metro 4A named". The Times of India. 10 September 2019. ISSN   0971-8257 . Retrieved 10 July 2023.
  41. "Mumbai Metro 4A bags civil contracts". Archived from the original on 13 October 2019. Retrieved 30 November 2020.
  42. "High Court gives nod for Metro Line 4 in Mumbai's mangrove buffer zone". Business Standard. Retrieved 10 July 2023.
  43. "Hurdles for Wadala to Thane Metro Line 4 cleared; survey of car shed land begins". Hindustan Times. 28 January 2022. Retrieved 10 July 2023.
  44. "Four years on, Mumbai-Thane Metro Line 4 still only 37% complete". Free Press Journal. Retrieved 10 July 2023.
  45. "Mumbai: Here is latest update of more than dozen Metro projects in the city". Free Press Journal. Retrieved 10 July 2023.
  46. "State of the Mumbai Metro: 14 lines in the works, two nearing completion". The Indian Express. 4 November 2022. Retrieved 10 July 2023.
  47. "Mumbai: Bombay HC dismisses plea challenging Metro Line 4". Free Press Journal. Retrieved 4 November 2023.
  48. 1 2 "Mum-Thane Metro depot construction: Contractor appointed". The Times of India. 27 September 2023. ISSN   0971-8257 . Retrieved 4 November 2023.
  49. "Metro line 4 achieves 49% Physical Work Completion". 12 April 2023. Retrieved 14 May 2023.
  50. "Metro Line - 4 | Mumbai Metropolitan Region Development Authority". mmrda.maharashtra.gov.in. Archived from the original on 15 January 2025. Retrieved 22 February 2025.
  51. "MMRDA Press Release 30th December 2022" (in Marathi). 30 December 2022. Retrieved 20 April 2023.
  52. "Mumbai Metro 4 – Wadala–Ghatkopar-Mulund–Teen Hath Naka–Kasarvadavali Station". Archived from the original on 5 October 2017. Retrieved 7 June 2017.
  53. "Mumbai Metro on fast track to hit 2025 completion goal". Mid-day. 5 April 2025. Retrieved 11 April 2025.
  54. "Non-confirmation of depot land: Fate of 3 new Mumbai Metro lines hangs in balance". The Indian Express. 8 February 2023. Retrieved 10 July 2023.
  55. "German bank extends credit line for 2 lines of Mumbai Metro". The Indian Express. 7 November 2020. Retrieved 10 July 2023.
  56. "Alstom to make 39 rakes for Metro 4, 4A for Rs 2k cr in Mumbai". The Times of India. 31 March 2021. ISSN   0971-8257 . Retrieved 10 July 2023.
  57. "Alstom wins €220-million contract to manufacture 234 metro cars for Mumbai Metro Lines 4, 4A". www.thehindubusinessline.com. 30 March 2021. Retrieved 10 July 2023.
  58. "Mumbai Metro-4 coaches: Bombardier lowest bidder, Chinese manufacturer 'non-responsive'". Hindustan Times. 19 January 2021. Retrieved 10 July 2023.
  59. "Alstom cancels order bagged from MMRDA for supply of coaches for Mumbai Metro 4". Moneycontrol. 4 March 2022. Retrieved 10 July 2023.
  60. "L&T, in partnership with Alstom, has secured Mumbai Metro Line 4's rolling stock and signaling contract. T". 16 February 2025. Retrieved 25 February 2025.
  61. "MMRDA to construct pocket track at Mumbai's Bhakti Park Metro Line 4 station". The Indian Express. 17 March 2023. Retrieved 4 November 2023.