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Green Line (Mumbai Metro)

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Green Line
Overview
Status
  • Line 4 (under construction)
  • Line 4A (under construction)
  • Line 10(proposed)
  • Line 11(proposed)[1]
OwnerMMRDA
LocaleMumbai and Thane, Maharashtra, India
Termini
Stations38 (Main Line) 16 (Branch Line)
WebsiteLine 4
Service
TypeRapid Transit
SystemMumbai Metro
Operator(s)MMRDA
Depot(s)Mogharpada
Rolling stockAlstom
History
Planned openingDecember 2025; 6 months' time (2025-12)[2]
Technical
Number of tracks2
CharacterElevated & Underground
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Operating speed90 km/h (56 mph)
Highest elevation3.90 m (12.8 ft)

The Green Line is part of Mumbai Metro rail network for the city of Mumbai, Maharashtra, India. During the construction the line was divided into 3 smaller lines - Line 4 (Kasarvadavali to Bhakti Park (Wadala)), Line 4A (Kasarvadavali to Gaimukh), and Line 10(Gaimukh to Shivaji Chowk (Mira Road)). The line also has a proposed spur line called Line 11 from Anik Nagar Bus Depot to SPM Circle. The line proposed to be of length 60.409km of which 35.2km is under construction. The line connects the regions of Mira Bhayandar to Wadala via Gaimukh and Kasarvadavali. Construction of Line 4 started in October 2018 while the construction of Line 4A started in September 2019. Meanwhile, the proposed Line 10 is currently under environmental review while Line 11 is undergoing Soil testing. The line has a total of elevated 38 stations of which 34 are under construction. The main line is fully elevated and has zero underground stations. In addition, the proposed spur line (Line 11) has16 stations of which 2 are elevated and the remaining 14 are proposed to be underground.

The line offers interchange with the under construction Orange Line at Kapurbawdi, Pink Line at Gandhi Nagar (Kanjurmarg), and the Yellow Line at Siddharth Colony. In addition the line has a proposed interchange with the Red Line at Shivaji Chowk (Mira Road) and Aqua Line at Chhatrapati Shivaji Maharaj Terminus.

Planning

[edit]
Green Line
Line Number Station Opening Distance
English Marathi
4 Kasarvadavali Cadbury Junction December 2025 32.32 km (20.08 mi)
Cadbury Junction Gandhi Nagar (Kanjurmarg) December 2026
Gandhi Nagar (Kanjurmarg) Bhakti Park (Wadala) November 2027
4A Kasarvadavali Gaimukh December 2025 2.88 km (1.79 mi)
10 Gaimukh Shivaji Chowk (Mira Road) Proposed 9.209 km (5.722 mi)
11 Anik Nagar Bus Depot SPM Circle Proposed 16 km (9.9 mi)
Total 60.409 km (37.536 mi)

Line 4

[edit]

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).[3] Line 4 was approved in June 2016,[4] and was estimated to cost ₹14,549 crore (US$1.7 billion).[5]

The foundation stone for Metro 4 was laid by Prime Minister Narendra Modi on 24 December 2016.[6] 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.[7] The agency stated that the line would require two depots due to its length.[8]

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.[9]

The MMRDA appointed Systra MVA Consulting India Pvt. Ltd. as the detail design consultants for Line 4 on 9 November 2017.[10] 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.[11][12] 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.[13][14]

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.[15]

Line 4A

[edit]

In February 2017, the MMRDA said it was studying the feasibility of extending the corridor from Kasarvadavali to Gaimukh.[16] 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.[17][18] 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).[19][20]

Line 10

[edit]

In June 2015, the MMRDA announced Metro Master Plan covering over 300 km of metro lines to decongest roads and reduce pressure on the suburban railway system. As part of the master plan it announced a brand new line named Line 10, which would serve as an of the announced Line 4. The line would start in Gaimukh and terminate in Shivaji Chowk (Mira Road) where it would intersect with the Red Line. The line is proposed to add 4 brand new stations, all of which are proposed to be elevated despite the line having some underground sections.MMRDA later stated that the Line 4, 4A, and Line 10 would form the Green Line. In December 2022 MMRDA appointed SYSTRA MVA Consulting – DB Engineering & Consulting JV as the General Consultant responsible for the execution of the line. The line is currently awaiting environmental clearance for construction as it passes through the Sanjay Gandhi National Park.

Line 11

[edit]

Initially the Line 11 was announced as an extension from the Line 4 to the Chhatrapati Shivaji Maharaj Terminus. The line initially proposed having 2 elevated stations and 8 underground sections running from Wadala to the CSMT. The Maharashtra government assigned the MMRDA to execute this project. However, in early the project was transferred from the MMRDA to the MMRCL.[21] This change in agency saw the line being reworked completely. MMRCL announced the line had a new alignment taking a more central route south of Byculla. The reworks saw the line being covnerted to that of a spur line rather then a natural extension of the Green Line. It also saw the addition of new stations and the extension of the line beyond CSMT. The line construction estimates were also doubled from Rs.8,739 crore to Rs.16,000 crore.[22][23]

In May 2025 as part of the Dharavi redevelopment project it was proposed extending the spur Line 11 from Anik Nagar Bus Depot to Dharavi via Sion. This proposal was part of the Dharavi redevelopement project, which included the efforts to make Dharavi a transportation hub in Mumbai.[24]

Depot

[edit]

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]

Construction

[edit]

Tendering

[edit]
Civil Work
Package Section Length Successful bid/cost Contractor Award
CA-08 Wadala – Amar Mahal Junction 6.29 km (3.91 mi) ₹540.00 crore (US$64 million) Reliance – Astaldi JV 03 Mar 2018
CA-09 Amar Mahal Junction – Surya Nagar 6.41 km (3.98 mi) ₹538.03 crore (US$64 million) TPL – CHEC JV 03 Mar 2018
CA-10 Surya Nagar – Sonapur 6.68 km (4.15 mi) ₹513.00 crore (US$61 million) Reliance – Astaldi JV 03 Mar 2018
CA-11 Sonapur – Majiwada 6.10 km (3.79 mi) ₹510.22 crore (US$60 million) TPL – CHEC JV 03 Mar 2018
CA-12 Majiwada – Kasarvadavali 6.84 km (4.25 mi) ₹531.00 crore (US$63 million) Reliance – Astaldi JV 03 Mar 2018
CA-54 Kasarvadavali – Gaimukh 2.88 km (1.79 mi) ₹342.00 crore (US$40 million) J Kumar 13 Sept 2019
Total 35.20 km (21.87 mi) ₹2,974.25 crore (US$350 million)
Architectural Finishing Works
Package Section Successful bid/cost Contractor Award
CA-194 Majiwada – Mulund Fire Station ₹245.64 crore (US$29 million) Eagle Infra 08 Feb 2024
CA-222 Surya Nagar – Garodia Nagar ₹251.02 crore (US$30 million) Godrej and Boyce 29 Feb 2024
CA-243 Hiranandani Estate – Kapurbawdi Bidding Underway
CA-257 Gaimukh – Vijay Garden Bidding Underway
Total ₹496.66 crore (US$59 million)
Miscellaneous
Package Contract Successful bid/cost Contractor Award
CA-160 Moghapada Depot Construction ₹905.77 crore (US$110 million) SEW – VSE 26 Sept 2023
CA-161 Track Work for Mulund Fire Station – Gaimukh ₹121.55 crore (US$14 million) Apurvakriti Infra 26 Sept 2023
CA-168 Track Work for Bhakti Park – Mulund Fire Station To Be Confirmed Larsen & Toubro To Be Confirmed
CA-234 Rolling Stock, Platform Screen Door & Signaling Contract To Be Confirmed Larsen & Toubro – Alstom To Be Confirmed
CA-236 Power Supply & Traction, E&M, Lifts & Escalators To Be Confirmed IRCON – Jakson To Be Confirmed
Total ₹1,027.32 crore (US$120 million)
Total Cost ₹4,471.23 crore (US$530 million)

Line 4 & Line 4A

[edit]
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.

Stations

[edit]

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) [48]

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

Green Line - Main Line
# Station Name Opening[49] Connections Layout
English Marathi
1 Shivaji Chowk (Mira Road) शिवाजी चौक (मिरा रोड) Approved Line 9 (Under Construction) Elevated
2 Kashimira काशिमिरा Approved None Elevated
3 Varsova Char Phata वर्सोवा चार फाटा Approved None Elevated
4 Gaimukh Reti Bandar गायमुख रेती बंदर Approved None Elevated
5 Gaimukh गायमुख December 2025 Line 10 (Planned) Elevated
6 Gowniwada गोवनीवाडा December 2025 None Elevated
7 Kasarvadavali कासारवडवली December 2025 None Elevated
8 Vijay Gardens विजय गार्डन December 2025 None Elevated
9 Hiranandani Estate हीरानंदानी एस्टेट December 2025 Thane Metro (Proposed) Elevated
10 Stretford Avenue स्ट्रेटफर्ड ॲव्हेन्यू December 2025 None Elevated
11 Manpada (Thane) मानपाडा December 2025 None Elevated
12 Kapurbawdi कापूरबावडी December 2025 Line 5 (Under Construction) Elevated
13 Majiwada माजिवाडा December 2025 None Elevated
14 Cadbury Junction कॅडबरी जंक्शन December 2025 None Elevated
15 Mahapalika Marg महापालिका मार्ग December 2026 None Elevated
16 Thane RTO आरटीओ ठाणे December 2026 None Elevated
17 Teen Haath Naka, Thane तीन हात नाका (ठाणे) December 2026 Thane Metro (Proposed) Elevated
18 Mulund Naka मुलुंड नाका December 2026 None Elevated
19 Mulund Fire Station मुलुंड अग्निशमन केंद्र December 2026 None Elevated
20 Sonapur सोनापूर December 2026 None Elevated
21 Shangrila शांग्रीला December 2026 None Elevated
22 Bhandup भांडुप December 2026 None Elevated
23 Bhandup Mahapalika भांडुप महापालिका December 2026 None Elevated
24 Naval Housing नौदल गृहनिर्माण December 2026 None Elevated
25 Gandhi Nagar (Kanjurmarg) गांधी नगर (कांजूरमार्ग) December 2026 Line 6 (Under Construction) Elevated
26 Surya Nagar सूर्य नगर November 2027 None Elevated
27 Vikhroli विक्रोळी November 2027 None Elevated
28 Godrej Company गोदरेज कंपनी November 2027 None Elevated
29 Shreyas Cinema श्रेयस सिनेमा November 2027 None Elevated
30 Laxmi Nagar (Ghatkopar) लक्ष्मी नगर (घाटकोपर) November 2027 None Elevated
31 Pant Nagar पंत नगर November 2027 None Elevated
32 Garodia Nagar गरोडिया नगर November 2027 None Elevated
33 Amar Mahal Junction अमर महाल जंक्शन November 2027 None Elevated
34 Siddharth Colony सिध्दार्थ कॉलनी November 2027 Line 2 (Under Construction) Elevated
35 Suman Nagar सुमन नगर November 2027 None Elevated
36 Anik Nagar Bus Depot अणिक नगर बस आगार November 2027 None Elevated
37 Wadala Truck Terminal वडाळा ट्रक टर्मिनल November 2027 None Elevated
38 Bhakti Park (Wadala) भक्ति पार्क (वडाळा) November 2027 Line 1 (Mumbai Monorail)
Line 11 (Planned)		 Elevated
Green Line - Branch Line
# Station Name Opening Connections Layout
English Marathi
1 Anik Nagar Bus Depot अणिक नगर बस आगार December 2025 None Elevated
2 Bhakti Park (Wadala) भक्ति पार्क (वडाळा) December 2025 None Elevated
3 CGS Colony सीजीएस कॉलनी Proposed None Underground
4 Ganesh Nagar गणेश नगर Proposed None Underground
5 BPT Hospital बीपीटी हॉस्पिटल Proposed None Underground
6 Sewri शिवडी Proposed None Underground
7 Hay Bunder गवत बंदर Proposed None Underground
8 Coal Bunder कोळसा बंदर Proposed None Underground
9 Reay Road रे रोड Proposed None Underground
10 Byculla भायखळा Proposed None Underground
11 Nagpada Junction नागपाडा जंक्शन Proposed None Underground
12 Bhendi Bazaar भेंडी बाजार Proposed None Underground
13 Crawford Market क्रॉफर्ड मार्केट Proposed None Underground
14 Chhatrapati Shivaji Maharaj Terminus छत्रपती शिवाजी महाराज टर्मिनस Proposed Line 3 (Under Construction) Underground
15 Horniman Circle हॉर्निमन सर्कल Proposed None Underground
16 SPM Circle एसपीएम सर्कल Proposed None Underground


Cost

[edit]

Line 4 is estimated to cost ₹14,549 crore (US$1.7 billion),[50] and Line 4A is estimated to cost ₹949 crore (US$110 million).[20] 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.[51]

Infrastructure

[edit]

Rolling stock

[edit]

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.[52] This was Alstom's first order after acquiring Bombardier Transportation in January 2021.[53][54] However, the company initially cancelled the order in March 2022, citing delays in completing the project.[55] 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.[56]

Depot

[edit]

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.[57]

Pocket track

[edit]

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.[58]

References

[edit]
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  49. ^ "Mumbai Metro on fast track to hit 2025 completion goal". Mid-day. 5 April 2025. Retrieved 11 April 2025.
  50. ^ "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.
  51. ^ "German bank extends credit line for 2 lines of Mumbai Metro". The Indian Express. 7 November 2020. Retrieved 10 July 2023.
  52. ^ "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.
  53. ^ "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.
  54. ^ "Mumbai Metro-4 coaches: Bombardier lowest bidder, Chinese manufacturer 'non-responsive'". Hindustan Times. 19 January 2021. Retrieved 10 July 2023.
  55. ^ "Alstom cancels order bagged from MMRDA for supply of coaches for Mumbai Metro 4". Moneycontrol. 4 March 2022. Retrieved 10 July 2023.
  56. ^ "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.
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  58. ^ "MMRDA to construct pocket track at Mumbai's Bhakti Park Metro Line 4 station". The Indian Express. 17 March 2023. Retrieved 4 November 2023.
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