Kolkata Metro Line 3 (Purple Line — Approved Extensions: Eden Gardens & IIM-Joka ↔ Diamond Park)
Kolkata Metro Line 3 (Purple Line - Approved Extensions Segment) encompasses 4.99 km of sanctioned main-line extensions across 3 stations: the northern underground extension from Esplanade to Eden Gardens (1.60 km), and the southern elevated extension from Joka to IIM-Joka (1.70 km) and Diamond Park (1.69 km). These extensions will link the IIM Calcutta campus in the south directly to Strand Road, Calcutta High Court, and Eden Gardens stadium in the north.
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Kolkata Metro Purple Line Economics
Expected Completion Date
Kolkata Metro Purple Line Stations
| # | Station | Type | Interchange / Connection | Opened |
|---|---|---|---|---|
| 01 | Eden Gardens | Underground Northern Extension (Approved) | Eden Gardens Stadium, Strand Road & Calcutta High Court Axis | Approved (₹1,000 Cr Sanction) |
| 02 | IIM-Joka | Elevated Southern Extension (Approved) | IIM Calcutta Campus Main Gate Axis | Approved (₹294 Cr Sanction) |
| 03 | Diamond Park | Elevated Southern Terminal (Approved) | Diamond Park Suburb & DH Road Node | Approved |
Eden Gardens (North) & IIM-Joka to Diamond Park (South) Approved Extensions Map
Kolkata Metro Purple Line Technical Specifications
| Parameter | Value |
|---|---|
| Corridor Status | Approved Extensions |
| Line Number | Line 3 (Purple Line Extensions) |
| Total Length | 4.99 km Combined Approved Extensions (1.60 km North / 3.39 km South) |
| Stations Count | 3 Sanctioned Stations (1 Underground, 2 Elevated) |
| Corridor Type | Underground Tunnel (Eden Gardens) & Elevated Viaduct (IIM-Joka to Diamond Park) |
| Operator | Metro Railway, Kolkata (Owner: Indian Railways / RVNL) |
| Opened / Est. Opening | TBD |
| Maximum Design Speed | 80 km/h |
| Track Gauge | Broad Gauge (1,676 mm / 5 ft 6 in) |
| Electrification System | 750V DC Third Rail |
| Primary Depot | Joka Metro Depot |
Kolkata Metro Purple Line Timeline
Joka to IIM-Joka and Diamond Park 3.39 km southern extension sanctioned at ₹294.49 Cr in Union Budget.
Metro Railway authorities revised northern terminal from Esplanade to Eden Gardens to serve Strand Road and Calcutta High Court.
Ministry of Railways officially sanctioned ₹1,000 Cr for 1.60 km Esplanade to Eden Gardens extension.
Purple Line Extensions & Educational / Legal Hub Impact
Economic Significance
Directly connects the premier IIM Calcutta campus in South Kolkata to the Calcutta High Court and Eden Gardens in Central Kolkata.
Traffic Impact
Reduces road congestion on Strand Road, BBD Bagh arterial roads, and Diamond Harbour Road.
Employment Centres Served
Serves legal professionals, students, faculty, sports fans, and suburban South 24 Parganas commuters.
Intermodal Connectivity
Provides seamless single-seat broad gauge transit spanning from Diamond Park into the heart of Kolkata's administrative core.
Impact on Real Estate
Boosted land values and residential development projects around Diamond Park and Joka.
Kolkata Metro Purple Line Alignment Map & GIS Explorer
Frequently Asked Questions
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