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30METRO RAIL NEWS -MAY - 2025 www.metrorailnews.in 1Portal Pier (Up to PL)100% Completed2Pier Cap Erection100% Completed3Portal Beam Casting at PL (Cast in Situ)100% Completed4Tie Beam100% Completed5U-Girder Erection100% Completed6Casting of Extended Pier100% Completed7Pi-Girder Casting23% Completed8Precast Portal Beam Casting @CL17% CompletedElevated Ramp 1Elevated Ramp80% CompletedTunnel1Tunnel Ring Segment Casting99% Completed2Main Tunnel3TBM-1 (Down Line)92% Completed4TBM-2 (Up Line)87% CompletedUG CSMIA Station1Base Slab (Sqm)54% Completed2BS to CS wall (Sqm)33% Completed3Column 1st Lift (BS to CS)39% Completed4Column 2nd Lift (BS to CS)33% Completed5Concourse Slab20% Completed6CS to RS Wall15% Completed7Column (CS to RS)19% Completed8Roof slab7% CompletedLatest Development on Mumbai Metro Line 7A In April 2025, J Kumar Infraprojects (JKIL)%u2019s TBM Disha achieved a tunnel breakthrough at Airport Colony Station of Line 7A under package CA-48. In 2019, J Kumar Infraprojects secured Package CA-48 at Rs. 1,998 crore from the Mumbai Metropolitan Region Development Authority (MMRDA). Line 8 ( Gold Line )%u2022 Line 8 of the Mumbai Metro is currently under implementation. The Line 8 has been proposed between Chhatrapati Shivaji Maharaj International Airport (CSMIA) and Navi Mumbai International Airport (NMIA) through a 35 km long metro corridor. %u2022 The Mumbai Metro Line 8 Project will be implemented under the public-private partnership (PPP) model, and is estimated to cost Rs 15,000 crore.Recent Update In January 2025, the Maharashtra Government approved the construction of Mumbai Metro Line 8. CIDCO, along with the agency developing the NMIA, has been assigned the task of preparing a Detailed Project Report (DPR) for Mumbai Metro Line 8.Line 9 ( Red Line ) %u2022 The under-construction Line 9 is the extension of Line 7 (Red Line ). The Line 9 spans 11.38 km between Dahisar East and Mira Bhayandar through 7 stations. FEATURED METRO SYSTEM