Jakarta MRT Phase 2A tunnel work finished at Mangga Besar

Jakarta (ANTARA) - Excavation of the Jakarta Mass Rapid Transit Phase 2A tunnel was completed after tunnel boring machine 2 broke through the B2-level wall at Mangga Besar Station, project officials said Wednesday.

"We appreciate the hard work of all parties who succeeded in building the two Phase 2A north-south line tunnels with good results," said PT MRT Jakarta Construction Director Weni Maulina.

The southbound tunnel, constructed under contract package CP202 by TBM 2 in two stages between July 2025 and July 2026, will serve train services heading toward Lebak Bulus Bank Syariah Indonesia (BSI) Station.

Construction of the northbound tunnel toward Kota Station concluded earlier in July 2026.

Terminating at Mangga Besar Station's B4 level—approximately 28 meters underground—it forms the deepest railway tunnel in Indonesia.

The completed tunnels form part of MRT Jakarta Phase 2A, which extends the north-south rapid transit line from the Hotel Indonesia (HI) Roundabout area to Kota Tua.

MRT Jakarta aims to open Segment 1 between HI Roundabout and Monas by late 2027, followed by Segment 2 through to Kota by the end of 2029.

Translator: Luthfia, Kenzu
Editor: Aditya Eko Sigit Wicaksono
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