Science & Tech · Big Tech & Internet · 1 hr ago
MRT Jakarta Completes Both Phase 2A Tunnels at Mangga Besar
MRT Jakarta has completed both Phase 2A tunnels at Mangga Besar Station in Jakarta, Indonesia.
The southbound tunnel was finished when a tunnel boring machine broke through a station wall on November 11, 2026; the northbound tunnel had been completed in July.
The tunnels will carry trains in both directions, with the southbound route heading toward Lebak Bulus BSI Station and the northbound route toward Kota Station.
Phase 2A extends the north-south line from the Hotel Indonesia Roundabout area toward Kota Tua.
The tunnels end about 28 metres underground at Mangga Besar, making them Indonesia's deepest railway tunnel.
The first segment is targeted to open by late 2027, from the Hotel Indonesia Roundabout to Monas, with the extension through to Kota planned by the end of 2029.
MRT Jakarta has completed excavation of both Phase 2A tunnels at Mangga Besar Station.
The southbound tunnel was completed when tunnel boring machine 2 broke through the station’s B2-level wall on November 11, 2026.
The northbound tunnel toward Kota Station was completed earlier, in July 2026.
The southbound tunnel will carry trains toward Lebak Bulus Bank Syariah Indonesia Station.
MRT Jakarta aims to open the segment from the Hotel Indonesia Roundabout to Monas by late 2027 and the extension to Kota by the end of 2029.
- Who
- MRT Jakarta and the project teams; PT MRT Jakarta Construction Director Weni Maulina commented on the work.
- What
- Excavation of both Phase 2A tunnels at Mangga Besar Station was completed.
- When
- The southbound tunnel breakthrough was reported on November 11, 2026; the northbound tunnel was completed in July 2026.
- Where
- Mangga Besar Station in Jakarta, Indonesia.
- Why
- The tunnels form part of Phase 2A, which extends the north-south MRT line from the Hotel Indonesia Roundabout area to Kota Tua.
This story does not have two clearly opposing sides.
TBM 2 constructed the southbound tunnel in two stages.
Construction of the northbound tunnel toward Kota Station concluded.
TBM 2 broke through the B2-level wall at Mangga Besar Station, completing excavation of the southbound tunnel.
- Tunnel count
- Two Phase 2A north-south line tunnels completed
- Southbound tunnel contract
- CP202
- Southbound tunnel destination
- Lebak Bulus Bank Syariah Indonesia (BSI) Station
- Deepest level
- Mangga Besar Station’s B4 level, approximately 28 meters underground
- Segment 1 target
- Hotel Indonesia Roundabout to Monas by late 2027
- Segment 2 target
- Through to Kota by the end of 2029
What people are saying
We appreciate the hard work of all parties who succeeded in building the two Phase 2A north-south line tunnels with good results