Jakarta’s Subterranean Transformation: MRT Monas Station Nears Completion as Phase 2A Reaches 93% Milestone

JAKARTA – The face of Jakarta’s public transportation is undergoing a radical transformation as PT MRT Jakarta (Perseroda) enters the final stages of construction for the Phase 2A corridor. Connecting Bundaran HI to Monas, this project represents a critical leap in the capital’s ambition to build a world-class, integrated transit network. At the heart of this development is the CP201 construction package, which encompasses the highly anticipated Monas and Thamrin Stations.

Recent site inspections reveal that the Monas Station is no longer just a blueprint but a nearly realized architectural marvel. With a design language that echoes the sleek, functional aesthetics of Singapore’s Orchard Road stations, the facility is poised to become a new icon for the city. As of July 2024, the progress of CP201 has officially crossed the 92% mark, signaling that the late 2027 operational target is well within reach.

Main Facts: A Subterranean Landmark in the Heart of the Capital

The Monas MRT Station is designed to be more than just a transit hub; it is envisioned as a "cultural gateway." One of its most striking features is the "sunken entrance" concept. Unlike traditional subway entrances that protrude above ground, this design keeps the entrance below the surface level, preserving the panoramic views of the National Monument (Monas) and the surrounding historical landscape.

To enhance the commuter experience, the station incorporates "skylight" features—transparent glass panels that allow natural sunlight to penetrate the underground concourse. This design choice serves a dual purpose: reducing the need for artificial lighting during the day and providing passengers with a direct visual connection to the Monas obelisk as they exit the station.

The construction of the Monas and Thamrin stations is part of the larger MRT Phase 2A project, which spans approximately 5.8 kilometers. This phase is divided into several contract packages, with CP201 being the most advanced. The station itself measures roughly 220 meters in length and is situated at a depth of 15 to 18 meters below ground level. Once completed, it will serve as a vital link for office workers in the Medan Merdeka area and tourists visiting Jakarta’s most famous landmark.

Chronology: From Groundbreaking to the Final Stretch

The journey of MRT Phase 2A has been one of engineering resilience. Following the successful launch of Phase 1 (Lebak Bulus – Bundaran HI) in 2019, the Indonesian government and PT MRT Jakarta prioritized the North-South extension to connect the city center with the historic "Old City" (Kota) area.

• 2020 – 2021: The Foundation Phase: Despite the global challenges posed by the COVID-19 pandemic, PT MRT Jakarta initiated the CP201 package. This period focused on utility relocation, including the complex rerouting of fiber optic cables, water pipes, and power lines along Jalan M.H. Thamrin and Jalan Medan Merdeka Barat.
• 2022 – 2023: Tunnelling and Structural Milestones: Two massive Tunnel Boring Machines (TBMs) were deployed to carve the path between Bundaran HI and Monas. During this phase, the main structural "box" of the Monas Station was completed. Engineers utilized the "box jacking" method to create underpasses without disrupting the heavy traffic on the capital’s protocol roads.
• 2024: The Finishing Phase: As of July 2024, the project has reached 92.5% completion. Current activities have shifted from heavy civil engineering to architectural finishing and systems integration. Workers are currently installing mechanical and electrical (M&E) systems, laying down the permanent tracks, and finalizing the interior aesthetics.
• 2025 – 2026: Testing and Commissioning: Following the completion of construction, the project will enter a rigorous phase of system testing, including signaling, power supply, and trial runs for the rolling stock.
• Late 2027: Commercial Operations: The Monas and Thamrin stations are scheduled to open their doors to the public, marking the completion of the first segment of Phase 2A.

Supporting Data: Engineering Precision and Technical Specifications

The complexity of the CP201 project is reflected in its technical data. Building a subway in Jakarta is uniquely challenging due to the city’s geological profile.

1. Geological Challenges:
The soil in Central Jakarta is categorized as "soft clay," which necessitates advanced stabilization techniques. To prevent land subsidence and ensure the integrity of nearby historical buildings, PT MRT Jakarta employed real-time monitoring sensors and high-pressure grouting.

2. The Box Jacking Innovation:
To connect the station entrances under Jalan Medan Merdeka Barat, engineers used the "box jacking" method. This involves pushing pre-cast concrete segments through the soil using hydraulic jacks. This technique was vital because it allowed the construction to proceed without closing down one of Jakarta’s busiest traffic arteries.

3. Station Dimensions and Capacity:

• Monas Station: 220 meters long, 15-18 meters deep. It features two main entrances: the South Entrance (facing the National Monument) and the North Entrance (located near the Museum Nasional/Jalan Museum).
• Thamrin Station: Located at the intersection of Jalan M.H. Thamrin and Jalan Kebon Sirih, this will be the longest station in the entire MRT Jakarta network, spanning over 400 meters. It is designed to serve as an interchange for the future East-West Line.

4. Integrated Facilities:
The Monas station will house a long underground corridor that doubles as a public gallery. This 200-meter-plus space is slated for art installations, educational displays regarding the history of Jakarta, and retail kiosks, transforming the commute into a cultural experience.

Official Responses: Leadership Perspectives on Project Delivery

Weni Maulina, the Construction Director of PT MRT Jakarta (Perseroda), expressed optimism during a recent site visit. She emphasized that the project is not only on track but is setting a new standard for urban infrastructure in Indonesia.

"Alhamdulillah (Thank God), for the Monas station, we are currently at the 92% to 93% mark. We are in the final stretch. God willing, by next year, the physical construction will be finalized, and we will move toward the operational readiness phase for the Monas segment," Maulina stated.

Addressing the technical hurdles, Maulina noted that the soft soil of Jakarta was the "greatest adversary" during the excavation phase. "The soil conditions between Bundaran HI and Monas are relatively soft, which required very meticulous engineering calculations. However, we have successfully navigated these challenges, and the structural integrity of the tunnels and stations is guaranteed," she added.

The management also confirmed that the development of the Thamrin and Monas stations is being synchronized. "These two stations are a package deal. They will be inaugurated and operated simultaneously. We are committed to ensuring that by late 2027, the public can enjoy this new extension," Maulina concluded.

Implications: Connectivity, Heritage, and Economic Growth

The completion of the Monas MRT Station carries profound implications for the future of Jakarta.

1. Urban Connectivity and Decongestion:
By extending the MRT further north, the city is providing a viable alternative to private vehicle use in the central business district. The Monas and Thamrin stations are expected to handle tens of thousands of passengers daily, significantly reducing the traffic load on Jalan Thamrin and Jalan Sudirman.

2. Preservation of Heritage:
The "sunken" design of the Monas station represents a shift in urban planning philosophy—one that prioritizes heritage preservation. By keeping the infrastructure unobtrusive, the project respects the visual sanctity of the National Monument, which is a symbol of Indonesian independence.

3. Tourism and Cultural Stimulation:
With an entrance leading directly to the Monas park and another near the National Museum, the MRT will become the primary mode of transport for domestic and international tourists. The inclusion of an underground gallery space will also provide a platform for local artists, potentially turning the station into a destination in its own right.

4. Economic Multiplier Effect:
Transit-Oriented Development (TOD) around the Monas and Thamrin areas is expected to attract new investments. Property values in the vicinity are projected to rise, and the increased foot traffic will provide a boost to local businesses and the hospitality sector.

5. Environmental Impact:
As Jakarta continues to battle air pollution, the expansion of the electric-powered MRT network is a cornerstone of the city’s "Green Jakarta" initiative. Each full MRT train can replace hundreds of cars and motorcycles, leading to a measurable reduction in carbon emissions.

As the final tiles are laid and the systems are powered on, the Monas MRT Station stands as a testament to Indonesia’s engineering capabilities. When the first trains roll into the station in late 2027, it will mark the beginning of a new chapter where Jakarta is no longer defined by its traffic, but by its seamless, modern, and culturally-integrated mobility.