Construction of a new big infrastructure project in Indonesia has started: the Semanggi flyover in Jakarta's central business district. The project involves two additional elevated ramp roads above the existing intersection at Semanggi (hence creating an interchange). Improving the existing road infrastructure at this location is required in order to ease severe traffic congestion that occurs on working days. The project, which requires high-end technology, kicked off on Friday (08/04) and is scheduled to be completed in August 2017, ahead of the 2018 Asian Games.
According to Jakarta Governor Basuki Tjahaja Purnama (better known as "Ahok"), the Semanggi flyover will curtail current traffic congestion in the area by 30 percent when completed in late 2017. The project is estimated to cost IDR 360 billion (approx. USD $27.3 million) and is fully financed by Mitra Panca Persada, a subsidiary of Japan-based property management firm Mori Building Company. Mori Building Company, which plans to develop a new building in the Semanggi area, managed to make a deal with Jakarta's local administration. In return for a higher building floor coefficient (the ratio between the percentage rate of the building's full floor area and the land area), the company agreed to fund the Semanggi flyover project.
Construction of the project is in the hands of state-controlled (yet publicly-listed) Wijaya Karya (Wika), while its subsidiary Wijaya Karya Beton (Wika Beton) will supply the materials needed for its construction.
The flyover will be built above the existing Semanggi intersection in front of the well-known Semanggi shopping mall in South Jakarta. The elevated roads will cater to vehicles traveling from Grogol (West Jakarta) to Senayan (South Jakarta), and from Sudirman (Central/South Jakarta) to Cawang (East Jakarta). The West-South ramp is planned to be 769 meters long (between 6 to 11 meters above ground level). The other ramp is approximately 826 meters long with a height of up to 11.5 meters.
The existing Semanggi intersection comprises the shape of a four-leaved clover leaf (in Indonesian: semanggi). This is an important arterial road in the ‘golden triangle’ area of Indonesia’s business district (this triangle comprises Sudirman, Thamrin and Kuningan).