YOGYAKARTA - Longspan LRT Jabodebek, which was once a proud project by the Indonesian government, is now called a design error. Kartika Wirjoatmodjo, Deputy Minister of SOEs, revealed the question of a misdesign on the longspan bridge section in Kuningan, South Jakarta. So what is a longspan on the Jabodebek LRT?
President Joko Widodo responded to the Jabodebek LRT longspan which was called a design error. Jokowi said that if there was a wrong design, it must be evaluated and corrected. In addition, the president also advised not to look for mistakes from the Jabodebek LRT which became the first in Indonesia.
Meanwhile Kartika Wirjoatmodjo said the design error at the LRT longspan made the train speed slow down. So what is a longspan on the Jabodebek LRT and where is it located?
Longspan is a long concrete stretch on the Jabodebek light rail transit (LRT) path. The Jabodebek LRT stretches out connecting Cibubur and Bekasi with Kuningan. Almost all of these LRT trajectories are made by floating with a number of longspans.
Based on the explanation of the Jabodebek LRT Work Unit, the longspan construction is a bridge span with a pillar distance of up to 45 meters or more. Meanwhile, according to Britannica, the longspan is a stretch of buildings with a pillarless space that reaches 30 meters or more.
Longspan structures can be created across or float above anything, such as roads, rivers, bridges, or obstacles. The procurement of longspan aims to minimize traffic barriers on the road below. In the Jabodebek LRT, this application is in the Kuningan area.
Longspan at the Jabodebek LRT is included in the Indonesian Record Museum (MURI). The MURI award was received by PT Adhi Karya (Persero) Tbk as the contractor who handled the construction of the longspan.
The Jabodebek LRT longspan was recorded at MURI as a record for the concrete arch bridge with the longest span and smallest radius in Indonesia. In addition, this longspan also recorded a record testing of the Axial Statistic Loading Test as the foundation of the Bored pile with the largest burden in Indonesia.
The arch or longspan bridge was built using the balanced cantilever method. The longpan has a box girder type with a curvature radius of 115 meters. The main span of the longspan reaches 148 meters with a foundation testing load weighing 4,400 tons.
There are 10 longspan constructions on the Jabodebek LRT as follows:
This longspan is located on the Cross Service 1, namely the Cawang-Harjamukti crossing. The JORR longspan is located on the north side of Kampung Rambutan Station and crosses the intersection between South JORR and Jagorawi. Meanwhile, the Cililitan longspan is located near the exit to UKI and crosses the Jagorawi Toll Road.
The Cawang longspan is located at the meeting point for two service routes, namely the Cawang-Harjamukti 1 Service Cross and the Cawang-Jatimulya 3 Service Cross. Meanwhile, the Ciliwung longspan is located at the Cawang-Dukuh Atas 2 Service Cross.
The two longspans are located at the Cawang-Dukuh Atas 2 Service Cross. Longspan Cikoko is located near the Saidah Tower and crosses the Manggarai-Bogor Commuter Line KRL line. Meanwhile, Longspan Kuningan is located at the intersection of Jalan Gatot Subroto and HR Rasuna Said.
The Dukuh Atas longspan is located at the Dukuh Atas Station construction site. Meanwhile, Halim's longspan is located at the intersection between the Jakarta-Cikampek, Jagorawi, and Interior Toll Roads.
Longspan Cikunir is located on the Cikunir intersection between the JORR Toll Road and the Jakarta-Cikampek Toll Road. While the Bekasi River longspan is located above the Bekasi River. Both are on the Cawang-Jatimulya 3 Service Cross.
Demikianlah review apa itu longspan pada LRT Jabodebek. Terkait dengan polemik salah desain pada longspan LRT tersebut, Presiden Jokowi mengatakan jika ada penyesuaian sistem maka hal biasa dan harus dihitungkan serta direncanakan secara matang.
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