Three Retaining Walls Under Construction in South Tangerang to Prevent Floods and Landslides
Retaining walls, or riverbank embankments, are being constructed at three locations in South Tangerang City. These structures are expected to prevent landslides and address ongoing flooding issues.
“Alhamdulillah, today I visited three construction sites within the South Tangerang area. We are directly inspecting the construction of retaining walls and gabions at these three locations,” said the Deputy Mayor of South Tangerang, Pilar Saga Ichsan, on Thursday (3/9/2026).
He inspected the construction of retaining walls in the Vila Pamulang area in Pamulang District, as well as Grand Serpong and Bukit Nusa Indah in Ciputat District, on Wednesday (2/9). According to him, each location faces different challenges, ranging from landslides and soil displacement due to river erosion to flood management.
He intends to ensure that construction proceeds according to the established plans and technical specifications. He also requested that supervisory consultants and service providers ensure all work adheres to applicable standards, particularly regarding construction quality, including concrete quality, aggregate mixtures, and the use of reinforcement.
“From what I can see, implementation is at 30 percent. So far, it remains consistent with the reviewed design, and God willing, all work can be completed successfully and according to plan by the end of this year,” he said.
The construction of river stone gabions in the Vila Pamulang area spans 164 metres, with a parapet or fence measuring 145 metres and a construction height of approximately five metres. This method was chosen because the location is within a river flow under the authority of the River Basin Organisation (BBWS).
“In Vila Pamulang, because it is the Angke River, we obtained permission from the BBWS. We were granted permission for semi-permanent installation using river stone gabions tied with wire,” he explained.
Meanwhile, in Grand Serpong, the construction includes the installation of new retaining walls four metres high and 165 metres long, the heightening of existing walls by 132 metres, and the construction of drainage channels spanning 429 metres.
In Bukit Nusa Indah, retaining wall construction is being carried out on both the left and right sides, totalling approximately 204 metres. The work also includes the construction of a 90-metre parapet, 204 metres of pedestrian and inspection paths, as well as water gates and several other complementary structures.
He requested that work at the three sites be accelerated to avoid delays caused by the rainy season. In addition to the construction of retaining walls and gabions, the normalisation of river flows must also be carried out promptly to anticipate stagnant water and flooding.
Beyond technical issues, Pilar also highlighted the presence of several buildings near the riverbanks that could potentially hinder urban planning and construction. He requested that sub-district and village officials communicate with residents to find solutions regarding the arrangement of buildings along the river.
“This is in the public interest, especially regarding uncertified buildings that must be surrendered for the construction of gabions. Personal interests must not override the public interest. That is my note,” he said.