Increasing urbanization in Indonesia continues to bring in more and more vehicles on the roads, leading to frequent traffic congestion and gridlocks across the nation. With traffic projected to further increase by 63,500 vehicles per day by 2022, the country’s traffic density is rising on the busy roads. Thus, to reduce the impact of the frequent congestions on the north side of Jakarta, the Indonesian government has made the Harbour-II toll road a crucial part of its strategy for infrastructure development. The construction of the Harbour-II toll road aims to decongest and lower traffic volumes by diverting portions of traffic from Harbour-I to the Harbour-II toll road. Further, a strict timeline has been imposed to deliver the project since Indonesia is hosting the FIFA 2021 U-20 World Cup, and the Government wants to ensure congestion-free travel for all tourists.
Stretching over the existing Wiyoto Wiyono Toll road, or the Harbour-I road that connects Pluit-Ancol-Tanjung Priok in the North Jakarta area, will be the Harbour II road (toll). Together, the two will form Indonesia’s longest double-decker elevated toll road. The East Ancol to Pluit interchanges will be part of the new toll road; they will cover a distance of 9.67 km. Of the total length, the double-decker structure of the bridge will extend for 3.95 km along the Ancol river.
The Harbour II road is being developed on a budget of USD 530 million and is expected to be completed by 2022. The two interchanges of the Harbour II road are going to have 2×3 lane sections with an elevated box girder structure. Along with providing an efficient road network between Pluit and Ancol, the project will also accommodate intermodal services such as trains, toll roads, busways, and a light rapid transit. Citra Marga Nusaphala Persada Tbk (CMNP), an Indonesia-based independent consultant, is responsible for coordinating the planning, construction, operation, and maintenance of the project.
The use of 2D CAD in a project of the scale of Harbour Road II was challenging for all stakeholders involved. Since 2D CAD does not allow for stakeholders to communicate and collaborate in real-time, it was necessary for the contractor to transition to interdisciplinary 3D and 4D BIM solutions. The use of 3D and 4D BIM solutions enabled the contractor to coordinate and collaborate with the design team, the project coordinator, and the contractor to interact in real-time and address any issues in advance.
Drones for surveying
Since the Harbour II road is being constructed in a densely populated areas (in terms of population as well as high rise buildings), the use of ground surveying tools was not going to be as accurate as airborne surveying. For this purpose, the contractor used drones for surveying the entire swath of land, that is, 166 meters. The contractor photographed the entire area using drones/UAVs and then processed the data in GIS and BIM software for further planning and designing of the project.
BIM for creating digital models
The data collected from drones was incorporated within Bentley Systems’ ContextCapture to create a digital model, enabling collaboration between various teams. Context Capture Solutions provide a Connected Data Environment (CDE), which allowed the designers to iterate component positioning and helped them determine the necessary features in the design. To curate the road alignment, approach structures and ramp, the design team used Bentley System’s OpenRoads software and the Open Bridge software, which helped estimate the box girder structures and tendons for both roads and bridges. Further, project engineers of PT Citra Marga Nusaphala Persada Tbk (CMNP) also used SYNCHRO software for 4D construction modeling, determining work schedules, managing supply chains, estimating costs, and analyzing progress. The use of SYNCHRO software in the project lifecycle ensures timely (if not advance) completion of the project within the set budget.
The Harbour II road development project is a benchmark in Indonesia with respect to the use of geospatial and BIM technology in road and highway projects. The contractors used OpenRoads software to enhance the design quality and efficiency by developing effective BIM models, which led to faster decision-making and efficient quality control. The use of BIM models saved three months in the delivery of design. Therefore, the interdisciplinary BIM model ultimately helped the design team to save USD 60 million in costs and four months of project delays by detecting 85 potential clashes in the model during the design and construction process. The use of Open Bridge’s parametric design capabilities enhanced the bridge modeling efficiency by 40 percent, leading to additional savings of 10 percent of the total budget for the construction of roads and bridges.
Furthermore, the use of both geospatial and BIM solutions together helped the stakeholders save 28-man days in the plan and design phase of the project. The use of BIM applications in the design and construction of the Harbour II road will also help CMNP achieve return on investment by 2032 against the initial target date of 2035.
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