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Developing the Longest Double-Decker Bridge in the World Through BIM Technology

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PT. Wijaya Karya(WIKA), an Indonesian-based construction company, faced the issue of designing and building the Harbor Road 2 Project. With a limited budget of over USD 530 million, the task of creating a complex 8.95-kilometer toll road made it an almost impossible feat to do with traditional 2D design methods. To put it in perspective, WIKA’s engineering manager, Fery Safaria, compared the scale of the project to be four times wider than that of the Vatican City. However, with the use of BIM technology, the monumental task may prove to be more than manageable.

Facing an engineer’s dilemma

The Goal of the Harbor Road 2 is to function as an effective way to decongest traffic by serving an estimate of over 63,500 vehicles per day. With this new toll road, economic and tourism development in the area can facilitate access to the FIFA 2021 U-20 World Cup Matches. Unfortunately, there are many caveats to reaching this goal.

With any construction project, there are certain restrictions and limitations present beyond budget concerns. For one, the Indonesian government demands that the bridge should avoid using piers that can negatively affect the existing river traffic. Additionally, there’s the issue of building around gas pipelines, fiber optic cables, and low rise buildings. WIKA’s strict deadline on the Harbor Road 2, requires them to accomplish it before the World cup event to accommodate faster travel for both locals and tourists alike.

Utilizing modern solutions

Because of the various factors present, WIKA needed to use a more efficient solution by making as few mistakes as possible. 3D BIM methodology proved to be the best way to collect data through various modern means, from photographing 166 hectares of land to foster collaboration between different teams. OpenRoads, for example, helped in curating the alignment of roads, ramps, and approach structures. At the same time, RM Bridge predicted the tendons and box girder structures for the double-decker bridge’s different method variations. With the use of these digital tools, WIKA increased bridge modeling efficiency by 40% and saved a staggering 10% of its construction budget.

Delivering results ahead of schedule

By using BIM methodology, WIKA gained access to an accurate model that shortened build time, reduced inspection time, and sped up the overall development and quality of the project. Because of this, reviews from stakeholders became easier for faster decision-making. It resulted in only four months of design completion compared to the seven months it would’ve taken for traditional 2D design methods. 

WORDS: Gerald Manuel

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