A pedestrian bridge with the DNA structure

Double helix bridge

DNA is recognized as the identifier of life, and based on this concept, the Marina Bay Pedestrian Bridge impresses us with its unique design so far and a geometry that will allow the similarity of being walking through a DNA grid.

In plan it has a curved shape, with a passage of 6 meters wide, almost 300 meters in total length and 65-meter spans, it will connect the Central Business District of Singapore with the casino complex recognized as the largest in the world. It is designed for pedestrian use, so it has viewpoints along its path, surely an enviable destination to enjoy in the area recovered from the sea known as Marina Bay.


65 people from different branches participated in its design to achieve a product that will give a new milestone to bridge engineering, implementing concepts of balance of helical forces not used before. and surprisingly, the bridge will use 20% less steel than if it had been developed under a conventional design.

The primary grid was built using Bentley Generative Components, then the structural design with Bentley Structural that now has STAAD and RAM integrated (acquisitions of the last three years). The 3D animation was made with Bentley Triforma. For different processes, it was programmed with Visual Basic and with the complicity of Excel to make approximations that would allow the complexity of the design not to affect its modular construction.

The ingenuity is due to Arup, Who with this project became creditors of the First in the BE Awards competition the year 2007 in the category Design, Analysis and Structural Documentation in the Civil Engineering line.

Golgi Alvarez

Writer, researcher, specialist in Land Management Models. He has participated in the conceptualization and implementation of models such as: National Property Administration System SINAP in Honduras, Management Model of Joint Municipalities in Honduras, Integrated Cadastre-Registry Management Model in Nicaragua, Territory Administration System SAT in Colombia . Editor of the Geofumadas knowledge blog since 2007 and creator of the AulaGEO Academy that includes more than 100 courses on GIS - CAD - BIM - Digital Twins topics.

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  1. As a student of civil engineering I really like the idea since if this is the structure of our DNA and it is super resistant because it does not test with a bridge with these structural characteristics and see and internalize results of the efforts of the reinforcing bars (Steel), if one intends to make this material or another, what is important is to see the behavior of the bridge before the effects of our mother-nature.

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