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Helix bridge , Singapore

The world's first curved double helix bridge, inspired by DNA

This landmark bridge at Singapore’s Marina Bay is inspired by the geometric arrangement of DNA, with a walkway encircled by opposing double helix structures of stainless steel.

At first glance, the bridge appears incapable of carrying substantial load. However, Arup designed the bridge’s two delicate helix structures to act together as a tubular truss – inspired by the inherent strength of the curved DNA molecule.

Using Arup’s own 3D software to explore possible solutions, a method of successfully linking the two helices was found. The concept was developed in 3D in a virtual, digital environment.

Lighting design

Arup’s lighting designers emphasised the DNA-inspired design through a series of dynamic multi-coloured LED lights installed on the helix structures.

The outward-facing luminaires accentuate the sweeping structural curves, with another discreet array of lights illuminating the internal canopy of glass and steel mesh to create a dynamic membrane of light. The inner helix uses white light to illuminate a path for pedestrians.

Four viewing ‘pods’ extend out over the water, allowing visitors a 360 degree view of the skyline. Glass openings in the floor provide a connection to the water below.

The 280m-long bridge is the world’s first curved double-helix bridge, and provides pedestrians a direct connection between Marina Centre, the waterfront area and Marina Bay Sands® integrated resort.