A Dutch startup has unveiled plans to build the world’s first 3D-printed bridge across an Amsterdam canal.

The plan involves using robotic arm printers that can ‘draw’ steel structures in 3D. The printers would traverse across the canal along the bridge’s edges, essentially printing its own support structure as it moves along.

The 3D printer is composed of advanced welding machines attached to industrial robot arms. Intelligent software operates these machines so they can print very complex metal shapes.

So far, the 3D Printer has been used to print smaller metal structures, but the bridge will be the first ever large-scale deployment of the technology.