A 3D printed bridge gives new shape to large-scale manufacturing

In October of 2017, the first 3D printed bridge bore a group of hard-hat-wearing city officials on bicycles as they wobbled across a canal in the city of Gemert in the Netherlands.

Officials and locals celebrated the opening of the 26-foot (8 meters) bridge that connects two roads over a small water-filled canal, said Phys.org. This structure represents a milestone for 3D printing of large-scale objects.

Printing the bridge’s 800 layers took about three months. The designers say the reinforced, pre-stressed concrete can handle loads equivalent to the weight of 40 trucks. In Amsterdam, Dutch startup MX3D is printing components for a stainless steel bridge to span a canal, according to Phys.org.

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