Netherlands opened the world’s first 3D-printed concrete bridge, mainly for the use of cyclists in the Dutch town of Gemert.
3D printing is a method of manufacturing an object using a computer by placing layers of material one over the other.
The 8-metre bridge, which has around 800 layers, is made of reinforced, pre-fabricated concrete, and it took about three months to make it. It connects two roads across a water-filled ditch.
One of the advantages of printing a bridge is that much less concrete is needed than in the conventional technique in which a mould is filled. A printer deposits the concrete only where it is needed.