Have you already heard? I haven't. That's an amazing progress, I suppose! The only thing I know for sure is that I'd like to see it myself and step on it to try and feel it's real. Let's go to Amsterdam?!
You have some time to think over this idea. The MX3D will start building in 2017. The most incredible fact is that no more building area is required: the welding 3D-printer will be on the already built part of the bridge. If you can not fully figure it out, watch the video footages below.