You probably could make a 3rd printer capable of printing the steel components for a bridge. If you pour enough money and time down the drain, there’s no reason why you couldn’t have some robots handling the scaffolding and “3D printing” the concrete too. It would be several¹ orders of magnitude slower and more expensive than using the normal processes, but hey why build 10000 bridges when you can build just one that tech bros can masturbate to.
¹ this “several” is breaking the world record of heavy lifting
You probably could make a 3rd printer capable of printing the steel components for a bridge. If you pour enough money and time down the drain, there’s no reason why you couldn’t have some robots handling the scaffolding and “3D printing” the concrete too. It would be several¹ orders of magnitude slower and more expensive than using the normal processes, but hey why build 10000 bridges when you can build just one that tech bros can masturbate to.
¹ this “several” is breaking the world record of heavy lifting
There’s a 3D printed bridge in Amsterdam: https://www.dezeen.com/2021/07/19/mx3d-3d-printed-bridge-stainless-steel-amsterdam/