There are experimental construction printers that use concrete. Unreinforced, expensive specialty concrete, though, and it looks like they take more than a day to run on something big. And I assume sometimes fail like every other printer.
I’d also like to see the pitch on GoFundMe. “Yeah, we actually do have tax collection powers, but we thought it’d be better if you specifically paid for this. Lines are open”
Edit: Wait, are we talking about the bridge? Lol, so this is a kilometers-long bridge that has to float in a bay on a kilometers-long barge, and get lifted into place and fixed to an existing, differently constructed bridge somehow.