Very difficult to understand what to do here, even after reading the description. As a player, I feel like I have no agency over anything that's going on, and I just have to wait and hope things work out. I can't really tell the difference between Steel and Concrete bridges either, and if you lose your bridge you're completely cooked and can't do anything. If there were more ways to influence the game aside from just... waiting as points tick up, this could be a fun little micro-management experience!