It's already too late to evacuate heavy equipment. You've seen the picture I posted of the Kakhovsky bridges over the canal lock. Well aside from that, there's the Antonovsky Road Bridge, which has been hit so many times that one end of one span hasn't got any uncratered conrete, and the Antonovsky Railway Bridge, which has a massive chunk taken out of one side such that a tank probably couldn't fit along the other side of the span, before we even get in to the issues of weight bearing capacity. Tanks are heavy - 40+ tonnes, even for old Warsaw Pact tanks.
Indeed, and they did so when they rushed in more troops to hold the line west of the Dnipro even after Ukraine proved they could hit both bridges with GMLRS, and the Antonovsky with tube artillery.It's amazing how rational people can see how something ends, yet carry on with the status quo regardless. It's a deep-seated human flaw. Can't bear to take a small loss now even when you're certain that means a huge loss later. Russia is doing something akin to climate denial.
What I want to know is why do they appear to be using conventional warheads rather than concrete piercing ones? Most of the weight of the M31's warhead is fragments. Replace that with a penetrator and give it a delay fuse, and it will kill conrete structures much more effectively. And don't give me the "but there isn't a concrete-piercing warhead for GMLRS" spiel - the GBU-28 guided bunker buster went from idea to design to manufacture to deployment in combat in less than three weeks, and rapid design and manufacturer is easier now than it was in 1991.