You are correct. The bending changes the microscopic crystal structure in the steel and would be a weak point. You'd have to completely redo the heat treatment to get it back to normal and at that point you're essentially scrapping the bridge and using new steel, which is exactly what they're gonna do because they're not idiots like Musk
I love the attention to detail in the armor. It looks straight from 15th century Germany (well, the area eventually known as Germany)