In WW2, and when they needed more contract work, bridge companies would make LSTs for the Navy, and water towers for cities and railroad companies LST-669 was launched by the American Bridge Co. in May 1944.

I posted about the Chicago Bridge and Iron Works making rail road water tanks for steam locomotives, and water towers for cities a couple months ago https://justacarguy.blogspot.com/2025/07/the-chicago-bridge-and-iron-works-built.html

https://varney.yolasite.com/xxrs.php