Naval infrastructure must survive relentless heavy use

Have navies ever suffered from cheaply built infrastructure comparable to poor-quality modern construction?

Yes, but poor construction tends to fail quickly under naval use; durable works require adequate construction quality.

Naval infrastructure has sometimes been built cheaply, but poor construction tends to collapse or deteriorate quickly. The harsh use of naval facilities makes quality necessary for a long service life. Roman forts and sites where fleets were built and maintained provide a contrasting example: their remains are still being found.