How easy is the machinery and tools needed to keep all the infrastructure running? Earth movers are pretty maintainable and barely depreciate. Survey tools thou

How easy is the machinery and tools needed to keep all the infrastructure running? Earth movers are pretty maintainable and barely depreciate. Survey tools though? They have gotten famcy right? Water management has gone quite high tech in some ways. I could see them falling apart kind of like when some hospitals had to revert to paper tape logs. It didn't scale anymore.