Sorry, I worded that slightly badly. Huge cracks and possible condemned buildings, not train infrastructure.
There are huge cracks in many condo's, mine for example, which is very near to the MRT which is on concrete stilts, so for very obvious reasons they decided to suspend the trains until they checked it out, which as you say they have now done and are running again.
As for the condo's mine like many others are being inspected by external companies next week to see if they are safe to live in.
I'm moving out regardless, couldn't stand to live in there again after that experience.