Hi @murph1134, and welcome.
It is my understanding that, until CS begins doing periodic updates from OSM, or any updates for that matter, changes to OSM will not be reflected in CS.
I have run into a couple of gated private roads, and fear these may the the first I will be forced to mark “manually complete”, which is done on the specific road’s CS page.
However, I am waiting until I have literally traversed every road I can, before resorting to marking a road manually complete (to 100% my city). I’m hoping that before I run out of roads to run, and nodes to collect, that CS will begin the periodic update process, and those inaccessible nodes will disappear from CS, and the roads will be marked as complete.
Hope that helps.
Eric
Here’s something on the subject from @JamesChevalier : OSM edits not making it into CityStrides