Jakob, pretty sure it would be considered closed, unless your one of the adjacent properties that have access right of way. As you probably know, it is managed by Gloucester Council. Unless your a local, and by that I mean, your normal residence, listed on your drivers license, is close by, then I suspect it is off limits.
And with NSW Police checking number plates of vehicles and stopping folks outside their areas, might be best to wait for Spring, or when travel restrictions are lifted.
It would be nice to see you out there again, one day.
https://www.health.gov.au/news/healt...thin-australia