Just went through there on the way from CBR to Bateman's Bay.
On the Western side, at least half are still closed according to the information bulletin board. We tried to follow the "ATST" (?) track down but, apart from the first bit, it was largely closed/ususable due to fallen timber. If you know your way around there you might be able to make a good enough run of it but we were tired and couldn't explore properly to see how it all linked up (if at all) so ended up mostly having to stick to Maulbrooks Rd.
On the Eastern side of Mogo, there were a couple of good options off Dog Trap Rd which were in good nick. Due to failling light we didn't explore more, but I got the impression that's the side to go to at the moment. Could be wrong.