It's a main road pretty much, nothing tricky about the trail so should be an easy drive, the only bit that may be considered tricky is at the Wolgan valley road end, a few hundred metres in (just past the caves) there is a slight rocky climb as it swings to the right, only about 20m of track. The rest is dirt road mostly. Pretty sure it is open but not 100% sure. Oh, and the name has changed in the last couple of years to Maiyingu Marragu.

Cheers
Steve