Just got back from a camping trip from Charleville to Cobar, to Broken Hill and then to Mildura and back to Charleville. Roads are fine. The road from Charleville to Longreach is good, but there are a few potholes, nothing to really worry about.
As far as i know the road from Broken Hill to menindee (bitumen) is fine, can't remember if the road from Wilcannia to Menindee was open. The road from bourke to Wilcannia is definetly closed.
Have a good trip
Scott