Birdsville Track

Travelled about 6 weeks ago.
It is the Birdsville Track - some rough some smooth.

hi kevin
was up there last week track is in good condition usual rocks on road in places a few corrg. every now and then but over all as said good condition. we was sitting on 90k's
most of the time could have gone faster, if you like to travel fast. a lot of normal cars pulling normal caravans travelling track.
al

I think I'm a bit confused - you're from QLD and travelling 'up' the Birdsville Track !! Surely there's a shorter (travelling distance/time) route from QLD ?
As for 'conditions', expect a graded (sometimes), stone based road, subject to corrugations, dust and pot-holes. The conditions can vary frequently subject to the volume of passing traffic, the weights and speeds of the vehicles involved and dare I say it - RAIN. For up to date information on outback roads (opened/closed) have a look at LINK .
My approach to outback travel is if I am determined to go and there's no notices indicating roads closed (weather, flooding, repairs etc) I still travel and ALWAYS drive according to conditions. i.e. reduce your speed, allow extra travelling time, take regular breaks, check vehicle,van/trailer etc for damage, loose objects/items, tyre pressures, etc. So in my opinion outback road conditions will always be variable sometimes day to day. To me the most important information is if a road or roads are closed and for how long. This means you don't go forward, however, if a road is corrugated/dusty etc you can still proceed with consideration(s). Enjoy your trip.