In reply to dango:
Hi. We climbed there on Saturday evening. The road closure barriers were just past the lower Wyndcliffe parking (coming from St Arvans), so you should be able to park there and walk the 5 mins down an empty road to the crag. It's the parking everyone used until a few years ago anyway.
At the weekend people were driving through the road closed barriers and parking below the crag. I'd be wary of doing this in the week though as they're more likely to actually be working (and it looks like the area of works is very close to the crag).
All the best, hope you have a good day.
Tom