In reply to idiotproof (Buxton MC):
I'm glad you corrected your post, because although I knew what you were asking, I was put off replying to your first attempt...!
I've been driving through the Froggatt road closure throughout, outside of working hours. And they knock off early on a Friday too.
Last time I drove through, which was a few weeks ago, there was a long section with no passing places below the Curbar turning, down towards the bridge, so you need to drive cautiously and be prepared to reverse a long way if you meet someone with similar intentions coming the other way!
Access to the upper part of the Froggatt road has been possible by driving through Froggatt village throughout.
Hope that helps?