Someone should write a book on all of these. If I remember right, there was even a Corduroy road of logs somewhere in VERY early Britain.
There’s a link in that long list of links above (I think, anyway, somewhere up there) about pre-Roman roadways; the author of the book involved appears to claim that the Romans didn’t build any roads in Britain, which is absurd. What did the Romans do in the rest of the empire, hire Britons?