Originally posted by Allan
"Winding" perhaps.
These roads have not changed signficantly, other than being sealed.

https://1.bp.blogspot.com/-9mcTulLtN...1913FsmNEW.png

Except, of course, at places where modern 'incursions' have re-routed them or cut them short. This has happened at the 'sharp' end of the Amiens circuit, which you can check on Google Earth, working NW from Boves.