I came across this via a friend. I've never seen it, but thought If I haven't, maybe a few here have not as well, so here ya go..https://www.twistyroads.com/
Looks like certain features will be free but then a paid "premium service" with additional features offered.
Looks like they're copying "Destination Highways". If you haven't seen those books and website, they rate roads, ride VFR800's, as well. They've done B.C., in Canada, and I believe Washington State, and Northern California. Very well done books.
Couldn't access their site, at Twisted Highway. Said my Username was in use, for 3 different names, then two email addresses were invalid.