As to the Llanrwst bypass, Llanrwst must be the only town in the whole country which, when asked around 15 years ago "Do you want a bypass" loudly said NO WE DON'T.
So, they didn't get one. There were plans, of course there were usual objections, but the whole body of opinion in Llanrwst was leave it as it is.
Not so sure they would say the same now, 15 years later