It wasn't a roadie explaining it, I think it was Billie. Yeah it would make a lot more sense sense if it was already the nickname of the bay bridge!! It would hold specific meaning to the band touring etc and specifically Billie with his dad being a trucker and how much his dad meant to him. It makes more sense than the story I saw which was Adrienne calls herself Adie, I'm sad, I'm on a highway that happens to be 80, 80 rhymes with Adie, oh I'm going to call her 80, I'm going to go tattoo 80 on myself and she'll be forever named after a highway because I'm probably high