Depends on the model right now. EURO would say you'd be dealing with ice on top of 4", PARA says it would've flipped to rain by that point so the ice on top of the 4" might be sorta out of the way (though roads still probably not great), original GFS says it would've been rained away, and ICON says you'll never leave your house again.
In sum... too early to know, Friday morning being icy is well within the realm of possibility.