I can't speak to a specific route, and perhaps heights are getting ever "bigger" as widths seem to be, but for years the "standard height" you could be reasonably assured of on many highways is (was?) 13'6". That's not to say that many overpasses etc. might not be lower, but if you were on a truck route then I believe they would be marked as low clearance. In other words, they would "expect" 13'6" high vehicles to be coming through.
When I've arranged transport for overheight boats (has been a few years), if they were over 13'6" they could usually still go (although they sometimes had to skip a certain marina or whatever due to a certain low powerline, overpass, etc.), but the truckers would often have to take a longer or different route, and perhaps get permits and/or adhere to certain hours of operation, etc. (that last might only be for overlength or over-width). I think for the permits and hours, it can vary state to state.
Although there are probably digital ways to do it now, there are special trucker's atlases (they are available on Amazon) that show this sort of info (plus grade percentages, etc.). I think some Garmin-type mappers do now too (if you get a trucker or RV specific one?).
So that's a long, rambling reply to say I don't know, specifically. I'm actually surprised to read that federal highways are 16'.... maybe 13'6" only sticks in my mind because most boat deliveries involve secondary roads at either end of the trip?