I purchase the Trucker's Atlas in laminated form from a truck stop about every 2 or 3 years. They don't change very much. I use it to double check states I am going through for low clearances and other local goofy laws. I still use my Rand RV GPS for regular travel needs also.
Since this height issue keeps coming up in different posts, I will add just one more tip. Even if staying on interstates, don't think that you do not need to check ahead for low clearance issues. There could be areas where you exit the interstate and need to cross under it for getting fuel or something else. Sometimes due to heavy traffic or whatever you could be distracted in these areas and not realize you are crossing under an overpass that is only 13'2" tall. Check you route the night before using the Trucker's Atlas!