You didn't say what type of RV you have, but 25' should be able to anywhere a car can. Our 5th wheel was our first RV and we dove up to Schnectady via Lancaster county the first trip using state roads and interstates, went through tunnels, etc., no problem. Get the GS road Atlas, it marks clearly all the roads available including truck routes. There are few places semi trucks can't go, so if they do it, we can do it. Except for parkways in CT and NJ, we have gone everywhere we wanted. Semi trucks deliver groceries and fuel to little towns all over the country, so there few roads you cannot navigate either. Relax and have fun!!
