You should be fine on interstates......highways will be a “crapshoot”! You should be good on most highways, but there’s always the posibility one may “sneak” up on you. If you stay on “designated” truck routes, you should be good, but, you will miss some of the good things about rv’ing. We’re pushing 13’6” , and are cautious about road choices. Overpasses are “NOT” your only concern. Last year, we were on a well used rural 2 lane road - no overpasses - we found a low hanging limb. No serious damage.....but contact none the less!