Marin has an important point about the overpasses being a bit lower in the east. *They are. *I have, however, moved 15 ft. high loads from Round Rock, TX (stone crusher conveyors) to Baltimore. *If my memory serves me, there were only 10 or so overpasses on the interstate (well marked) that had to be circumvented, and that was way back in the 80's. *Lot's of changes could have happened since then, but I doubt if they built any new bridges lower than 15' clearance. *The trouble is ya just can't pull up to a tight clearance overpass and creep under it when it's rush hour. *Travel times are justifiably restricted, and escorts are a must. *The nice thing, however, is that the truck scales just want to see you out of their State as quick as possible, and typically don't give you any crap.