48 state legal height is 13'6". Legal width is 8'6". To move it legally you would need to get a high wide permit.
You can call the state(s) and give them the loaded hight and width of the load, they can probably put you on a route that will get you to your destination. They may also want to know the axle loads.
Did you buy it and have it delivered or built on site?
You might be able to load it on a trailer, then cut the roof like house movers do to get it down. Then when you get to the final destination, scab the rafters back together and re-shingle it.