Here it is 13’6″ in height and 8’6″ in width. More and you will need special permits. In Georgia, you will find more info on the GA DOT site. For other states look under Department of Transportation per your particular state.
Here on Lake Lanier there are many places (both public and marina) to launch and pull boats. Call Snug Harbor if you need a sailboat pulled or launched or just need some assistance. Based on your needs we can help determine what would work best for you.