If the horizontal dimensions are too wide, and the vertical dimensions are too high, rest assured; we'll just do things diagonally!
We were recently asked if we could come up with a solution for transporting a rafter that was too wide to fit through the relevant building's doors horizontally, and too tall to fit through vertically. Going diagonally was the only option. We were able to do so using our 5-axle semi-trailer with specially constructed angled cradles on top. The result is shown in the photos below.