I understand that it is still taxiable so, taxi it to .... wherever. A quick scan of Google Street-Thingy suggest that there are no low bridges between DSA and the M18 and once you hit the motorway, well, the world is your lobster.
I firmly believe that endless hours of GTA5 has made me a better and more assertive driver in the real world. In my experience, vehicles can be driven through quite small gaps if approached with confidence. And momentum. Yeah, momentum.
The wedge shape will probably help.