You’re right. That’s a good ways off.
Maybe that was just one aircraft. The tweeter said there were lots up. I’ll have to see what the planefags say later tonight.
This might help clarify the distance between the plane and the interstate. Yours truly lives roughly at the x.
You can see that the plane track is to the west and actually only goes ease to the beginning of the area that was closed. The interstate would have been closed from the intersection of I68 and I79 in WV to the intersection of I68 and I81 in MD. That is if this map is correct. I'm thinking that it was only closed to Friendsville which would be at the 4-mile marker in MD.