Having seen some of the studies cited in the post above, I think the most likely option of replacing the former Milwaukee through Moses Lake would be to build upon part of the old NP to about Road 9 Northeast, north of Moses Lake, then down the hill and over to the airport. Its the shortest, and least populated. It just needs money and permits.
On another note, the NP and the GN almost had a traffic agreement at
Adrian.
Both the GN and the NP claimed to have rates via the Adrian interchange back as far as
1913.
The Adrian-Odair segment was being pulled up in
1978.
Dan