I generated all of the 1/3 arc second DEM, and marker files for Stampede Pass AND Snoqualmie Pass which was the MILW road route just to the north of Stampede. The NP and MILW were literally side by side for most of the miles east of the summits. I think I did all the DEM for Tacoma to Othello, and Auburn to Yakima. I had dreamed of making the route after I was done with the Siskiyou, before I realized how much of an undertaking I had bitten off with that route.
Auburn to Ellensburg would be the natural portion of the NP/BN/BNSF route to model, but Auburn to Cle Elum (~80 miles) would get the complete pass, as well as the logging branches to Roslyn & Ronald for switching opportunities. The only major difference in the route between NP days and modern operation is that the west side of the pass was double tracked under the NP.
The nearby MILW route was arguably the more scenic with 6 high trestles, and huge snowsheds, but would be quite the undertaking on its own.
I also have all the MILW track charts, and BNSF track charts for the route(s), as well as a collection of images of the structures on the line.
I would be happy to send the files to an individual or group SERIOUSLY interested in taking it on.
Below are some photos of the route in its 'mothballed' state in the 90's, as well as after the BNSF resuscitation of the line in 1996. Photos copyright their respective owners.
West Portal Stampede Tunnel 1996.jpg
West Portal of Tunnel #4.jpg
WB @ TUnnel #4.jpg
WB on Green River trestle.jpg
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