Elkhorn Tunnel

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  • paulytechnic
    Senior Member

    • May 2010
    • 152
    • Tampa, FL
    • General

    #1

    Elkhorn Tunnel

    I've really been enjoying Kenny's upgraded Pocahontas route lately! It's truly a work of art that adds much needed life and detail to an already favorite route. However, one landmark I wish was included was the unique west portal of Elkhorn Tunnel, with the massive ventilation system and blowers intended to force fresh air into the tunnel during the steam era. The blowers are no longer active today, but the large metal shroud and and ductwork still remain, which make for a really interesting structure. (The real Elkhorn Tunnel can be seen here: https://www.railpictures.net/photo/852989/ ...and here: https://www.youtube.com/watch?v=iWEVPpGPZn8 )

    I can definitely understand why it wasn't included in the route, since it would require a very specific (and complex) model that couldn't really be used elsewhere. Never one to pass up a good challenge and a chance to research a unique piece of railroad history, I decided to try my hand at modeling this portal. There don't seem to be really good drawings or dimensions out there, and photos of it from certain angles also don't seem to exist publicly, so I'm relying on a lot of eyeball estimation. Certainly, anything is better than nothing, so hopefully it'll turn out to be "good enough" in the end.

    Here's what I have so far, but there's still much work to be done. I'll post my progress along the way here, though updates may be infrequent.

    Elkhorn Tunnel 2025-06-05 205714.png
    So far, the concrete portal itself, metal shroud, base and terrain (both intended to cover the hole made in the terrain) are completed and textured. I'm just starting modelling work on the ductwork and blower housing on one side.
    Attached Files
    Paul
    Virtual Groundskeeper
  • paulytechnic
    Senior Member

    • May 2010
    • 152
    • Tampa, FL
    • General

    #2
    A couple of additional angles: one from the inside and another view of the shroud. The ductwork in progress will eventually be angled more outward like the prototype.

    Elkhorn Tunnel 2025-06-05 214926.png

    Elkhorn Tunnel 2025-06-05 215038.png
    Paul
    Virtual Groundskeeper

    Comment

    • DirtyRam
      Senior Member

      • May 2010
      • 107
      • Northwest Lake Ontario
      • North - North American
      • General

      #3
      Hey Paul, good stuff. Thanks for your efforts bro

      Comment

      • paulytechnic
        Senior Member

        • May 2010
        • 152
        • Tampa, FL
        • General

        #4
        Did initial placement in the route with TSRE to do final tweaks with sizing and shapes (the blowers and ducting seem especially hard to get right). The portal was designed for use with Atracks (and Eric's USTracks default replacements), though default tracks would still work. Unfortunately, the tunnel profiles of ScaleRail or USTracks are far too low to be used here.

        Elkhorn Tunnel 2025-06-06 180554.png

        Elkhorn Tunnel 2025-06-06 180755.png
        Paul
        Virtual Groundskeeper

        Comment

        • landnrailroader
          4000 Post Veteran



          • Nov 1999
          • 4171
          • Jacksonville,, FL, USA.
          • ORTS

          #5
          Looking good Paul. I was through that tunnel in Feb. 1972 when N&W leased the Southern Track Geometry car (and me and my crew with it). By then a Claytor was in charge of both N&W and SR, so although all leases out of the car had ended in 1971, we continued to test the N&W another year. Although we went through there at track speed, there was a distinct odor of diesel exhaust which filled our car enough that we open the doors at both end to air it out, once we were in the open, so I am not sure it was a good idea to shut down the ventillation but it is to this day, if it even exists today.

          Comment

          • paulytechnic
            Senior Member

            • May 2010
            • 152
            • Tampa, FL
            • General

            #6
            Fantastic story, Jerry! 😁
            Paul
            Virtual Groundskeeper

            Comment

            • kennyeaton
              Senior Member


              • Oct 2008
              • 268
              • Stony Point, NC
              • MSOR

              #7
              Hi Paul,

              I found a few photos of Elkhorn.

              Your tunnel entrance is looking great. I hope you upload this to the library when finished. I am still working on a final update for the Pokey 2.0 adding vegetation and other things to all the branch lines that were not finished when I published the route back in December. With your permission, I'd like to include your tunnel in the final update so everyone that has already downloaded the route can have it as a very simple "copy/paste" when the update becomes available.

              Kenny
              You do not have permission to view this gallery.
              This gallery has 3 photos.

              Comment

              • dcarleton
                1000 Post Veteran


                • Nov 2008
                • 1004
                • MSOR

                #8
                Just to show how unique the N&W was, this was the only location (in North America) where a mainline mountain tunnel electrification (albeit on a different alignment) was scrapped in favor of modern steam locomotives. All other mainline mountain tunnel electrifications were eliminated after the diesels arrived.

                Comment

                • paulytechnic
                  Senior Member

                  • May 2010
                  • 152
                  • Tampa, FL
                  • General

                  #9
                  Originally posted by kennyeaton
                  Hi Paul,

                  I found a few photos of Elkhorn.

                  Your tunnel entrance is looking great. I hope you upload this to the library when finished. I am still working on a final update for the Pokey 2.0 adding vegetation and other things to all the branch lines that were not finished when I published the route back in December. With your permission, I'd like to include your tunnel in the final update so everyone that has already downloaded the route can have it as a very simple "copy/paste" when the update becomes available.

                  Kenny
                  Thanks, Kenny! Yes, I definitely plan to upload this to the file library when I'm done. I'm hoping to also include the world file along with it, so it can just be dropped right into current version of Pkey 2.0 without fiddling with TSRE. And by all means, feel free to include my tunnel in your final route update! (You can also use my generic N&W portal that I uploaded to the file library last month, if you like.)
                  Paul
                  Virtual Groundskeeper

                  Comment

                  • paulytechnic
                    Senior Member

                    • May 2010
                    • 152
                    • Tampa, FL
                    • General

                    #10
                    The basic shape of the ducting and blower is done and textured, and additional details are now being added. Lots of eyeballing and wild estimations are happening at this point! I'm just working on this one side since the whole tunnel is mostly symmetrical. When finished, this entire duct/blower assembly will be copied to the other side of the portal.

                    Elkhorn Tunnel 2025-06-11 202537.png
                    Attached Files
                    Paul
                    Virtual Groundskeeper

                    Comment

                    • anderson martins
                      Senior Member

                      • Feb 2005
                      • 553
                      • belo horizonte, minas gerais, brasil

                      #11
                      Originally posted by paulytechnic
                      The basic shape of the ducting and blower is done and textured, and additional details are now being added. Lots of eyeballing and wild estimations are happening at this point! I'm just working on this one side since the whole tunnel is mostly symmetrical. When finished, this entire duct/blower assembly will be copied to the other side of the portal.

                      Elkhorn Tunnel 2025-06-11 202537.png
                      Very good to have shown. I had not heard of this system.
                      Chimbica Dash8

                      Comment

                      • paulytechnic
                        Senior Member

                        • May 2010
                        • 152
                        • Tampa, FL
                        • General

                        #12
                        More details added to what will eventually be the opposite side of the blowers facing away from the tracks. As with the real Elkhorn Tunnel, the blowers' gearboxes remain, but only the mounts of the long-removed electric motors remain.

                        Elkhorn Tunnel 2025-06-16 182840.png
                        Paul
                        Virtual Groundskeeper

                        Comment

                        • paulytechnic
                          Senior Member

                          • May 2010
                          • 152
                          • Tampa, FL
                          • General

                          #13
                          Main structure is now complete! Just a few minor details left to do, some snow textures, and a more permanant installation in Pokey 2.0. In a way, the outstretched blower "arms" remind me of the Great Sphinx of Giza. Elkhorn Tunnel may not be nearly as old, but it's still a still a monument of sorts.

                          Elkhorn 2025-06-21 154830.png

                          Elkhorn 2025-06-21 154937.png

                          Elkhorn 2025-06-21 155107.png
                          Paul
                          Virtual Groundskeeper

                          Comment

                          • NW 2156
                            2000 Post Veteran

                            • Aug 2007
                            • 2290
                            • Carolina's

                            #14
                            Any ideas as to when the blowers came out of service? When did the large motors disappear?

                            Seems like the total yearly operating expense for these would be fairly low.

                            Robert
                            Last edited by NW 2156; 06-23-2025, 11:51.

                            Comment

                            • Orbita
                              Senior Member

                              • Oct 2020
                              • 324
                              • Somewhere on the NYC Water Level Route surrounded by corn
                              • English, Limited French
                              • MSOR

                              #15
                              These blowers were common in the steam era. I would assume they were deactivated circa 1960 when N&W discontinued steam use.

                              The Winston Tunnel in Illinois has a similar system.
                              Last edited by Orbita; 06-22-2025, 09:53.
                              Kyle

                              NYC - Road of the Future

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