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Photo from North side road
Author: d
Date: 02-03-2010 - 23:22

Pleased that the road continues to apparently be open to the public. Was this the right-of-way to the higher tunnel and short-term switchbacks? Now, mostly US Forest Service.

The Timetable "grade chart" is recommended. Two 2.2% grades (?) connected by the minimum radius vertical curve. WOW. Nearly all natural summits aren't nearly as sharp.

Regarding the notching for double stacks: Western steam era tunnels, in general, adequately clear double 9 1/2 foot cans. When the ocean shipping companies agreed to 10 1/2 foot cans, the railroads notched their tunnels as well shown in the photo.

We've been reading about Donner Pass. Now, there is one combination of the two tracks that clears double 10 1/2 foot cans. Significant reduction of Union Pacific traffic on the Feather River Route.

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Subject Written By Date/Time (PST)
  Down the Dragons Throat (Cascade Tunnel) Ross Fotheringham 02-02-2010 - 23:04
  Re: Down the Dragons Throat (Cascade Tunnel) Martin Burwash 02-03-2010 - 05:52
  Re: Down the Dragons Throat (Cascade Tunnel) Ross Fotheringham 02-03-2010 - 09:49
  Re: Down the Dragons Throat (Cascade Tunnel) Dr Zarkoff 02-03-2010 - 18:30
  Re: Down the Dragons Throat (Cascade Tunnel) Jim 02-03-2010 - 11:08
  Re: Down the Dragons Throat (Cascade Tunnel) SDP45 02-03-2010 - 12:40
  Photo from North side road d 02-03-2010 - 23:22
  Re: Down the Dragons Throat (Cascade Tunnel) Tom Rawson 02-04-2010 - 04:57
  Re: Down the Dragons Throat (Cascade Tunnel) Rob Harper 02-04-2010 - 07:03
  Re: Down the Dragons Throat (Cascade Tunnel) Key Route Ken 02-04-2010 - 11:57


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