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Lightening the bridge
Author: ex-BN
Date: 09-09-2013 - 10:52

SP5103 Wrote:
-------------------------------------------------------
> Was originally built in 1882 to cross the Bear
> River near Corrine, Utah on the original Central
> Pacific transcontinental line replacing a wooden
> bridge. Dismantled, then reassembled over the
> McKenzie River in 1902.
>
> Hayden Bridge
>
> Reusing a dismantled bridge on a branch off an
> upgraded mainline was actually pretty common. Pin
> connected trusses are essentially just a big
> erector set anyway.

Using your link I found the following to be interesting. The 224' bridge weighed 156 tons, adding 70 ton (gross) loaded 40' cars or locomotives brings the total to 548 tons. With 100 lb rail (probably high) it comes to 555.5 tons. (Bridge + train + rail) Probably a good bit more. The document states: "Originally the Hayden Bridge had guard rails, but they were removed to reduce dead load." I'm sure the guard rails were 100lb. or less but using 100 lbs. the guards weigh 7.5 tons or less than 1.4% of the total. I guess every bit counts.

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Subject Written By Date/Time (PST)
  GE 70 ton assignments on the SP SP5103 09-08-2013 - 11:18
  Re: GE 70 ton assignments on the SP Shortline Sammie 09-08-2013 - 12:18
  Re: GE 70 ton assignments on the SP pdxrailtransit 09-08-2013 - 13:58
  Re: GE 70 ton assignments on the SP SP5103 09-08-2013 - 14:42
  Re: GE 70 ton assignments on the SP Shortline Sammie 09-08-2013 - 16:33
  Re: GE 70 ton assignments on the SP Rich Hunn 09-08-2013 - 17:16
  Re: GE 70 ton assignments on the SP Rich Hunn 09-08-2013 - 17:59
  Re: GE 70 ton that was only half there... George Andrews 09-08-2013 - 18:24
  Re: GE 70 ton that was only half there... jbbane 09-08-2013 - 18:29
  Re: GE 70 ton that was only half there... Todd Montgomery 09-08-2013 - 18:53
  GE 50 and 70 tons SP5103 09-08-2013 - 20:30
  About those Weyerhaeuser units... Jeff Moore 09-08-2013 - 18:47
  Re: About those Weyerhaeuser units... George Andrews 09-08-2013 - 19:31
  SP 5100 Bruce Butler 09-08-2013 - 20:24
  Re: SP 5100 Russ Czuleger 09-08-2013 - 20:50
  M&ET xSP 70 tons SP5103 09-08-2013 - 20:52
  Re: About those Weyerhaeuser units... Tony Johnson 09-08-2013 - 21:24
  SP GE 70 ton paint schemes SP5103 09-08-2013 - 21:04
  The Bridge pdxrailtransit 09-08-2013 - 21:40
  Re: The Bridge SP5103 09-08-2013 - 21:51
  Re: 70 tonner in San Jose Bill Kohler 09-09-2013 - 07:45
  Re: 70 tonner in San Jose SP5103 09-09-2013 - 08:52
  Re: The Bridge jbbane 09-09-2013 - 08:47
  Re: The Bridge SP5103 09-09-2013 - 10:24
  Lightening the bridge ex-BN 09-09-2013 - 10:52
  Re: SP restricted branches in Oregon SP5103 09-09-2013 - 10:43
  Re: SP restricted branches in Oregon jdb 09-09-2013 - 15:22


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