I think Rube Goldberg designed this bridge

Discussion in 'Photos & Videos' started by TrainClown, Mar 26, 2005.

  1. TrainClown

    TrainClown Member

    Either Rube Goldberg designed this bridge, or they built it out of all the left over parts they had cluttering up the yard. I've never seen a bridge like this. I was doing a puppet show at the 15 Wing air force base, just south of Moose Jaw, and there it was. In all it's weird glory. :eek:

    You will also note the little road bridge in the background on some of the pix. Good thing it was winter or these bridges would be obscured by brush.

    This is the south end of the bridge. This part is timber tressal, as you can see. But wait! what is that strange cocreate abutment doing there?

    By golly! It just changed form to a steel girder span. See the little bridge in the background?

    That was so good. How about another shot. Say! There's another cocreate abutment and.........Holly Snarpin' Arfsoles! Who ordered the next section?

    This section crosses the river so I guess they were real scared of crossing water.

    The north end is sort of a mirror of the south.

    The tressal part is much smaller on the north end.

    Here is the whole bridge. It's hard to fit it all in one pic as it is so big, but you can get the idea.

    So, why not just build the tressal right up to the center span? Why the extra steel spans? Don't you think steel bridge work is more expensive than wooden tressal work with those concrete abutments? If steel is cheaper, then why have tressals at all? Why not make it all steel? Isn't that center span, overkill? Any thoughts on this? [​IMG]

    I hope you enjoyed this post and this strange bridge. [​IMG]

    TrainClown [​IMG]
  2. ezdays

    ezdays Out AZ way

    I think that they call that a "salesman's sample". He simply drives the client by and they pick out the section that they like for their new bridge. :D:eek::rolleyes::cool:

    Thanks for the pics.:thumb::thumb:
  3. Gary Pfeil

    Gary Pfeil Active Member

    Perhaps all but the center span was a wood trestle and had deteriorated. Tho I would expect all the wood to be replaced in that case. I don't think any wood trestles would have been built as replacements for a long time now.

  4. eightyeightfan1

    eightyeightfan1 Now I'm AMP'd

    "We used up all the money trying to replace that wood tressel with steel and concrete, so now we can't finish it. Gonna have to leave the rest as is."
  5. Muddy Creek

    Muddy Creek Member

    I'll bet the original idea was that the approach embankment would eventually be filled in up to the concrete. Maybe next year.

  6. Matthyro

    Matthyro Will always be re-membered

    What ever works , works.
  7. 60103

    60103 Pooh Bah

    I suspect that the two shallow girders go over some sort of road where they need the clearance.
    The center section goes over the river. It's longer so has to be deeper, but they don't need the clearance for canoes and fishing boats. The wood trestles just fill in after the concretes.
    Robin will reproduce this in cardboard by next weekend.
  8. Matthyro

    Matthyro Will always be re-membered

    You are not far off the mark on me making one David as I have started it on my Nn3 logging line and will get back to it when I get the ballasting done on the Georgetown Sub
  9. Muddy Creek

    Muddy Creek Member

    TC, is the center span much longer than the flanking steel spans? Can't tell from the photo, but that would explain the beefier center structure.

  10. Chessie6459

    Chessie6459 Gauge Oldtimer

    Amazing :thumb: :thumb: :thumb:
  11. spitfire

    spitfire Active Member

    :D :D :D :D :D :D

    Good one David! The scary thing is - you're probably right!

  12. XavierJ123

    XavierJ123 Member

    Thanks. Great timing. I am studying bridges and trestles for my layout. Now I am not worried at all about what to "slap" together. LOL:thumb:
  13. shaygetz

    shaygetz Active Member

    ;) :D :D ;) :D ;) :D ;) :D :thumb:

    Didja notice how it has cruder debarked timber on the north end trestle work and cleaner looking dimensional timbers on the south end? Pretty kewl, eh :thumb:
  14. babydot94513

    babydot94513 Member in training

    Tis an engineering design that leaves a lot to the imagination as to what the heck they were thinking. Perhaps the various design sections were an experiment to see what loads could be supported???
  15. TrainClown

    TrainClown Member

    I never noticed that Bob. Well spotted.

    Jeff, if it is an experiment, then it could be a costly one if the thing failed and they lost the bridge and the train.

    I was thinking about the trees beneath the north span, but would a railroad make concessations for an orchard? Isn't the "right of way", just that?

    TrainClown ;)
  16. SteamerFan

    SteamerFan Member

    Looks like the norh section goes over an access road, the center section over a river or flood channel, the south section goes over nothing important, but they made it look like the nort section (probably cheaper, less steel). ass for the 2 trestle sections, I suspect, as pointed above, that since they were still in good shape they opted not to replace them yet, when theyd o, they'll probably fill in to the first pier.

Share This Page