Thanks for the photos. We have one coming up too.
Sue
Anything is possible if you do not know what you are talking about.
Mark R. wrote: Is this of any value ??? ....Mark.
Is this of any value ??? ....
Mark.
Nice bridge! ... Um, it's a through girder not a trestle...
Notice the depth of the track supporting cross girders... these would be deeper than the same girders on a parrallel sided bridge... because the longer ones have a greater spen... and they're all the same depth regardless of end to keep the construction straight forward.
Also the girder on the curved track side is straight... as girders on curved track bridges are... while the curved side of a trestle is likely to be curved to conform to the track.
The board walks are probably there to facilitate maintenance... and would help to hide any linkage for operating the switch.
It's interesting that only the curved route has a bridge guard rail... and only one.
Other details... the right hand board walk has a nice hand rail to stop maintainers falling through the open girders. The left hand girder carries a bunch of communication cables.
Nice pic
It,s quit interesting how we model into situations because of (FILL IN THE BLANK). Only to
find out that a prototype exists some where. Real railroads had to deal with situations because
of (FILL IN THE BLANK) also.
soumodeler wrote:I don't know if I have ever seen a turnout on a trestle before though. Anyone have a picture?
I have been told that at one time where the service road is, used to be a second track. This is used as the tail of a wye. About a mile behind the train is Prospect, Fox Junction, the D&RGW North Yard, Utah Junction so basically all points north and west. Eventually the Moffat tunnel. The straight track from the turnout goes to Union Station, the curved track goes to the east bound "CB&Q" main. The Amtrak California Zephyr is turned here and backed into Union Station every morning.
The track cutting across near the top of the photo is the old C&S track connecting Fox Junction (to the north) to the old Rice Yard (now 6 flags amusment park). After the Rice yard is where the D&RGW & Santa Fe joint line began. Since the yard and C&S main are now gone, for all practical purposes this now the beginning of the joint line to the south.
soumodeler wrote: Make the trestle supports (bents I think they are called) increasingly wider. Have the beams go across at the angle of the turnout. It should work out. I don't know if I have ever seen a turnout on a trestle before though. Anyone have a picture?
Make the trestle supports (bents I think they are called) increasingly wider. Have the beams go across at the angle of the turnout. It should work out. I don't know if I have ever seen a turnout on a trestle before though. Anyone have a picture?
On one of the best days of my life, I was riding in the cab of a 2-8-2T when it went over a double-wide trestle, a shallow and short one, that had a turnout basically straddling it. So, it is done when it is necessary.
I think your advice makes sense, since the company would not waste any more wood or construction time than was absolutely necessary to achieve its aims at that crossing. The caps, as they are called, will get longer as they must, or doubled, and the numbers of vertical timbers will rise, with the batter on the outermost as on all the other bents. Sway braces and girts would be added outboard of the main frame as necessary to stabiliize the whole thing.
Having done some custom work for my newest layout, I have realized that there is a great deal of satifaction in doing it. I hope it works for you.
That shot was taken in Bethlehem Pennsylvania.
¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ
That's a great shot of 7607! Where is that?
Jay
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Great pic... man this could have given me another 8 inches on a siding if I had known this...DOH... I just assumed that one would NEVER do this... ah, I should remember in real life, NEVER is almost NEVER said... uh....
Brian
WCfan wrote:I have a tight spot on my layout where I need a turnout on a trestle bridge. Does any one have any advice on how I should build it.
If you are doing a ballasted deck instead of open trestle, it would be easier to construct and hide switch linkage. Either way linkage will be needed to throw the points to a switch machine behind/ under one of the abutments. A piece of music wire within a tube to a bellcrank would be my suggestion.
Modeling B&O- Chessie Bob K. www.ssmrc.org
Yeah, like that. Angle the one side and just lay the track. Remember to use a closer tie spacing on bridges if you are handlaying it. I don't know what you could do about that if you are using commercial turnouts.
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