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MTH HO Arch and Girder Bridge

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  • Member since
    May 2004
  • 7,500 posts
Posted by 7j43k on Monday, December 3, 2018 9:47 AM

I think the bridge's days of up-downing are over.  The tracks on either side look abandoned.  From this picture, it looks like the original lifting mechanism has been surrounded by some modern flexible sleeves:

 

Here's an overhead view.  Note the remnants of a teeny turntable on the upper left of the bridge (first one in, to the right):

 

https://www.google.com/maps/place/Lübeck,+Germany/@53.8749823,10.6886002,372m/data=!3m1!1e3!4m5!3m4!1s0x47b20953f70b9df3:0xf4725f573e7e12b4!8m2!3d53.8654673!4d10.6865593

 

Ed

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Monday, December 3, 2018 8:53 AM

 Guess the thickness of the center posts plus the two 'outrigger' ones are enough to keep the bridge stable when raised. It only has to support the weight of the bridge itself, and there shouldn't be a lot of side forces on it - I doubt they would raise it in hurricane force winds. If they even get such thing in that area. It also appears the smaller side posts are inset slightly from the big central post - closer to the river/canal. Now if one of those side posts should fail....

                                    --Randy


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    September 2010
  • 121 posts
Posted by Canadian Big Boy on Saturday, December 1, 2018 9:16 PM

Thanks Henry and Ed for the info.

  • Member since
    May 2004
  • 7,500 posts
Posted by 7j43k on Saturday, December 1, 2018 11:02 AM

The prototype is in Lubeck, Germany:

 

 

It was built about 1900 as a railroad bridge.  It was apparently a hydraulic lift bridge.  This is the raised position.  I'm not sure if those post-looking things are just posts or are the lift mechanism.  If the former, it's odd that there's no sway bracing.

 

Ed

  • Member since
    December 2015
  • From: Shenandoah Valley
  • 9,094 posts
Posted by BigDaddy on Saturday, December 1, 2018 10:55 AM

You could browse here:

http://bridgehunter.com/category/railroad

The quest for prototypical correctness was much less years ago.  It may not have a real life counter part

Henry

COB Potomac & Northern

Shenandoah Valley

  • Member since
    September 2010
  • 121 posts
MTH HO Arch and Girder Bridge
Posted by Canadian Big Boy on Saturday, December 1, 2018 9:26 AM

Does anybody know the prototype bridge MTH used for this model?

If so, where is it, or where was it located? (railroad etc.)

Thanks

 

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