N&W in 1911--Kenova bridge

[NW Mailing List]

Okay, so the rails on the bridge itself were not raised, but the east end of the 
viaduct was about 5 feet higher than before. This corresponds to the difference 
in elevation between the platform and the upper waiting area at the station. 
(which I know from personal observation) Previously, the upper waiting area was 
at the same level as the platform (according to my father). Thanks for the 
clarification.    Jim Nichols




________________________________
From: NW Mailing List <nw-mailing-list at nwhs.org>
To: NW Mailing List <nw-mailing-list at nwhs.org>
Sent: Fri, October 15, 2010 1:14:35 PM
Subject: Re: N&W in 1911--Kenova bridge


Jim,

The Railway Age Gazette article that I referred to states, in relation to the 
girders put on top of the piers to support the new trusses outside of the old 
trusses, "The girders are necessarily very deep, and as there was to be 
practically no change in grade on the bridge [emphasis mine], it was necessary 
to cut off the tops of the old piers to provide clearance for the girders below 
the bottoms of the trusses."

The station was on the approach viaduct near the east end of the bridge, and 
there was a change in grade on this viaduct when the new bridge was built, but 
not enough to put it on a different level of the station.  The same article 
states, "It was desired to reduce the grade of this viaduct approach from 0.5 to 
0.3 percent by raising the east end of the viaduct about 5 ft., and the 
remainder of it by correspondingly lesser amounts, reaching the old grade line 
about over the second pier of the bridge."  If the grade line on the new bridge 
had been higher than the grade line on the old bridge that would have increased 
the grade on the approach viaduct instead of reducing it.

The Railway Age Gazette article is quite interesting, and I recommend it to 
anyone interested in how such things were done a century ago.

Gordon Hamilton
----- Original Message ----- 

>From: NW Mailing List 

>To: NW Mailing List 

>Sent: Friday, October 15, 2010 10:36 AM

>Subject: Re: N&W in 1911--Kenova bridge

>

>

>Oh, but the rails WERE raised, Gordon. That is why the upper (open air) waiting 

>area of the station was below track level after the new bridge and viaduct were 

>built. I have my father's word on this. His first job was at Kenova in 1914.    

>Jim Nichols

>

>

>

>

________________________________
  

>------

>>

>>[  The new truss bridge was built around the old truss bridge, but the old piers 

>>were retained, although shortened to accommodate the heaver members of the new 

>>bridge while keeping the rail at the same level as previously.  For more details 

>>on the bridge replacement, see the interesting article in Railway Age Gazette, 

>>Vol. 55, Sep. 5, 1913, p. 407, at Google Books.]

>>

>>

>>Gordon Hamilton

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