Bridge Builder's Plate Question

[NW Mailing List]

 Here is a photo showing the builder's plate on High Bridge.  Can anyone
tell me what the "N59D" in the lower right corner means?  I went back and
looked at other builder's plates that I've photographed and none of them
have a similar marking.

Jeff Hawkins

*www.railsinvirginia.com* <http://www.railsinvirginia.com>
*www.railfirephotography.com* <http://www.railfirephotography.com>

Moderator:
 http://nwhs.org/mailinglist/2014/20141014_MG_0996-V2.jpg
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