Photo taken by Mike
License: Creative Commons Attribution-NoDerivs (CC BY-ND)
View this photo on Flickr
BH Photo #244792
The arch is just a few hundred feet west of route 7 behind the big Leasco building....I first noticed it several years ago and thought it had something to do with the railroad.....
I got the coordinates from the geotag on the Flickr page. They're way off, but I could not find it in bing bird's eye either.
How did you deduce the location on the map?