NS - Nicholson Tunnel
Photo taken by Eli Wilson in 2018
View this photo on Flickr
BH Photo #447186
Geoff,when they built these towers they were built to last so I would guess it's still there.
Yes that was an interlocking tower. Since these DL&W ones were reinforced concrete, it's likely still standing.
Thanks,Geoff.Is that a rail traffic tower in the picture I see which looks abandoned?