A few weeks back, I found myself wandering around in the area of Orleans, Indiana and was quite pleasantly surprised to see a couple of semaphores still standing.
A little bit of Google research revealed that this is part of the former Monon line, and was active as recently as 2009 although there is no current active service here. Google Earth shows cars stored along this track, including near where I picture below, although I was too distracted by the signal itself to notice.
Although these are not currently in service, it was exciting for me to see these 100-year old installations still in place and not that long out of service.
I apologize for the poor quality of the photo, as it was taken with my Iphone through a car window. I will try to make it back up that way with a better camera at some point.