The abutment you are showing is the CNE. They had a bridge across the hollow, which New Hartford center sits in. The Canal and CNE (Connecticut Western) both tan through the gorge at Satan’s Kingdom. CW/CNE was on the north shore of the Farmington River, but crossed to the south, and next to the Canal. The Canal line and CNE ran parallel through Pine Meadow, with the Canal on the east side of the ROW. Since the Canal bridge across Route 44, and the river is east of the location of the photo, the canal crossed the CNE, but it was through a crossover, not a diamond, which was by Pine Meadow Station.
After New Haven took over CNE, and CNE traffic started to diminish, Hartford bound CNE trains were rerouted to the Canal, via Plainville. After this point, a little CNE was used in Simsbury, which served a customer. The other remainder was the line between Hartford and Griffins.
There was a 3 volume set of CNE books, and they came out in the 1990s, by Robert Nikki. If you find a set, it is useful because many track diagrams are included. Being from Plainville, my family used to drive through here frequently. I also traced out the CNE one summer with my uncle.