One of the longest running construction styles of CL&P to date, which began in the early 1980's with 15kV-rated Hendrix polymer insulators, though they didn't become widespread until between 1995-2000. I don't think this pole had any transformers until just few years ago.

Note the line in the background, which follows U.S. 7, once had mix-and-match of 1950's-90's style crossarm constructions and then the WHOLE line was replaced exactly 10 years ago with more modern CL&P constructions all the way through, turning it into a generic line. :(

Source: Google Maps