These are still around here in Hampton, NH. This road was all Mercury when I was a kid coming here, but since the ban, HPS has creeped into this road so know there is a mercury/HPS mix.
I counted how many mercury vapor street lights there were on Mt. Royal Blvd in Shaler Township, PA at one time, there were 27 of them 10 years earlier and now there's only 6 of them left.