There are two lights here that are like that too, except they totally closed the section of road and bypassed it with a new freeway, I'd be willing to bet the PCs still turn the lights on every night, even though the lamps and likely ballasts are long dead Here they are there is a R47 and OVZ.
There's a couple of B2255s like that too, they recently bypassed a country road with a 4 lane arterial but parts of the closed section and now the Powerlites are over a patch of grass.