[MIPS]

Incandescent was rapidly phased out in streetlights as soon as mercury vapor, fluorescent and low pressure sodium became viable (around the 50's and 60's) as all three consumed considerably less power per luminous watt and lasted far longer than an incandescent bulb. Once High pressure sodium and metal halide lamps were introduced in the 70's fluorescent and a lot of mercury vapor was converted as both became the least efficient street lighting technologies. By the 80's Fluorescent, MV, LPS, HPS and HID were the primary exterior and street lighting technologies and Incandescent was long out of use for street lights.
The LED was technologically impossible to make in white until the invention of the blue LED in the 90's.
The white LED wasn't commercially viable until the late 2000's. LED's powerful enough and long lasting enough to survive in a street light didn't appear in volume until the 2010's, around which time almost everywhere had phased out fluorescent and mercury vapor had been banned in new installations along with the sale of replacement bulbs. Low pressure sodium went End of Life gracefully when Philips stopped manufacturing new bulbs and metal halide has been gradually replaced with LED.