Yeah, it's the sunset highway, but I rarely hear anyone call it that (I've lived in Beaverton for 2 decades).
Here in SoCal, google maps is amazing at always picking exactly the opposite of name/vs number from what locals use for reading out directions (I didn't know X road even had a number, why are they calling the 192 Y road?).
It seems the rule where I am is "always show the number" which means indeed they've very good at picking the opposite.