The second of five routes yesterday was CA 227 from San Luis Obispo to Arroyo Grande, got the photo album up:
https://flic.kr/s/aHsmh8NSfG
Finishing looking into CA 227 and LRN 147. The north terminus made much more sense when it met US 101 on Broad Street in San Luis Obispo. There is no real logical way for the modern routing of CA 227 to meet US 101 on it's current freeway alignment. That would certainly explain why CA 227 takes a series of weird turns through the city.
http://surewhynotnow.blogspot.com/2018/04/california-state-route-227.html