California state route 380 from Interstate 280 to California state route 1?

[ACSCmapcollector]

California state route 380 from Interstate 280 to California state route 1?

I wonder why the reason that California state route 380 wasn't even built from Interstate 280 to California state route 1, as a freeway, opposition, cancelling by Caltrans or some other reason?

Scott C. Presnal
Morro Bay, CA

[TheStranger]

http://www.cahighways.org/305-440.html#380