Episode 4.04 is our second episode exploring Route 9, which in its post-1964 version runs from Santa Cruz to Saratoga and Los Gatos. Before 1964, Route 9 continued N up to the Mountain View area, and then across to Milpitas, and up to the Castro Valley. The previous episode covered post-1964 Route 9 (and the first segment of pre-1964 Sign Route 9) from Santa Cruz to Saratoga and then into Los Gatos, as well as all the 9th State Route and LRN 9. This episode (4.04) covers the pre-1964 Route 9 portions N of Saratoga: Sign Route 9 through Mountain View, Milpitas, and up through Hayward and the Castro Valley. This portion of Sign Route 9 became Route 85, Route 237, Route 17/I-880/I-680 (in portions) and Route 238. The next pair of episodes will be covering I-10, with episode 4.05 covering the Santa Monica Freeway portion, and episode 4.06 covering the San Bernardino Freeway portion.
Here’s the link to the show:
And here’s the link on Spotify for Creators:
Here are some relevant links (I may edit this to add more links in later):
- California Highways:
- Gribblenation Blogs:
- California State Route 9
- California State Route 85
- California State Route 237 Southbay Freeway
- California State Route 262
- Legacy California State Route 17; CA 13 (i), CA 17, the Nimitz Freeway, I–880, the Richmond-San Rafael Bridge, and I–580
- Interstate 238; the Interstate numbering abomination carved out of an otherwise mundane State Highway
- Interstate 680 over the Benicia-Martinez Bridge and the legacy of California State 21
- Other Links:
- California @ AARoads (Andy Field):
- Casey Cooper:
- Route 238: Hayward Bypass Proposal
We encourage you to explore our back catalog through this site or our Spotify for Creators home.

