I mentioned this over in the Pacific Southwest board (where I hang out), but I figured there might be broader interest. Tom Fearer (Max R. here) and I have started a podcast on California Highways. The first season will be background on the highway system, and then we'll go route by route through every numbered highway in the state.
Please spread the word. You can find the podcast at its forever home at https://www.caroutebyroute.org/ , on anchor.fm at https://anchor.fm/caroutebyroute, or in almost any podcaster app or directory (Apple Music, iTunes, Amazon, Google, Spotify, Stitcher, etc.). I'd love to get the listenership up for the first episode before I release the second episode next weekend.
If you want to get an idea what we are talking about, here's the outline for the first two seasons:
Season 0
Teaser (https://caroutebyroute.org/2022/04/16/well-we-did-it-the-teaser-episode-is-up/)
Sample Route Episode: Route 105: It Only Takes a Century (https://caroutebyroute.org/2022/05/28/episode-0-02-route-105-it-only-takes-a-century-sample-episode/)
Season 1
Building a State Highway System: Before 1920 — Building a State Highway System (https://caroutebyroute.org/2022/07/18/episode-1-01-before-1920-building-a-state-highway-system/)
Building a State Highway System: The 1920s
Building a State Highway System: The 1930s
Building a State Highway System: Expanding the System
Building a State Highway System: The Great Renumbering and New Freeways
Building a State Highway System: CEPA and Reality
Highway Numbering: State Highways
Highway Numbering: US Highways
Highway Numbering: Interstates
Highway Numbering: County Routes
The Naming of Highways
The Organizations of State Highways
Season 2
Route 1: Orange County
Route 1: Los Angeles County
Route 1: Ventura and Santa Barbara Counties
Route 1: SLO and Big Sur
Route 1: Monterey and Santa Cruz
Route 1; The South Bay and San Francisco
Route 1: The Golden Gate Bridge
Route 1: Marin and ...
Route 1: The Redwood Forest
Route 1: The Lost Coast (incl. Route 208 and Route 211)
Route 2: Santa Monica and Los Angeles
Route 2: Angeles National Forest
I now return you to your other general discussions.
Much of the Season 1 podcasts contain information that is more of general interest. Some examples from current recording include discussion about the Good Roads Movement, Auto Trails, US Route System and Federal Aid programs.