Episode 4.03 starts a pair of episodes that explore 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. This episode (4.03) covers the current Route 9 from Santa Cruz to Los Gatos; the next episode (4.04) covers the remainder of pre-1964 Sign Route 9 through Mountain View, Milpitas, and up through Hayward and the Castro Valley. This episode also explores the 9th State Route between Peanut and Kuntz (now Mad River), and LRN 9. LRN 9 ran all the way from Ventura to San Bernardino, and was Sign Route 118 from Ventura to Pasadena, and US 66 from Pasadena to San Bernardino. As always, we'll talk about historical routings, projects along the route, and some significant names. As noted, the next episode explores the remainder of pre-1964 Sign Route 9 from Saratoga through Milpitas to the Castro Valley.

For more information, and for additional links, see this episodes page at this podcasts forever home on CARouteByRoute.org.

This is Episode 4.02, which continues our exploration of Route 8, better known as Interstate 8. In this episode, we focus on the portion of I-8 from La Mesa (just outside of San Diego) to the Arizona border. We look at not only current I-8, but the routing of the predecessor route, US 80. We discuss the communities of La Mesa and El Cajon, Alpine and Descanso, Boulevard, the Mountain Springs Grade, Jacumba, Ocatillo (with a digression on the Imperial Highway), El Centro, Holtville and the Algondenes Dunes (with a digression on the Plank Road), Winterhaven and Yuma. We also briefly talk about the interesting routing of US 80 within Arizona, and how it differs from I-8. We talk about historical routings, projects along the route, and some significant names. In the next episode, we’ll turn our attention to Route 9, which currently runs from Santa Cruz to Los Gatos, but which once ran all the way to Castro Valley.

For more information and additional links, see the episode's page at the show's forever home on CARouteByRoute.org.

Welcome to Season 4 of CA Highways: Route by Route. Episode 4.01 is the first half of our exploration of Route 8. This episode covers the 8th State Highway, which became LRN 36 and later Route 194. It covers LRN 8, which ran from Ignacio (Novato) to Cordelia via Napa, and became parts of Route 37, Route 121, Route 12, and Route 29. We look at Sign Route 8, which became today's Route 26. And lastly, we look at I-8 in San Diego, including its historical ancestor US 80. This includes former Route 209 to Point Loma, which was part of LRN 12 and possibly US 80, and former Route 109, which became the portion of Route 8 W of I-5 (and you'll learn why that is not I-8). Episode 4.02 will pick up the story and explore the rest of I-8/US 80 between San Diego and the Arizona Border, including a discussion of the Imperial Highway.

For more information, including additional links, visit the Episode 4.01 page on CARouteByRoute.org

A New Year's Gift for you: Our last Bonus Episode of Season 3. Episode 3.15 features an interview with Claire Kennedy, Archivist for the Los Angeles Metropolitan Transportation Agency (LA Metro). In this role, Claire manages the LA Metro Archives, which date back to the 1800s and the earliest horse-drawn transportation in the city. These archives cover not only the wide variety of transit agencies in Los Angeles, but also the highway and road system as Metro is the Regional Transportation Agency. These archives are a public resource, and are open by appointment; information on how to make an appointment is in the podcast (and below). Note that we had some trouble with Zencastr this episode; we fell back to FreeConferenceCall.com. We'll pick up in the October with Season 4, which will cover Route 8 through Route 14.For more details and additional links, see the episode's page on CARouteByRoute.org

Bonus Episode 3.14 continues our inter-season gap between Seasons 3 and 4. This episode we're sharing an episode of the excellent Freeway Exit podcast from KPBS San Diego. Freeway Exit, hosted by Andrew Bowen, is an exploration of San Diego's freeways, their costs, and how they can be part of the solution. It covers the forgotten history of the urban freeway network, and how decades after that network was finished, some communities are still working to heal the wounds that freeways left behind. The episode we've chosen to share focuses on the Cabrillo Freeway, Route 163, through Balboa Park, and explores the question: Is it time to remove the freeway? After the episode, we have a discussion with Andrew about the podcast, the the San Diego freeway system, and how highways fit into the bigger picture. Oh, and we discover what he is doing next with the podcast, and try to convince him to do one on the Route 710 gap. This episode is also a test of using Zencaster to record the podcast. Hopefully it sounds better, and next time I'll move my microphone a bit further back. Zencaster also gives us the ability to have transcripts. Would folks want them included in the post? One more bonus episode is in the works: An interview with the LA Metro Archivist. We'll pick up in the October with Season 4, which will cover Route 8 through Route 14.  PS: Support KPBS, or your local PBS/NPR StationFor more details and additional links, see the episode's page on the show's forever home: CARouteByRoute

Episode 3.13 is our first bonus episode, bridging the gap while we write Season 4. This bonus episode is a presentation that our co-host, Tom Fearer, gave at the Fresno Flats museum back in May 2025. The presentation focuses on the highways of the Oakhurst area, and was described as: "Since the establishment of the Stockton-Los Angeles Road in 1853 the Sierra Nevada foothills of what is now Madera County has been a hub of highway development. Much of the existing infrastructure in the area was established by the late 1880s with the plotting of the Fresno-Fresno Flats Road and Yosemite Stage Road. The area was of great interest during the early State Highway era due to the desirable access it could provide for logging interests and automotive based recreational travel to Yosemite National Park. Even Minaret Summit was briefly considered for a proposed extension of Interstate 70 into California before the era of environmental impact assessment began.” We'll pick up in the fall with Season 4, which will cover Route 8 through Route 14. I'm also looking into better software for recording the podcast: In particular, does anyone have opinions on Zencaster, Riverside, or Squadcast?

For more information, visit the episode's page at the show's forever home on CARoutebyRoute.org.

Episode 3.12 brings Season 3 to a close, modulo our bonus episodes. In Episode 3.12, we explore all things Route 7. As is our tradition, we start by looking into the 7th state highway, the Kings River Canyon Road, and LRN 7, which included portions of US 40 and US 99W. We then turn our attention to various incarnations of Route 7: Sign Route 7, both the section along the Eastern Sierras that is now US 395 and US 6 and the section that became Sepulveda Blvd in Los Angeles; 1964-1981 Route 7, which was the Long Beach Freeway before it was renumbered into I-710; and the current Route 7, which is a small border connection route near a new entry point near Calexico. We'll then be taking a short break, during which there will be some bonus episodes. We'll pick up in the fall with Season 4, which will cover Route 8 through Route 14. I'm also going to be working on improving the sound quality of the podcast once I retire in July.For more information, and for links related to the routes mentioned in the episode, visit this episode's page at our forever home, caroutebyroute.org

With Episode 3.11, we turn our attention to Route 6, better known as US 6. As is our tradition, we start by looking into the 6th state highway, and the LRN 6, and then the route that was originally signed as Sign Route 6. We then turn our attention to US 6, looking at the history of the route, and the historical routings in Long Beach, Los Angeles, Newhall, the Antelope Valley, the Eastern Sierras, and Bishop. We also talk about El Camino Sierra, the Midland Trail, and the proposals for trans-Sierra highways that would have included US 6. Lastly, we look at US 6 today: the portion between Bishop and the Nevada State line. Next up: The last episode of Season 3, where we talk about Route 7: both the current short route near the border, and the more interesting historical routings of LRN 7, Sign Route 7, and the original 1964 Route 7.

For more information and additional links, visit the episode's page at its forever home: https://caroutebyroute.org/2025/05/23/ca-rxr-3-11-us-6-a-major-route-no-more/

Episode 3.10 completes our exploration of I-5, looking at the segment that was former US 99, LRN 3, between Red Bluff and the Oregon Border. Along the way, we visit Red Bluff, Anderson and Redding, the Lake Shasta Area, Dunsmuir, Mt. Shasta, Weed, Yreka, and run into a California Agricultural Inspector who was trapped in a bottle by a witch. Our next episode will move us to the next highway, looking at US 6 and all things Route 6 in California.

For more information and additional link, visit the episode's page at the Podcast's forever home, caroutebyroute.org

Episode 3.09 continues our exploration of I-5 with the segment from Sacramento to Red Bluff, which primarily incorporates the former LRN 7 / US 99W routing between Woodland and Red Bluff, and a new routing that roughly followed LRN 238, then LRN 50 and LRN 232 between Sacramento and Woodland (near former Sign Route 16 and Sign Route 24). We talk about this history of this segment, as well as some discussion of historical routings in Natomas, Woodland, Williams, Willows, Corning, and Red Bluff. Our exploration of I-5 finishes in Episode 3.10, where we explore the former LRN 3/US 99 segment between Red Bluff and the Oregon Border.

For more information and links, see the episode's page at our show's forever home at CARouteByRoute.org.