CA RxR 5.01: I-15 (Part 1): South of Temecula

Welcome to Season 5. We start the season with three episodes covering Route 15. The first (this episode), covers LRN 15, Sign Route 15, and today’s Route 15 between San Diego and Temecula. LRN 15 ran from what is now Route 1 near Fort Bragg to what is today’s I-80 near Emigrant Gap; it is today’s Route 20. Sign Route 15 is what became Route 7 and later I-710, and is today’s Long Beach Freeway. We have some interesting exploration of the ends of Sign Route 15 in Pasadena and Long Beach. We then turn to the main focus of the episode: Route 15, which runs from San Diego to the Nevada border, and has a complicated history. So complicated, in fact, that this episode focuses only on the portion between San Diego and Temecula, exploring both former Route 103 and US 395, as well as the transition from US 395 to today’s I-15 routing. Episode 5.02 will cover Temecula to Devore, and explore the history of I-15, I-15E, I-215, Route 71, US 91, US 395, and Route 194. Lastly, Episode 5.03 will cover Devore to Nevada, including I-15, US 395, US 66, US 91, and US 466 (with a bit of Route 195 and US 95 thrown in).

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:
  • LRN 15:
    • LRN 15
    • Route 20
  • Sign Route 15:
    • LRN 167
    • Sign Route 15
    • Route 7, I-710
    • Long Beach: LRN 231, Route 47, Route 103
  • Route 15/I-15:
    • LRN 77, LRN 283
    • Route 103
    • Route 163
    • US 395
    • Route 15, I-15
    • Route 71, Route 79
    • San Diego CR S13, S14
• Gribblenation Blogs:
  • California State Route 15
  • California State Route 163; Old US Route 80/395 on the Cabrillo Freeway
  • The Terminal Island Freeway (California State Route 103 and California State Route 47)
• Other Links:
  • Casey Cooper: Finding US 395
  • AARoads:
    • Interstate 15
    • Business Loop I–15 – Escondido

We encourage you to explore our back catalog through this site or our Spotify for Creators home.