California Highways: Route by Route

California Highways: Route by Route

California Highways: Route by Route is a podcast exploring California's state (and county) highway system, starting with the history and proceeding route by route through all highways in the state.

Episodes

April 6, 2025 41 mins

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 i...

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Episode 3.08 continues our exploration of I-5 with a slight digression: A discussion about I-5W. In the late 1950s, I-5W was proposed as a spur route from I-5 running along what is today Route 132, I-580 (both the Tracy Diagonal and the former US 50 portion between the I-205/I-580 junction and Oakland/Berkeley), I-80 between Berkeley and near Vacaville, and I-505 between Vacaville and I-5. This short episode explores these pieces a...

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February 9, 2025 59 mins

Next up in our exploration of I-5: the segment between the I-5 / Route 99 split and where I-5 meets former US 99W (now Route 113) in Woodland. Generally known as the "Westside Highway", this was mostly a completely new routing for I-5 along LRN 238, although some portions paralleled former US 50 between Stockton and Sacramento, and Sign Route 16 between Sacramento and near Route 113 in Woodland/Yolo.  As usual, we cover the history...

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Our I-5 exploration continues, with a focus on the segment of I-5 from the US 101 split in Downtown Los Angeles to the Route 99 split in Wheeler Ridge. This episode, Part 2 of 3.06, completes the history from Part 1 with a detailed dive into the history of the Ridge Route. After that, we discuss major projects in this segment of I-5, as well as historical and memorial names. This includes our second deep dive into the history of th...

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Our I-5 exploration continues, with a focus on the segment of I-5 from the US 101 split in Downtown Los Angeles to the Route 99 split in Wheeler Ridge. This episode, Part 1 of 3.06, after a recap on LRN 5 and Sign Route 5, focuses on the history of I-5 from Downtown LA (DTLA) to and through the Newhall Pass. We explore the history of LRN 4 and LRN 161, the timeline of freeway construction to and through Burbank, the history of Rout...

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In this episode, we continue our exploration of I-5, the central spine of California. We're splitting the discussion over 6 episodes, some of which are two-parters. This first episode (a two-parter) looks at the former US 101 segment, from the Mexico Border to Downtown Los Angeles. Part 2, this part, looks at the projects along this segment of I-5, as well as some of the more significant names. Go back to part 1 for a discussion of...

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In this episode, we start our exploration of I-5, the central spine of California. We're splitting the discussion over 6 episodes, some of which are two-parters. This first episode (a two-parter) looks at the former US 101 segment, from the Mexico Border to Downtown Los Angeles. Part 1, this part, starts with a discussion of all things 5: Maritime Highway M-5, the 5th state highway, Legislative Route 5, Sign Route 5, and then I-5. ...

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November 29, 2024 36 mins

In this episode, we complete our exploration of Route 4, covering the segments from Stockton and Route 99 through Angels Camp, and then on over the Sierras to Route 89 near Markleville. This includes segments that go through Gold Country, as well as the Ebbetts Pass segment that includes some very steep grades. Along the way, we look at the history of the route in these areas, projects along the way, and naming of the route. As alw...

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November 9, 2024 58 mins

In this episode, we continue our a 3-part exploration of Route 4. This episode focused on the Stockton Crosstown Freeway: A short freeway segment of Route 4 that bisects the city of Stockton, essentially running from I-5 to Route 99. We talk about the LRNs that made up this segment: LRN 75, and LRN 24. We spend much of the episode talking about the impact the construction of the route had on Stockton, including an interview with Dr...

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October 20, 2024 42 mins

In this episode, we commence a 3-part exploration of Route 4. This episode starts with all things Route 4: The 4th state route, DOH and Legislative Route 4, and pre-1964 Route 4, finally setting on today’s Route 4. We talk about the LRNs that make up today’s Route 4: LRN 106, LRN 75, and LRN 24. We focus on the first segment of the route, from I-80 in Hercules to I-5 in Stockton. We talk about Route 4 in cities such as Hercules, M...

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Welcome to Season 3 of California Highways: Route by Route. We promised that the season would start in September, and we're making it by the wire. Season 3 covers Routes 3 through 7; this is the first episode covering Route 3, which is in Northwest California near Weaverville and Route 299. In this episode, we talk about all things "three": The third state route, Legislative Route 3, Sign Route 3, and finally the current Route 3. F...

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August 14, 2024 51 mins

As promised, we had one more bonus episode to tide you over during the break between Season 2 and Season 3. In this episode, we explore the auto trails that were in California before we started having signed numbered highways. Auto Trails discussed include (a) trails that are maintained today—El Camino Real, De Anza Trail, Volcanic Legacy Scenic Byway, and the Pony Express National Historic Trail. We spends most of the time on the ...

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As promised, here are a few bonus episodes to tide you over during the break between Season 2 and Season 3. In this episode, we have the second half of an interview with Joe Rouse of Caltrans, talking about HOV Lanes, Express/Toll Lanes and Bridges, and Fastrak. The first part was in Episode 2.13. There is one more bonus episodes in the pipeline: Episode 2.15 will explore auto trails. Regular episodes should resume around September...

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As promised, here are a few bonus episodes to tide you over during the break between Season 2 and Season 3. In this episode, we have the first half of an interview with Joe Rouse of Caltrans, talking about HOV Lanes, Express/Toll Lanes and Bridges, and Fastrak. There are two more bonus episodes in the pipeline. Episode 2.14 will be the second part of this interview, and Episode 2.15 will explore auto trails. Regular episodes should...

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Episode 2.12 of California Highways: Route by Route is the second of two episodes on Route 2. In this episode, we complete our exploration of Route 2. This time, we focus on the segments in Glendale and through the Angeles National Forest, roughly from US 101 to Route 138. We talk about the pre-freeway routing, the history of the Glendale Freeway, the proposals for an Angeles Forest Freeway, and the history of Angeles Crest Highway...

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Episode 2.11 of California Highways: Route by Route is the first of two episodes on Route 2. In this episode we explore the general history of all things Route 2: What was the second state route defined; what was legislative route (LRN) 2, what was Sign Route 2, and what is today's Route 2. We focus on the flatland segment: From Santa Monica to the Glendale Freeway. We do a detailed exploration of the relationship of the Pacifi...

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Episode 2.10 of California Highways: Route by Route completes our exploration of Route 1, as we discuss the "Lost Coast". This area was originally part of the last segment of LRN 56, and was to be Route 1, but some reworking of the state system made the former lateral between Usal Road and US 101 (which in 1964 became Route 208) officially Route 1, and made the "Lost Coast" portion of the route Route 211. This ...

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February 25, 2024 37 mins

Episode 2.09 of California Highways: Route by Route continues our exploration of Route 1, as we complete discussing present-day Route 1 in Medocino County from Gualala to Leggett and current Route 1's end at US 101. Along the way, we'll discuss the communities of Gualala, Point Arena, Albion, Mendocino, Fort Bragg, Westport and Rockport, and Leggett. As always, we'll cover the history of the route, and some current proj...

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February 10, 2024 33 mins

Episode 2.08 of California Highways: Route by Route continues our exploration of Route 1. We've now crossed the Golden Gate Bridge, and are continuing north from the Marin Headlands, up along the coast through Sausalito and Marin, Muir Beach and Stinson Beach, Point Reyes, Bodega Bay, Jenner and Fort Ross until we reach the Marin Headlands. As always, we'll cover the history of the route, and some current projects along the...

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Episode 2.07 of California Highways: Route by Route continues our exploration of Route 1 by exploring an interesting gap in the route: The Golden Gate Bridge (GGB). The GGB is not part of the state highway system, and thus (from the point of view of the state) not part of either Route 1 or US 101. It is part of US 101 per AASHTO, and is run by its own district. We'll cover what was there before the bridge, the construction of t...

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