Episode Guide
This is a guide to the planned episodes of California Highways: Route by Route. Seasons are roughly 12 episodes one (1/month); we might have more in a season with bonus or extra episodes. Routes, unless noted otherwise, are based on the post-1964 routes.
Season 0
- Teaser
- Sample Route Episode: Route 105: It Only Takes a Century
Season 1
- Building a State Highway System: 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: CEQA and Reality
- Highway Numbering: State Highways
- Highway Numbering: US Highways (Part 1); Interview with Jim McDonnell of AASHTO (Part 2)
- 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
Season 3
- Route 3: Through the Mountains of Jefferson
- Route 4: Hercules to Stockton
- Route 4: Stockton
- Route 4: The Sierras
- I-5: San Diego to Los Angeles
- I-5: Whatever Became of the Ridge Route?
- I-5: The Central Valley
- I-5: Whatever Happened to I-5W
- I-5: Former US 99W
- I-5: Gateway to Oregon
- US 6: A Major Route no More: Los Angeles to Bishop
- Route 7: From Long Beach to the Border
Season 4
- I-8, Former Route 109, LRN 286: The Southern Route and US 80 (Part 1)
- I-8, Former Route 109, LRN 286: The Southern Route and US 80 (Part 2)
- Route 9: Santa Cruz and Saratoga
- Route 9: The once great Route 9 no more
- I-10: Santa Monica Freeway
- I-10: San Bernardino Freeway
- Route 11: From Pasadena to the Border
- Route 12: Sonoma and Napa
- Route 12: Crossing the Wetlands
- Route 12: Into the Sierras
- Route 13: Oakland and Berkeley
- Route 14, Route 64, LRN 290: The Valley Freeways that Never Happened
- Route 14: The Antelope Valley Freeway
Season 5
- I-15: South of Riverside
- I-15 and Route 31: North of Riverside
- Route 16: W of Sacramento
- Route 17: A Shadow of Its Former Self
- Route 18: What Once Was
- Route 18: Lake Arrowhead and the High Desert
- Route 19: Lakewood to Pasadena, but not for much longer
- Route 20: Willits to US 101
- Route 20: US 101 to I-80
- Former Route 21: I-680 and the North Bay
- Route 22: The Garden Grove Freeway
- Route 23: Decker Canyon to Moorpark
Season 6
- Route 24: East Bay and the Caldecott Tunnels
- Route 25: San Benito
- Pre-1964 Sign Route 26: The Bolsa Avenue original and forerunner of the Santa Monica Freeway
- Route 26: Stockton to the Sierras
- Route 27: Topanga Canyon Blvd
- Route 28: Lake Tahoe
- Route 29: Napa and Lakeport
- Former Route 30 and Route 106: The Once and Former Foothill Freeway
- Route 32: Chico not Chicko
- Route 33: US 399 and Ojai
- Route 33: West of the Westly
- Route 33: I’m sure we’ll have one more
Season 7
- Route 34: Somis and Oxnard
- Route 35: Skyline Blvd – Former Route 5
- Route 36: The Shasta and Lassen Backbone
- Route 37: Climate Change in Action
- Route 38: Big Bear
- Route 39: Orange County and Knotts Berry Farm
- Route 39: Will It Ever Open
- I-40: You Would Expect Much More
- Route 41 and Route 46 and US 466: A Tangle in SLO
- Route 41: The Fresno Freeway and Yosemite
- Former Route 42 and the start of the Century Freeway
- Route 43: Across the Central Valley
Season 8
- Route 44: The Lassen Scenic Highway
- Route 45: The long run along the Sacramento River
- Route 46: Farmworkers and James Dean
- Route 47 and Route 103: Terminal Island
- US 48: The forgotten US route in California
- Route 48: High Desert Corridors
- Route 49: The Sierra Foothills
- Route 49: The Gold Rush Route
- US 50: What Once Was W of the Sacramento River
- US 50: Sacramento to Placerville
- US 50: Placerville to Lake Tahoe
- Route 51: The Phantom Route that only ever shows up news broadcasts
Season 9
- Route 52, LRN 279: Remember San Diego and La Jolla
- Route 53: Lake County
- Route 54: The South San Diego Loop that Wasn’t
- Route 55: The Newport Freeway
- Route 56, LRN 278: More La Jolla
- Route 57, Route 250, LRN 272: The Orange Freeway and I-210
- Route 58: US 101 to Bakersfield and Harris Ranch
- Route 58: What Could Be I-40
- Route 59: Snelling
- Route 60: The Saga of US 60 (incl. Route 212)
- Route 60: Railroad Canyon
- Route 61, Route 112, and Route 260: The big happy Route 61 family in Oakland and Alameda
Season 10
- Route 62: It’s Hot in the Desert
- Route 63, Former Route 226: Central Valley
- Route 64: The Whitnall Freeway and Unconstructed Routes
- Route 65: The Easterly Bypass that Wasn’t
- Route 65: Lincoln and US 99E
- US 66: Where Did It End?
- US 66, Route 248: The Routings in the Foothills
- Route 66: What Remains Today
- US 66: The Cajon Pass, Perth, and Amboy
- Route 67: The Ramona Road
- Route 68: Salinas to Monterey
- Route 69/Route 245: Nice…Why Do You Think They Renumbered It?
Season 11
- US 70: You’ll Never Run Alone
- Route 70: The Quincy Highway
- Former Route 71, LRN 271: The Forerunner of US 395
- Route 71: The Corona Freeway
- Route 72: Whittier Blvd and former US 101
- Route 73: The San Joaquin Hills Toll Corridor
- Route 74: Ortega Highway
- Route 74: The Palm to Pines Highway
- Route 75: The Silver Strand
- Route 76: Oceanside
- Route 77: Oakland
- Route 78: Carlsbad, Escondido and Ramona
- Route 78: Ramona to the Salton Sea
Season 12
- Route 79: Julian to Temecula
- I-80: San Francisco and the Bay Bridge
- I-80: The Freeway System that Never Was
- I-80: San Francisco to Sacramento
- I-80: The Sacramento Freeway System
- I-80: Sacramento to Lake Tahoe and Donner Pass
- US 80: What I-8 missed
- Former Route 81: The San Bernardino and Riverside Bypass
- Route 82: The El Camino
- Route 83: R3 to Ontario
- Route 84: The South Bay
- Route 84: The Dunbarton Bridge
Season 13
- Route 84: Fremont Freeways that Never Were
- Route 84: Fremont to Livermore
- Route 84: The Mid State Tollway
- Route 84: The Delta and Sacramento
- Route 85: The West Valley Freeway
- Route 86, Former Route 228: The Salton Sea, Calexico, and US 99
- Route 87, LRN 292: The Guadalupe Parkway
- Route 88: The Stockton to Sierra Pass
- Route 89: Mono County to Lake Tahoe
- Route 89: Lake Tahoe to Lassen
- Route 90: Richard Nixon: Part 1
- Route 90: Richard Nixon: Part 2
- Wild Card Episode: Route 168 and the Piute Pass Highway
Season 14
- Route 91: The Artesia Freeway and US 91 (incl Route 214)
- Route 91: The Riverside Freeway and US 91
- US 91: Riverside to Vegas
- Route 92: Half Moon Bay, the San Mateo Bridge, and Hayward
- Route 93: What East Bay Bypass?
- Route 94: San Diego to Jacumba
- US 95: History in the Desert
- Route 96: Shasta and Klamath
- US 97: A key route in Northern California
- Route 98: The southernmost state route
- Route 100, LRN 287: Unconstructed Santa Cruz Loop
- Teaser: The Season of 99
Season 15: The Season of 99
- Former Route 99: Mexico and the Stockton Sea
- Former Route 99: Route 99 through San Bernardino and Redlands
- Former Route 99: Through Los Angeles
- Former Route 99: Ridge Route Variations
- Route 99: South of Bakersfield
- Route 99: Bakersfield through Modesto
- Route 99: Modesto to Sacramento
- Route 99: Route 99E
- Former Route 99: Route 99W to Red Bluff
- Former Route 99: Red Bluff to Oregon
- Route 99: What We Missed
- Teaser: The Season of 101
Season 16: The Season of 101
- Former US 101: San Diego County
- Former US 101: Orange County
- Former US 101: Los Angeles County
- Former US 101A: Los Angeles County
- US 101: Los Angeles and Ventura County
- US 101: Santa Barbara and SLO
- US 101: San Benito and Monterey
- US 101: The San Francisco Bay Area
- US 101: San Francisco
- US 101: The Golden Gate Bridge
- US 101: The Marin and Sonoma Regions
- US 101: The Redwood Forests
- US 101: Far Northern California
Season 17
- Route 102 / Route 143 / Route 148 / Route 244 / LRN 288: Unbuilt Sacramento Area Routings
- Route 103: Terminal Island Freeway
- Route 104: Galt to Gold Country
- Route 105: Seems Like a Century Since We Discussed This
- Route 107: The Hawthorne Freeway that Never Was
- Route 108: Route 5 to Gold Country
- Route 108: Gold Country across the Sierras
- Route 109: What Was in East Palo Alto
- Route 110: The Harbor and Pasadena Freeway
- I-110: The Harbor Freeway
- Former Route 11 and Route 110: The Pasadena Freeway Part 1
- Former Route 11 and Route 110: The Pasadena Freeway Part 2
Season 18
- Route 111: Palm Springs and the Salton Sea
- Route 113: Dixon, Davis, Woodland, and Knights Landing
- Route 114: The Middle Approach to Dunbarton
- Route 115: Imperial County East Roads
- Route 116: Jenner to Schellville
- Route 117: Former Routings
- Route 118: The Ventura Plains
- Route 118: The Simi Freeway
- Route 119: Central Valley: Taft to Greenfield
- Route 120: I-5 to Yosemite
- Route 120: Tioga Pass
- Route 120: Eastern Sierras
Season 19
- Route 121: Sears Point through Napa
- Route 122: Not the Pearblossom Highway
- Route 123: San Pablo Avenue Corridor
- Route 124: Route 88 to Route 16
- Route 125: South Bay Expressway
- Route 126: Santa Paula Freeway
- Route 127: Death Valley
- Route 128: The Original Route 28: Cloverdale to Davis
- Route 129: US 101 to Watsonville
- Route 130: Mt. Hamilton
- Route 131: Tiburon
- Route 132: Tracy to Modesto: Plan it Early
- Route 132: Modesto to Gold Country
Season 20
- Route 133: Laguna Canyon and the Eastern Toll Corridor
- Route 134: The Ventura Freeway
- Route 135: Santa Maria and Vandenberg
- Route 136: North Owens Lake and Route 190
- Route 137: Corcoran to Lindsay
- Route 138: Gorman and the Metropolitan Bypass
- Route 138: Pearblossom Highway
- Route 138: The Road to Big Bear
- Route 139: Susanville to Oregon
- Route 140: Gustine to Yosemite: The Northern Entrance
- Former Route 141: The Curtola Parkway
- Route 142: Carbon Canyon
Season 21
- Route 144, Route 224: Santa Barbara Short Routes
- Route 145: Central Valley – Oilfields to Route 41
- Route 146: Pinnacles National Monument
- Route 147: Lake Alamor Cutoff
- Route 148 and the Capitol Southeast Connector
- Route 149: Connecting Route 70 and Route 99
- Former Route 150: Route 246 Buellton, Solvang
- Former Route 150: Route 154: San Marcos Pass
- Former Route 150: Route 192 Santa Barbara Foothills
- Route 150: Santa Barbara to Ojai
- Route 151: Cutoff to Shasta Dam
- Route 152: Watsonville to Gilroy
Season 22
- Route 152: Pacheco Pass
- Route 156: Castroville to Pacheco Pass
- Route 153, Route 283, : Super Short Routes
- Route 155: Delano to Lake Isabella
- Former Route 157, Former Route 171, Former Route 252, Former Route 274: Unbuilt San Diego Routings
- Route 158: June Lake Loop
- Route 159: A Long Exit Ramp
- Route 160: The Delta and Sacramento
- Route 161: The Border Road
- Route 162: Through the Mendocino National Forest
- Route 163: Former US 395 in San Diego
- Route 164: Pico Rivera and Rio Hondo
Season 23
- Route 165: Los Banos to Turlock
- Route 166: the Cuyama Valley
- Route 167: North Mono Lake
- Route 168: Fresno to Huntington Lake
- Route 168: The Trans-Sierra Route to Bishop that Never Was
- Route 169: Klamath to Weitchpec
- Route 170: The Hollywood Freeway
- Route 172: Mineral to Morgan Summit, former Route 36
- Route 173: Lake Arrowhead and Unpaved Routes
- Route 174: Colfax to Grass Valley
- Route 175: Lake County and Napa
- Former Route 176: Foxen Canyon and Santa Maria
Season 24
- Route 177: Desert Center and the Low Desert
- Route 178: Walker Pass
- Route 178 Route 14 to Nevada:
- Unbuilt Route 179: Vacaville to Winters
- Route 180: Panoche Road and Unconstructed Routings
- Route 180: I-5 to Fresno
- Route 180: Fresno to Kings Canyon NP and Cedar Grove
- Unconstructed Route 181: River Road and Sebastapol
- Route 182: Bridgeport to Nevada
- Route 183: Salinas to Castroville
- Route 184: Weed Patch to Walker Pass
- Route 185: Hayward to Alameda
Season 25
- Route 186 and Route 188: Border Connections
- Route 187: Venice Blvd
- Route 189: Strawberry Peak to Lake Arrowhead
- Route 190; a Trans-Sierra Highway that could have been
- Route 191, LRN 295: The Road to Paradise
- Route 193: Lincoln to Placerville
- Route 195: Mojave Box Canyon and Route 86
- Former Route 196 Route 249, Route 122: Routes in the Sky
- Route 197: The 199 to 101 cutoff
- Route 198: San Lucas to Coalinga
- Route 198: Coallnga to Sequoia National Park
- US 199: A Vital Northwest Corridor
Season 26
- Route 200: The 101 – 299 Cutoff
- Route 201: Kingsburg to Elderwood Lateral
- Route 202: Gateway to a Correctional Institute
- Route 203: Mammoth Mountain
- Route 204: Golden State Highway
- I-205: Tracy Cutoff
- Former Route 206: Connections to I-15
- Route 207: Bear Valley Ski Area
- Former Route 209: Point Loma and San Diego
- Route 210: The Foothill Freeway – West
- Route 210: The Foothill Freeway – East
- Route 213, LRN 291: Western Blvd
Season 27
- Route 215 / Former Route 194: The Once and Former US 395
- Route 215 / Former Route 194: I-15E and I-215
- Route 216: Lemon Cove-Visalia Corridor
- Route 217: the freeway ending at a roundabout at UC Santa Barbara
- Route 218: Canyon Del Rey on the Monterey Peninsula
- Route 219: 99 to 108 via Salida
- Route 220: Fun times on the J-Mack Ferry
- Route 221: Old Route 12 in Napa
- Route 222: The Highway to the Old Mental Health Facility Turned Temple
- Route 223 (LRN 264): Bear Mountain Boulevard
- Route 224: the Highway to Carpinteria State Beach
- Route 225: the Zombie Highway of Santa Barbara
- Route 227: The SLO Loop
Season 28
- Route 229: Santa Margarita to Creston, and the history of US 466
- Route 230, LRN 289: The Bay Bypass
- Route 231, Route 241, and Route 261: The Orange County Toll Roads (Part 1)
- Route 231, Route 241, and Route 261: The Orange County Toll Roads (Part 2)
- Route 231, Route 241, and Route 261: The Orange County Toll Roads (Part 3)
- Route 232, Route 257: Former Freeways in Oxnard
- Route 233: Chowchilla
- Former Route 234 and CR J9: French Camp Road
- Route 235, County Route J8: Eight Mile Road and French Camp Road: Stockton
- Route 236: The Big Basin Loop
- Route 237: The Southbay Freeway
- Route 238 and I-238: How To Annoy a Roadgeek
- Route 238 and I-238: How To Annoy a Roadgeek (Part 2)
Season 29
- Route 239: The Mid-State Non-Tollway
- Route 242: The Concord Cutoff
- Route 243: Banning-Idyllwild Road
- Route 247: Old Woman Springs
- Route 251: Point Reyes Freeway
- Route 253: Boonville to Ukiah
- Route 254, lRN 296: Avenue of the Giants
- Route 255, LRN 294: Arcata Loop
- Route 256: The Roseville Cutoff and Route 65
- Route 258: The Whitnall Freeway, Los Angeles Edition
- Route 259: An Extended Exit Ramp
- Route 260: The Posey Tubes
Season 30
- Route 262: The Mission Blvd Cutoff
- Route 263, Route 265, Route 273: Former US 99 Routings
- Route 266: Nevada to Nevada
- Route 267: Truckee to Tahoe
- Former Route 268: Mullholland Drive
- Route 269: Avenel to Five Points
- Route 270: The Bodie Ghost Town
- Route 271, Route 283: Former US 101 Routings
- Route 275: The Tower Bridge
- Route 276: Disney and Mineral King
- I-280: The Serra Freeway
- Route 281: Unconstructed in Lakeport
Season 31
- Route 282: Coronado NAS
- Route 284, Route 285: Lake Davis and Frenchmen Lake
- Route 299: Arcata to Nevada (Part 1)
- Route 299: Arcata to Nevada (Part 2)
- Hidden I-305: US 50 in Sacramento
- Route 330: Highland to Running Springs
- Route 371: Aguanga to Anza
- I-380: SFX
- I-380: The Southern Crossing
- Former US 395: San Diego to San Bernardino
- US 395: Victorville to Bishop
- US 395: The Eastern Sierras
- US 395: Northern California
Season 32
- Former US 399: Ojai to Bakersfield (Part 1)
- Former US 399: Ojai to Bakersfield (Part 2)
- I-405: The San Diego Freeway (Part 1)
- I-405: The San Diego Freeway (Part 2)
- Former Route 440: Shasta Lake
- US 466: Morro Bay to Vegas (Part 1)
- US 466: Morro Bay to Vegas (Part 2)
- Former Route 480: The Embarcadero Freeway
- I-505: The Vacaville Spur
- I-580: Former US 48
- I-580: I-5W and Oakland
- I-580: Richmond-San Rafael Bridge
Season 33
- I-605, Former Route 240: San Gabriel River Freeway
- I-680: The Sinclair Freeway (Part 1)
- I-680: The Sinclair Freeway (Part 2)
- I-710: The Long Beach Freeway (Part 1)
- I-710: The Long Beach Freeway (Part 2)
- I-710: Fall Into the Gap
- Former Route 740: Pine to Palms Highway
- I-780: The Benecia Cutoff
- I-805: Jacob Dekama Freeway (Part 1)
- I-805: Jacob Dekama Freeway (Part 2)
- I-880: The Bayshore Freeway (Part 1)
- I-880: The Bayshore Freeway (Part 2)
Season 34
- Route 905: Border Crossings
- Route 980: Oakland
- “A” County Routes (Part 1)
- “A” County Routes (Part 2)
- “B” County Routes
- “C” County Routes
- “D” County Routes
- “E” County Route (Part 1)
- “E” County Route (Part 2)
- “G” County Route (Part 1)
- “G” County Route (Part 2)
- “G” County Route (Part 3)
Season 35
- “J” County Routes (Part 1)
- “J” County Routes (Part 2)
- “J” County Routes (Part 3)
- “N” County Route (Part 1 – The Canyon Routes)
- “N” County Routes (Part 2 – The High Desert)
- “N” County Routes (Part 3 – Others)
- “R” County Routes
- “S” County Routes (Part 1)
- “S” County Routes (Part 2)
- “S” County Routes (Part 3)
- Route by Route Wrapup
- Route by Route Wrapup