Historic U.S. Highway 101 - Sonoma County

Index to U.S. 101:

• Index
• Northbound
  • Los Angeles County: Interstate 5 to California 170
  • Los Angeles County: California 170 to Ventura County Line
  • Ventura County
  • Santa Barbara County
  • San Luis Obispo County
  • Monterey County
  • San Benito County
  • Santa Clara County (#1)
  • Santa Clara County (#2)
  • San Mateo County
  • San Francisco County
  • Marin County
  • Sonoma County
  • Mendocino County
  • Humboldt County (#1)
  • Humboldt County (#2)
  • Del Norte County
• Southbound
  • Del Norte County
  • Humboldt County (#1)
  • Humboldt County (#2)
  • Mendocino County
  • Sonoma County
  • Marin County
  • San Francisco County
  • San Mateo County
  • Santa Clara County
  • San Benito County
  • Monterey County (#1)
  • Monterey County (#2)
  • San Luis Obispo County
  • Santa Barbara County (#1)
  • Santa Barbara County (#2)
  • Ventura County (#1)
  • Ventura County (#2)
  • Los Angeles County (#1)
  • Los Angeles County (#2)
• Historic
  • San Diego County (#1) - City of San Diego
  • San Diego County (#2) - North San Diego County
  • Los Angeles County
  • Sonoma County
  • Mendocino County
  • Humboldt County
  • Humboldt County/Del Norte County - Scenic Drive and Newton B. Drury Parkway
• Business Routes - list of all U.S. 101 business routes
  • Santa Maria (California 135)
  • Petaluma
  • Santa Rosa
  • Ukiah - decommissioned/unsigned
  • Rio Dell (California 283)