RIDGE ROUTE PRESERVATION ORGANIZATION
Preserving California’s Historic Ridge Route
Working to protect and preserve the scenic and historic 1915 Ridge Route through restoration, education, and community involvement.
Current Roadway Conditions
The historic Ridge Route is closed to through motor vehicle travel between Castaic and Gorman. The central portion remains closed to motor vehicles. Check the current access information and restrictions before planning a visit.
A Highway That Helped Connect California
Opened in 1915, the Ridge Route was an important early highway connection between Los Angeles and the San Joaquin Valley. Its winding alignment, historic pavement, and surviving roadside features provide a remarkable connection to California’s motoring history.
Explore the Ridge Route
Discover the road’s history, explore original records, follow preservation work, and learn about visiting the historic highway.
Discover the History
Learn how this remarkable mountain highway helped transform travel in California.
Maps & Documents
Explore historical records, preservation documents, and the Ridge Route timeline.
Preservation Work
Follow roadway restoration, volunteer projects, and the ongoing work to protect the historic highway.
Visit the Ridge Route
Learn about available access, historical sites, and important considerations for visiting the road.
PRESERVATION IN ACTION
Protecting the Original Roadway
The Ridge Route Preservation Organization works with volunteers and partners to care for the historic highway. Projects include roadway repairs, clearing debris, maintaining drainage, and protecting surviving historical features.
Explore More of the Road’s History
Historical Timeline
Follow the Ridge Route from its earliest surveys through construction, highway realignments, and preservation efforts.
Site Documents
Access historical records, roadway studies, and documents relating to the protection of the Ridge Route.
Latest Preservation News
Updates on restoration projects, historical research, volunteer activities, and the Ridge Route.
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Ridge Route Site Updates
You may have noticed that our website has changed a bit. We’re in the process of modernizing it and making it more…
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Ridge Route Volunteers Work to Fill Potholes
Now in the 3rd year of the Old Ridge Route Pothole Project, volunteers continue to work towards repairing and reopening this 111…
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Two New Ridge Route Videos!
The Historic Highway 99 Association of California has posted two new videos on their YouTube channel featuring the Ridge Route. They’re short…
Help Preserve the Ridge Route
The Ridge Route Preservation Organization relies on members, donors, and volunteers to support preservation of this historic California highway.
Become a Member
Support the organization and help fund ongoing preservation work.
Make a Donation
Contribute directly to efforts to protect and restore the historic roadway.
Volunteer
Discover opportunities to participate in roadway preservation and support the organization’s work.
Keeping the Ridge Route Alive for Future Generations
Discover the organization working to protect one of California’s historic highways.
