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Welcome to the new home for the Historic Highway 99 Association of California! This is a work in progress, so if you see anything that doesn’t quite work right or looks odd, please let us know!

As US 99 celebrates is 100th anniversary, we put together a video discussing what US 99 was, its history, and what happened to it. Learn about the whole US 99 “family” of routes, when it was decommissioned, and what replaced it in California. Come check it out!

The Historic Highway 99 Association of California, in conjunction with the RRPO, has produced a video on the basics of the Ridge Route and some of the features that make the road unique. Learn about the curbs, rails, footprints of all types, tire tracks, and more that can be found on the road. You can … Read more

Greetings all! We’re starting a Discord server to help broaden our reach and increase discussion about Historic US 99 in California. Come join us on Discord on our server! https://discord.gg/DX3kmmXN

From Evan Decker of Mentryville, Inc: If you’ve recently driven along the 5 Freeway (Interstate 5) near the Lyons Avenue/Pico Canyon Road exit recently, you’ll notice some new California Historical Landmark wayfinding signs for the historic oil boomtown of Mentryville which was established in 1876. It is so important that historic sites such as Mentryville deserve the … Read more