Around 200 Potholes Filled on the Old Ridge Route by SoCalGas

SoCalGas has joined forces with the Ridge Route Preservation Organization to fill potholes on the 1915 Old Ridge Route. The 111 year old road runs between Castaic and Gorman and is the predecessor to the current day I-5 stretch, commonly refereed to as the Grapevine. This vital link, credited for uniting the state of California, … Read more

Written Comment on the Northlake Development Expansion

PHOTO: The Ridge Route, overlooking Queen Nell’s Castle and the homestead of Cornelia “Nellie” Martinez Callahan in Castaic, where the Northlake Development expansion is proposed. In 1909, California was on the cutting edge of the Good Roads movement. $18 million of state bonds were passed to construct the revolutionary new highway system. Stagecoach roads would … Read more

New Video – Clean Up The Ridge Route Introduction

Greetings All! We have recently produced a new video on our Clean Up The Ridge Route events which discusses what they are and how you can get involved. This last storm may have caused some damage to the road, and we can use your help up there to repair it.

November 2025 Storm Update

The storm that is currently hitting Southern California is predicted to drop quite a bit of precipitation on the Ridge Route area. We will be monitoring the weather and assessing whatever damage may occur as soon as we can after the storm has clear. We will need your help afterward to help clear the road … Read more

New Video – Ridge Route Basics

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. They also … Read more