Michael F Ballard is the author and administrator of the Southern California Regional Rocks and Roads website, https://socalregion.com, since 1995. I have been studying the geology and highway history throughout southern California for most of my life. I am also the President of the Ridge Route Preservation Organization. Founder of the Historic Highway 99 Association of California, https://historic99.org .
The meeting and presentation on the Historic Ridge Route, originally scheduled for May 10, has been delayed one week and will be held on Tuesday, May 17, 2022 at 6 pm. I apologize for the delay and shift as I will be unable to attend on the original day. You may get a notice from Zoom if you have already registered. Thank you and I look forward to seeing you all there, one week delayed.
If you have not registered, please use the link below:
Join the Historic Highway 99 Association of California on Tuesday, May 10, 2022 at 6 pm for a presentation on the Historic Ridge Route by Michael F Ballard. The road will be covered from Castaic to Gorman. Learn about the current status of the roadway and the Ridge Route Preservation Organization that is working to reopen the roadway.
Please register for the presentation using the link below:
US 101 has seen many changes over the years in the Los Angeles area. Most of the route is heavily urbanized with housing tracts and businesses lining the roadway. Parts of the original roadway have also been incorporated into the modern freeway. All this leaves little chance for any original paving to remain intact.
There is one exception in the Agoura Hills area west of Los Angeles. A short section of 1930 concrete remains, though its days are limited. Known as Vendell Road, it branches off of Agoura Road just west of Liberty Canyon Road (Exit 34 on US 101). In a different twist, modern Agoura Road follows the original 1913 alignment. This roadway was bypassed in 1949 when this portion of US 101 was upgraded to an expressway and realigned. Later improvements to freeway still ignored this section and left it intact.
1944 aerial view of the area. Liberty Canyon Road is at center. Courtesy – UCSB
1952 aerial view of the area now showing expressway construction. The modern freeway follows the expressway alignment. Liberty Canyon is at center. Courtesy – UCSB
Looking west toward Agoura Road in 2013.
Date stamp on Vendell Road from July 28, 1930. This one of a few remaining on the roadway.
Toward the east end of the roadway in 2013
Today, construction is underway on a wildlife crossing that will obliterate the old paving and dramatically change this section of highway. The new bridge will be of great benefit to local and regional wildlife, allowing a safe crossing of a major transportation corridor. Despite the loss of the old road, I do look forward to seeing how it all looks in the end. The construction is just yet another lesson in making sure to take photos of things when you can while you can. You never know if it will be there when you return.
1920’s postcard of the Ridge Route near Castaic, CA
The Ridge Route on US 99 between Castaic and Gorman was a very twisty roadway when it first opened. All told, there was about 39,600 degrees of curvature over the approximately 30-mile route, enough to go in 110 circles. The state gradually worked to alleviate this headache by straightening curves whenever possible. Some curves were merely daylighted where others were completely bypassed. In the case of the Callahan Line Change, as shown in the postcard above, the road was shifted to change eight sharp curves into one gentle curve. The work here was completed in 1926. In 1933, the roadway would by bypassed altogether by the Ridge Route Alternate.
In 1936, US 60 was realigned between Moreno Valley and Beaumont. This realignment took the highway off of the Jackrabbit Trail and put it on a new alignment through the Badlands. This is the same alignment State 60 follows today.
This photo from 1935 shows the immense cuts and fills that were necessary for even the two-lane version of the roadway. In 1956, the roadway was widened to a four-lane expressway, further deepening some of these cuts. Work is currently underway to make this section six-lanes, with the outer lanes being truck-climbing lanes.
