Category Archives: District 7

Caltrans, District 7, Highways, History, Image, Los Angeles, Los Angeles County, Roads, SR-170, SR-90

Featured Image – 9/4/2021

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1967 aerial photo showing the interchange between La Cienega Blvd (lower roadway) and Slauson Ave. Courtesy – Caltrans

In 1949, La Cienega Blvd was extended through the Baldwin Hills. This roadway was eventually to become a part of the State Route 170 Laurel Canyon Freeway. Interchanges and grade separations were built with this in mind. Access to the roadway was also controlled, making it easier to upgrade the roadway to a full freeway in the future. It became the only section constructed not long after.

Today, the roadway remains as a freeway and expressway-grade roadway through those hills acting as a “cutoff” for travelers coming from the westside of Los Angeles to the airport area. The photo above shows the interchange between La Cienega Blvd (right-left) and Slauson Ave in 1967. The photo was taken as a part of a study for a freeway routing for State Route 90, another stub freeway nearby. That freeway gained the moniker of the “Slauson Cutoff” by Johnny Carson.

Los Angeles may be known as “The Land of Freeways” but many of those freeway dreams didn’t come to pass. This is an example of one of those.

For further information:

La Cienega Boulevard – Baldwin Hills
Castaic, District 7, Highways, History, Image, Los Angeles County, Old Alignment, Ridge Route, Ridge Route Preservation Organization, Roads, US 99

Featured Image – 8/9/2021

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Ridge Route between the Tumble Inn and Kelly’s Halfway Inn

The old Ridge Route is my favorite roadway. Each trip is an adventure and I always seem to find something new. Sometimes those “new” things aren’t as exciting as they could be. In January 2021, a large rockslide was found just south of Swede’s Cut. On August 28, the Ridge Route Preservation Organization will be holding an event to remove that rockslide. They need your help and support. See their website for details on how you can help. Not only will you be able to go beyond the gates and see parts of the Ridge Route that are normally closed, but you will be able to help maintain it as well.

http://ridgeroute.org

Archives, California, District 7, Highways, History, I-5, Image, Los Angeles County, Roads, Southern California, SR-14, US 6, US 99

Featured Image – 7/22/2021

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US 6 / US 99 Interchange in 1955. Courtesy – Caltrans

In 1955, the first section of the Golden State Freeway opened. It was a short section, running from near Weldon Summit to Foothill Blvd. The freeway was the first major attempt to improve traffic in the Newhall Pass area and it did help for a time. The freeway remained until the early 1970’s when the new I-5 / State 14 interchange was constructed and the old freeway was reconfigured to become the “Truck Lanes”.

Today, the original interchange still remains, though not entirely used. The lower level, formerly the US 6 West to US 99 South connector, is now partially filled in. The second level still carries Sierra Highway with the top level carrying the I-5 Truck Lanes. The Newhall Pass has undergone many changes in its time as a transportation corridor for Los Angeles. This one was but one of those. The photo was taken on November 22, 1955.

Castaic, District 7, Highways, Historic Highway 99 Association of California, I-5, Los Angeles County, Meeting, Old Alignment, Old Bridge, Roads, US 99, Website News

Ridge Route Alternate Presentation

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On Tuesday, April 6 at 6pm, I will be giving a presentation via Zoom on the Ridge Route Alternate section of US 99 during the regular monthly meeting of the Historic Highway 99 Association of California. It will cover the history of the roadway from its original construction through to its replacement by I-5 from Castaic to Tejon Pass. The presentation will include some rarer photos of the route and have time at the end for questions. Come join us and learn a bit about the history of US 99 in Southern California!

To register for the presentation, use the link below:

https://zoom.us/meeting/register/tJwlf-6srDIqHdRkYBHsG8jzi8D68Gtys-dF

District 7, Earthquake, Geology, History, I-5, Image, Los Angeles County, Santa Clarita, SR-14, US 6, US 99

Featured Image – 2/8/2021

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1970 view of the I-5 / SR-14 Interchange construction. This “build” would partially collapse on February 9, 1971 while still incomplete. Courtesy – Caltrans

To commemorate the 50th anniversary of the February 9, 1971 M6.6 Sylmar / San Fernando Earthquake, our featured image shows the construction work in progress on the I-5 and State 14 interchange in 1970. This work would be halted abruptly in the early hours of February 9, 1971. After this, it would be reconstructed two more times. The earthquake changed the way freeways such as this were built and did further seismic codes throughout the state.

For further information about the interchange:

Golden State Freeway / Antelope Valley Freeway Interchange
US 6 / US 99 Junction – Tunnel Station
Historical Photos of the US 99 / US 6 Interchange