Map of Dolomite Loop Road and current State 136. Stars at center mark the former railroad crossing locations. Photos below show the southern crossing.
The Owens Valley in Inyo County, California is home to many fascinating highway relics. One road in particular toward the southern end of the Owens Valley southeast of Lone Pine, State Highway 136, had a very unique and rare feature – old railroad grade crossing markings. Until 1964, it was known as State Highway 190 and was realigned quite a bit between the Owens River and Keeler in the late 1940’s and early 1950’s as travel to Death Valley became more popular. Most of the old alignments are still traversable today, complete with original paving. The longest intact section is known as Dolomite Loop Road and runs between the Owens River bridge to just north of Swansea.
Former SPRR (Carson and Colorado Railway) grade crossing near Dolomite mine. Remains of rails and ties can be seen here at the darker asphalt patch.
These crossings were still in use until the whole line was abandoned in April 1960. The markings themselves likely date to the 1940’s. They are made of a large X and an arrow pointing to the crossing itself.
Looking southerly toward the northern Dolomite mine grade crossing.
Northerly view at the Dolomite mine crossing. The former railroad grade can be seen low berm to the left of the roadway.
Castaic Junction, located just north of Six Flags Magic Mountain in the Santa Clarita Valley was an important stop along US 99 and State 126 until the 1980’s. A Standard Oil gas station, one of the largest and busiest at the time, was located here in addition to Tip’s Restaurant. The restaurant was reported to be the last stop for James Dean before he died on September 30, 1955. A Beacon station also existed here at the south side of the junction, though it didn’t last as long as the Standard station. The gas station closed sometime in the 1980’s and the restaurant persisted as the Castaic Junction restaurant a bit longer.
A Brief History of the Roadway Changes
Map of the original version of Castaic Junction before the 1948 widening.
1944 view of Castaic Junction looking southerly. SR-126 enters from the right. Courtesy – Caltrans
The roadway through the junction has also undergone many changes since it was first paved. In 1917, a 15′ concrete slab was laid down. This was widened in 1922 by adding two 2.5′ slabs on either side of the existing concrete. At the time, Castaic Junction was a “wye” intersection, with US 99 making up the east side and State 126 on the south side. The west side was a connector road from SB US 99 to WB 126. In 1931, the 1917/1922 pavement was removed and replaced with a wider two-lane section along the same route. By 1933, an additional lane was added making it a three-lane “suicide lane” setup.
Looking northerly at Castaic Junction in 1948 just after widening. Photo Courtesy – Caltrans
In 1948, yet more changes were made to the junction. US 99 was realigned a bit to the east and made a four-lane expressway. State 126 was also widened, though just at the junction itself. The former west leg of the junction was removed as the Standard Oil gas station was augmented. This configuration lasted until 1964 when I-5 was constructed and the whole intersection was bypassed.
1969 aerial photo showing the 126 Freeway and I-5 Freeway adjacent to the original Castaic Junction. Courtesy – Caltrans
Today, little remains of any of the structures that existed at the junction. A new shopping center and Caltrans maintenance yard occupy the area east of the junction. The original traffic signals were replaced and additional curbs were added.
Surprisingly, the original 1917 wye junction remains nearly completely intact. The west and east legs of the junction are still visible, despite a major realignment, the construction of the Standard Oil gas station in 1948, and its subsequent demolition. How long any of this will last is unknown as development is likely to erase these traces in the near future.
Either through heavy wind, corrosion, or a combination of the two, a section of “greenout” fell off a sign on the eastbound Ventura Freeway (State 134) recently at Victory Blvd. This sign, approaching the Golden State Freeway (I-5) has been there since 1961 when the freeway opened. In 1961, the Golden State Freeway was still US Highway 99. In 1965, the sign was covered over with an overlay for I-5. In early 2023, that overlay (“greenout”) fell off, revealing a portion of the original signage. The left side of the sign has a State 134 EAST sign as 134 proceeded east toward Pasadena via the Golden State Freeway and Colorado St until 1968.
If you missed my presentation on September 13 on the history of the Ridge Route Alternate, you can see it on YouTube on the Historic Highway 99 Association of California’s channel. Come take a look!
On September 13, 2022, I will be giving a Zoom presentation for the Historic Highway 99 Association of California on the Ridge Route Alternate between Castaic and Tejon Pass. Come join the Association for the presentation! See the link below for details and to learn how to sign up.
