Unbuilt CA 234

[Max Rockatansky]

California State Route 234 is a three-mile unconstructed State Highway which was planned near the southern city border of Stockton near French Camp.  The corridor which was adopted into the State Highway System by way of 1959 Legislative Chapter 1062.  The traversable routing of California State Route 234 is noted by Caltrans as French Camp Road despite it not matching the planned corridor routing displayed on State Highway Maps.  During 1983 San Joaquin County adopted a resolution to adopt French Camp Road formally California State Route 234.  The state never acted on the resolution and San Joaquin eventually lost interest.  Modern Arch Airport Road was completed in 2010s along the planned corridor of California State Route 234.  Arch Airport Road facilitates traffic to newer industrial construction at Airpark 599 near Stockton Metropolitain Airport. 

https://www.gribblenation.org/2024/03/unconstructed-california-state-route-234.html?m=1

[Quillz]

I always find the terminology "unbuilt" or "unconstructed" interesting, especially in places where the routing clearly exists, but wasn't state maintained for various reasons. I always felt a better term like "unadopted" would work better, because the former two imply physical connections not existing.

[TheStranger]

I always find the terminology "unbuilt" or "unconstructed" interesting, especially in places where the routing clearly exists, but wasn't state maintained for various reasons. I always felt a better term like "unadopted" would work better, because the former two imply physical connections not existing.

I wonder if there's a comprehensive list of "built but not as numbered highway" examples in California.

I can think of two others in metro Sacramento:

- the short Watt Avenue expressway from Jackson Road to American River Drive, which was proposed as part of a Route 16 upgrade

- Cosumnes River Boulevard to Freeport, originally planned as part of the Route 148 project

Outside of that area:

- La Cienega Boulevard through the Kenneth Hahn park in LA (planned as part of 170)

- Richmond Parkway and San Pablo Dam Road in Contra Costa County (planned as Route 93)

Would Vasco Road north of I-580 in Livermore (planned approximately as part of the Route 84 corridor) fit this?

[Quillz]

Oh, never knew about that 170 extension. I can kind of see that working, assuming 170 ran down Laurel Canyon, then cut across to La Cienega. Then ended... somewhere.

One I think you missed was CA-256. Was supposed to exist between CA-27 and I-405 via Mulholland Drive (even though that hasn't ever been paved), but never adopted.

[TheStranger]

Oh, never knew about that 170 extension. I can kind of see that working, assuming 170 ran down Laurel Canyon, then cut across to La Cienega. Then ended... somewhere.

The planned 170 freeway down Laurel Canyon would have intersected with 405 and 90 near LAX, providing a second freeway route to the airport from the valley (and by extension be the main route to LAX from downtown).

One I think you missed was CA-256. Was supposed to exist between CA-27 and I-405 via Mulholland Drive (even though that hasn't ever been paved), but never adopted.

256 was the never-built freeway replacement for former US 99W in Roseville (i.e. not the section of 65 that cut to the southeast towards I-80).

268 was the planned Mulholland extension that is still a dirt path, right?

I was thinking more in the spirit of "it was planned as a state route or US route or something, then built as a non-numbered road"

[bing101]

CA-141 was another one where it was supposed to go to where the current Curtola Parkway and Mare Island way in Vallejo as the Vallejo version of the Embarcadero Freeway connecting to CA-37.

[bing101]

I always find the terminology "unbuilt" or "unconstructed" interesting, especially in places where the routing clearly exists, but wasn't state maintained for various reasons. I always felt a better term like "unadopted" would work better, because the former two imply physical connections not existing.

I wonder if there's a comprehensive list of "built but not as numbered highway" examples in California.

I can think of two others in metro Sacramento:

- the short Watt Avenue expressway from Jackson Road to American River Drive, which was proposed as part of a Route 16 upgrade

- Cosumnes River Boulevard to Freeport, originally planned as part of the Route 148 project

Outside of that area:

- La Cienega Boulevard through the Kenneth Hahn park in LA (planned as part of 170)

- Richmond Parkway and San Pablo Dam Road in Contra Costa County (planned as Route 93)

Would Vasco Road north of I-580 in Livermore (planned approximately as part of the Route 84 corridor) fit this?

Vasco Road is part of the CA-84 gap interestingly the other part of CA-84 from Rio Vista to West Sacramento is never mentioned only the one that goes from San Gregorio to Livermore is mentioned because of it's close proximity to Silicon Valley.


https://en.m.wikipedia.org/wiki/California_State_Route_84

[Max Rockatansky]

The Delta portion of 84 is weird.  A lot of it was the legislative definition of 160 (including the Antioch Bridge) for quite a few years after the 1964 Renumbering.

[TheStranger]

Vasco Road is part of the CA-84 gap interestingly the other part of CA-84 from Rio Vista to West Sacramento is never mentioned only the one that goes from San Gregorio to Livermore is mentioned because of it's close proximity to Silicon Valley.


https://en.m.wikipedia.org/wiki/California_State_Route_84

I am specifically talking about routes that were built, but not signed as a state highway, after they had been officially proposed as one before.

Vasco specifically has never been signed as 84 or maintained by the state of California, but approximates the Livermore-Brentwood segment of that route definition.

Not sure if say something like Slauson Avenue in Los Angeles between the two portions of Route 90 would fit this too, or that forest road between the two segments of Route 162 up north - both of those existed prior to the route designation, as opposed to the examples mentioned here.

[bing101]

Vasco Road is part of the CA-84 gap interestingly the other part of CA-84 from Rio Vista to West Sacramento is never mentioned only the one that goes from San Gregorio to Livermore is mentioned because of it's close proximity to Silicon Valley.


https://en.m.wikipedia.org/wiki/California_State_Route_84

I am specifically talking about routes that were built, but not signed as a state highway, after they had been officially proposed as one before.

Vasco specifically has never been signed as 84 or maintained by the state of California, but approximates the Livermore-Brentwood segment of that route definition.

Not sure if say something like Slauson Avenue in Los Angeles between the two portions of Route 90 would fit this too, or that forest road between the two segments of Route 162 up north - both of those existed prior to the route designation, as opposed to the examples mentioned here.

All true and the Southeast Connector in Sacramento is a city route on a previous proposed alignment for CA-148.


https://en.wikipedia.org/wiki/Capital_SouthEast_Connector