Former CA 141

[Max Rockatansky]

California State Route 141 was a short State Highway located in Vallejo which was created out of a spur of what had been Legislative Route Number 74 during the 1964 State Highway Renumbering.  California State Route 141 was aligned on Maine Street, Benicia Road and Lemon Street from California State Route 29/Sonoma Street to Interstate 780.  California State Route 141 was planned to be constructed as the Waterfront Freeway through Vallejo.  California State Route 141 was deleted during 1988 when the city of Vallejo took over construction of Curtola Parkway.  Despite California State Route 141 being deleted its planned freeway corridor exists today as the surface roads Curtola Parkway and Mare Island Way. 

https://www.gribblenation.org/2023/04/former-california-state-route-141.html?m=1

[Quillz]

So looking at the map, isn't this basically just I-780 with a slight western extension?

[Max Rockatansky]

So looking at the map, isn't this basically just I-780 with a slight western extension?

Kinda of, it was intended to reach what is now CA 37 when the freeway corridor was adopted during 1962

[bing101]

So looking at the map, isn't this basically just I-780 with a slight western extension?

Well at the time of when CA-141's existence the  It would have been technically the then proposed extension of I-680 to CA-37 to form the Bay Area Beltway and the section from Benicia to Fairfield would have remained as CA-21.

[bing101]

I seen some CA-141 signs in Vallejo going up to the 1990's on Benicia Road. Sometime in the 2000's all of the former CA-141 signs have been removed due to it being rusted out.