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California State Rotue 29

This past November I took California State Route 29 from the outskirts of Napa to Interstate 80 as part of my route home from Santa Rosa.


California State Route 29 ("CA 29") is a 106 mile north/south highway which begins at CA 20 near Upper Lake of Lake County.  CA 29 is a mostly rural highway which terminates at Interstate 80 in the City of Vallejo of Solano County.




Part 1; the history of California State Route 29

CA 29 was one of the original California Sign State Routes announced in the August 1934 California Highway & Public Works ("CHPW").   CA 29's original definition had it aligned between Vallejo and Upper Lake.



The first map I can find that shows CA 29 in detail is the 1935 Goshua Highway Map of California.  CA 29 is shown aligned through Cobb on what would be present day CA 175.  Within Napa CA 29 was aligned through downtown and followed present day CA 221 towards Vallejo.


CA 29 as originally defined was aligned over the following Legislative Route…
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