The alignment history of CA 49 in Downieville

[Max Rockatansky]

California State Route 49 is aligned through the Sierra County seat of Downieville via Main Street and Commercial Street over Downie River via the 1938 Jersey Bridge.  The 1938 Jersey Bridge and Commercial Street comprise the only one-lane component of California State Route 49.  When California State Route 49 was commissioned during 1934 it was aligned over the original Jersey Bridge which is famous for being the only known site of the hanging of a woman in the history of California.  California State Route 49 was shifted to a new alignment downstream on the Downie River near the confluence of the North Fork River during 1936 via a concrete bridge.  The new bridge over the Downie River was destroyed in a flood during December 1937.  The floods of 1937 shifted the alignment of the California State Route 49 back to Commercial Street and a new iteration of the Jersey Bridge constructed during 1938. 

https://www.gribblenation.org/2023/02/the-alignment-history-of-california.html?m=1