Sylvan Road is a corridor located largely in the hills south of downtown Monterey, California. The corridor was developed during the early 1940s as road which looped California State Route 1 from Munras Avenue to Fremont Avenue via the Del Monte Golf Course. Modern developments around La Mesa Village have led to two segments of roadway which once served as a through route being abandoned.
https://www.gribblenation.org/2024/10/abandoned-sylvan-road-monterey.html?m=1
I am very much reminded of NJ 324 in regard to this road.