Monterey and Santa Cruz County Route G12 is a 10.54-mile highway commissioned in 1965. The corridor begins at California State Route 129 in the city of Watsonville and extends south to US Route 101 in Prunedale. Portions of the County Route are comprised of repurposed surface segments of California State Route 1 in Watsonville and Legislative Route Number 22 near Prunedale.
https://www.gribblenation.org/2025/07/monterey-and-santa-cruz-county-route-g12.html?m=1