I just got back home from northern California, where I did some field-checking while I think clinching all the state routes in northern California I hadn't already covered. The only ones I'm still missing are some in the four coastal counties from Los Angeles County to San Luis Obispo County.
I'll be shortly submitting the following changes to route files, which might affect your list files so watch your error logs:
-- Add CA 49 Historic (Mokelumne Hill), per preceding post, with conforming changes to the CA 49 route file
-- Delete CA 114 as unsigned
-- Truncate CA 87 north of US 101 (Caltrans' Postmile Query Tool says the route ends at US 101)
-- Truncate CA 82 east of I-880, removing mileage relinquished to the city of San Jose (some remnant old route signage, but not enough to guide travelers through several turns in downtown; plus this does not break the route in two), with conforming relabel of north endpoint in San Francisco
-- Adding a few more visible points for CA 61 (Oakland Airport), most notably for the turnoff for the Oakland airport's consolidated car rental facility, and also the winding CA 130 to the Lick Observatory atop Mt. Hamilton
-- Corrected some labels for CA 1 Business (Monterey) and CA 68.
The eastern segment of CA 146, to the east entrance to Pinnacles National Park, also appears to be unsigned. 2012 GMSV shows route signage within or just outside the park (junction markers on CA 25, End 146 marker at the old entrance station, postmiles between the old entrance station and CA 25), even after the park was expanded in 2006 to include all of CA 146's eastern segment. That route signage now has all disappeared. However, this may be temporary, pending decisions by the National Park Service on building a new east entrance station somewhere closer to CA 25, which might result in decommissioning all of eastern CA 146 or only part of it (Caltrans' Postmile Query Tool indicates none of it has yet been decommissioned). So I would hold off for now on removing the segment from the HB. The legislature has authorized the total relinquishment of CA 146, but that hasn't happened except the short stretch of the western segment within Soledad city limits, which has adequate continuation signage so I would leave that alone.
EDIT: I'm adding to today's pull request the removal of relinquished segments of CA 92, CA 185, and CA 238 in Hayward. This set of relinquishments was unusual, in that Hayward was not required to maintain signage pointing to the rest of each route, only to direct travelers to the rest of the state highway network. Sure enough, I saw no continuation signage on the relinquished segments. My changes will remove a few blocks from the east end of CA 92 and the south end of CA 185, and a few miles from the middle of CA 238 (splitting that route into the main Fremont segment, and a short stub in Castro Valley connecting to the I-238 and I-580 freeways).
cahighways.org indicates that in October 2017, the California Transportation Commission approved additional relinquishments for CA 92 east of Santa Clara St., CA 185 south of Rose St., and CA 238 between Industrial Pkwy and Hayward's southern city limit. However, the Postmile Query Tool indicates these latest relinquishments have not yet been implemented -- such delays are common, such as when the city in question wants the state to catch up on roadwork before taking the road off Caltrans' hands. I'll wait on these additional truncations before removing them from the HB.