It's 15-20 miles due east of Lindsay, CA. In the Sierra National Forest. It's Blue Ridge Road, which is a left turn off Balch Park Road AKA J-37, heading more or less north. It's a transmitter tower road.
PJAMM Cycling's summary page for Balch Park Road:
https://pjammcycling.com/climb/243.Balch%20Park%20Road