Jesus Maria!, might be what you're screaming in your helmet on this road! This is a challenging little goat trail that is an alternative to the lower portion of Hwy 4, east of Hwy 49. It's bumpy, and narrow, and has poor sightlines, and in some places too many driveways. With that description you'll know if it's not for you. But if you're one of those riders who enjoys the challenge of a goat trail, Jesus Maria will get you away from other traffic and give you lots and lots to do.
When you get to the top, turn right on Railroad Flat, then left on Sheep Ranch Road, and you can rejoin Hwy 4 at Murphys to continue your climb towards Ebbets Pass.