In the spirit of avoiding angry mobs with pitchforks (or worse) while hiking, I'm wondering what resources are available for determining if a road or trail is considered public. The following example illustrates a situation that isn't so clear (perhaps only in my mind):
This is a map from LoJ (with land management layer turned on) showing "Popeye Peak," a high point in Boulder County, CO. Note County Road 82E, which passes to Popeye's north, and road/trail 604, which splits off to the south from 82E and circles around Popeye, reaching some public land to the east of the summit.
It would be nice if I could legally park off 82E and then hike up 604 until I get to the public land (let's ignore, for the sake of this example, that the summit itself is on private land). So how can I tell if road/trail 604 is public or private? Both 82E and 604 pass through private land based on the land management layer, but 82E is public, since it's a county road. How do we know if 604 also is public?
Thanks in advance for any food for thought.