Little info due to lack of use with better nearby options. The entire route appears questionable. Perhaps singletrack long ago, more likely the faint doubletrack a local rarely used. The most used western 0.75-mile portion looks the most questionable but has more purpose for the masses.
When hiking several trails on a single "hike", log it with a generic name that describes the hike. Then link the trails traveled, check out the example.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.