This cache is in the path of a "future road extension." Let's hope they Never Extend The Road!
Please be considerate of the neighbors when you're attempting to find this cache and park on the side of the road. Try not to make it obvious, but if someone asks you what you're doing, be honest.
The best path is go around the guard rail on the left hand side and straight back into the woods until you get to a clearly marked trail. From there you should be able to find it fairly easily based on the coordinates.