We tried this location. It looked like it could be just what we wanted. However, we followed the GPS coordinates here on Dyrt.com and though the road was smoother than the one across the street, it took us way out on a small dirt road that led to a cow field (with very aggressive cows) and eventually a dead end. It was a bit tricky getting turned around. We never did see places off to the side of the road to boondock. 

Just as we left the freeway, right by the grates there is a dirt lot off to the left but it was too close to the freeway and others for us. If you decide to try this spot, just don't follow the GPS coordinates.

We ended up staying 4 nights at Mile 10 - Dispersed Camping, and we really liked it.