I live a mile from Old Jennings and Brannen Field. The area your talking about is a cool little spot for the kids to get out and gain some experience. I would suspect that if we start riding it alot, the cops will show. They have put up the black retaining material along the portion off of Old Jennings. Last time I was going by and saw someone over there, it was 2 or 3 4x4 trucks rooting around.
There are places to ride over there, but most are private property.
On another topic, I see a lot of trucks/trailers with quads heading down Blanding south toward Middleburg and HWY16. Where are they all going?