travisl found Bartfam's Barton (Traditional Cache)
There's many ways to come up with the approximate number of people who participated in a cache machine. One way could be to ask the construction people on the west side of the bridge how many people did a U-turn in the construction zone, and then multiply that number by 3, the average number of cachers per car.
We never saw a parking kiosk, and were never asked to pay. Strange.
Quick find, and by the time we got there, the three girls must've been used to strange folks heading into the woods.