Some members have asked, while considering theories, about the private road that goes under the bridge and how BG may have parked a vehicle on that road to use in his plan. I've outlined the road in red (from the bridge... to the cemetery) if traveling on "rural country roads." It involves taking a left onto W200N Road. If you take a right on W200N, you have to pass over Route 25. There is no entrance ramp. If you pass over Route 25, you will be heading directly to the town of Delphi. Of course, you can get to the cemetery by literally traveling down Main Street through Delphi center. From W200N you can take a left onto State Road 39 and head to Route 25 that way... taking Route 25 north to the MHBT and then the cemetery.
ET Remove my own theory. I really just wanted those who had questions about where the road goes to be able to visualize the road system in the area.