I may be wrong but....from what I've been able to gather from looking at pictures from the very early days of SDC, I believe that Indian Point Road originally took a route that brought it up Hill Street and along what is now the west side of the square. That might have been even before SDC's opening (May 1960), back when it was just Marvel Cave Park. Parking at that time was on the square. The Swinging Bridge as an entryway to the park happened after that, sometime in the early to mid sixties. I remember having to cross it on my first visit to the park. It was probably around that time that Indian Pt. Rd. was rerouted to the east side of the park, the first of several reroutes.