Mike,
If you look on historicaerials.com (in the links section) and go back to 1962, you'll see it did end at Touhy. I imagine it was cut off to improve traffic flow. The street that runs through the cemetery is Newark av, it was gated off I believe in the late 80's or early 90's. I would guess it was gated to keep people out, maybe due to vandalism?
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