I'm not entirely sure what the point of it is - one side is the rec next to the creek, and the other side is a small private car park off a residential street which is also blocked from the creek by the same fence.
It reminded me of some of my exploration around university, with the odd inexplicably locked door separating two otherwise-accessible areas. Or when after emerging from a sequence of particularly twisty turny corridors I'd glance back at a door I'd just come through to sometimes find it plastered with "keep out" signs (which in one or two cases warned of an embarrassing demise for the unwary - the corridor next to the NMR scanner comes to mind). This is despite not having seen any such signs facing the direction I was going. Did this mean some corridors were only dangerous if entered from a certain direction?