there is no a path - but you can get there - it requires you walking almost to the road (do the crosswalk before the road) - then you walk in the grass to POFQ - then go along it's driveway to the main building. from there you can walk along the sidewalk to POR.
now expect a bunch of posts on how dangerous this is....

this walk will take about 15 minutes. did when OKW had really, really bad bus service. was sick and mean sick - allergy reaction to lunch - well lunch at the time OKW did not have buses - saw PO bus twice and had it - we got on - Mother then watched for the buses it was another hour before any showed up at OKW.
was too sick to care.