Can you swing there

You would have a better chance swinging by the trees on the bridge on the Tualatin side of the river and not actually on the Willamette side in the park you can they like cutting them down so you'd have to hang your ropes and take them with you when you leave and if West linn Police do show up they will ask you to leave so just an FYI you can have fun I have seen people with ropes out there while I'm fishing but I have also seen people out there getting asked to cut them down in the park so take your chances and have fun

Yes