It looks like the bolts and pitons were put in a long time ago, back when Riverside Park was a sketchier place. More information on the history of climbing in Riverside here: beta-boy.com/nycboulderingg…
Routes face South or East and are protected by up to 5 slightly rusty bolts (plus anchors), pitons, and crash pads or a stick clip. Select climbs might be protectable with medium gear.