The document discusses a bike path on Greenpoint Ave in Brooklyn that ends at the intersection with Kingsland Ave. The bike lane terminates right before reaching the J.J. Byrne Memorial Bridge to Sunnyside, Queens, where signage warns cyclists and asks them to dismount and walk across the narrow bridge walkway, which offers little protection from the nearby 4-lane roadway, and there are no bike lanes on the other side in Sunnyside.