One part railroad trestle, one part Sol LeWitt sculpture, the Taylor Yard Bikeway/Pedestrian Bridge traverses the Los Angeles River with a minimalist gesture: An 18-foot-wide pathway seems to float inside a structural grid. The 400-foot-long, traffic-cone-orange steel-frame structure is part of a larger revitalization of the 51-mile river, which once was seen as nothing more than a concrete drainage channel. But in the past decade, Angelenos have found a new love of the waterway—especially its soft-bottomed stretches, which are dotted with islands of tall grasses and scruffy trees and edged with the Los Angeles River Trail, a popular greenway and bike path connecting Downtown L.A. to Griffith Park.