A new bridge over the Los Angeles River at Riverside Drive was touted by city leaders Monday for its “modern” pedestrian and bike-friendly features, but noticeably missing from all the fanfare was the support of those who normally advocate for such amenities. Despite the bridge’s protected bike and pedestrian lanes, and its role in filling in a gap in the Los Angeles River bikeway between the San Fernando Valley and downtown Los Angeles, many of the advocates who usually show up to support such improvements were absent from a ribbon-cutting ceremony headlined by Mayor Eric Garcetti and Councilman Gil Cedillo.