Aerial flyover of the two Pulga Bridges crossing North Fork Feather River

pulga bridges bridge viaduct gorge flyover halfthrough arch bridge aerial infrastructure canyon crossing feather river through arch bridge overpass steep highway 70 valley span state route 70 white water traverse road arch over north fork river arch tilt down national forest framework cliffs connection union pacific railroad traintrack steel railroad drone mountains nearby slopes flow metal forward beams rapics plumas two rocky state support woods