Photographer's notes: "Transmission towers move power lines from the powerhouse of Hoover Dam up out of Black Canyon, Arizona side near the dam, May 21, 2009."
Photographer's notes: "Aerial view of Lake Mead, Hoover Dam, and the bridge under construction with reflection of the bridge in river below, June 30, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view of Lake Mead, Hoover Dam, and the bridge under construction with reflection of the bridge in river below, June 30, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view of the structurally completed bridge showing its relationship to Hoover Dam and Lake Mead, July 31, 2010." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view showing relationships among Hoover Dam, the original road between Arizona and Nevada, and the Hoover Dam Bypass under construction, May 22, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view showing relationships among Hoover Dam, the original road between Arizona and Nevada, and the Hoover Dam Bypass under construction, May 22, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "View of the bridge, dam, and Lake Mead from the top of Sugarloaf on the Arizona side, July 30, 2010." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "View of the bridge, dam, and Lake Mead from the top of Sugarloaf on the Arizona side, July 30, 2010." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "A return to the view of the bridge from the dam sidewalk first taken in April 2009. January 13, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "A return to the view of the bridge from the dam sidewalk first taken in April 2009. January 13, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge