Photographer's notes: "A high line crane system, which ran between the Arizona and Nevada sides of the canyon, was used to transport materials and workers during the bridge's construction." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Aerial view, the pedestrian walkway "switchbacks" up to informational/historical displays and the pedestrian walkway on the bridge can be seen from the lower left of the frame moving across the bridge. April 10, 2012." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Signs and commercial development along West Sahara Avenue at North Bridge Street.

Photographer's notes: "View from the Nevada side arch foundation looking across toward Arizona, evening, May 20, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "View upstream of the bridge and dam. The position of the green boom indicates a concrete pour for the arch was in progress. Note: This is one of the few photographs where I supplemented existing light by adding a flash to give the hill on the left detail." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Afternoon aerial view of the river, bridge, dam and Lake Mead, January 14, 2011. Note: The structural relationship between the bridge and the small bridge over the Arizona spillway can be easily seen." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge