Photographer's notes: "Upstream view of the complete and open bridge at dusk, January 12, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Upstream view of the complete and open bridge at dusk, January 12, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "The form and structure of the bridge, its arch, piers and girders, are revealed in a view from the Nevada canyon wall near the old Nevada hairpin turn. The reflected light of Hoover Dam provides the primary night time illumination of this side of the bridge. January 12, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "The full form and structure of the bridge, its arch, piers and girders, are revealed in a view from the Nevada canyon wall near the old Nevada hairpin turn. The reflected light of Hoover Dam provides the primary night time illumination of this side of the bridge." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Afternoon view of the bridge from the top of Sugarloaf with the old Nevada road hairpin seen beneath the bridge, January 13, 2011. Note: With the bridge open, this again became a NAFTA (North American Free Trade Agreement) route for trucks." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Afternoon view of the bridge from the top of Sugarloaf with the old Nevada road hairpin seen beneath the bridge, January 13, 2011. Note: With the bridge open, this again became a NAFTA (North American Free Trade Agreement) route for trucks." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge

Photographer's notes: "Afternoon view of the bridge from the top of Sugarloaf with the old Nevada road hairpin seen beneath the bridge, January 13, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge