Photographer's notes: "Final concrete pour, which formed the keystone of the arch and completed its structure. Photographed from the Arizona side north or the bridge. August 10, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "During construction, drivers saw this view as they rounded the Nevada hairpin turn of the old highway. Note: This is one of the few hand held nighttime photographs and the only one taken from a car while in motion. At the time, I did not have permission to stop and photograph from this location." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "A solitary worker departs the construction site to the Nevada side of the canyon." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Tub girder and ironworker shadow on the Nevada side bridge deck, February 2, 2010." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Ironworkers arrive to work in manbasket, Arizona side of bridge arch construction, Hoover Dam Bypass Project, April 30, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view by early morning light shows the relationship between the respective arches of the dam and bridge, September 10, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Foundation of the arch on the Arizona side of the Black Canyon, April 13, 2010." 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." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge