Archival objects in this container: Workers pouring concrete for the walkway barriers during construction of the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada border, 2010 February 02 Workers pouring concrete for the walkway barriers during construction of the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada border, 2010 February 02 Workers inspecting concrete during Mike O'Callaghan-Pat Tillman Memorial Bridge construction, Nevada-Arizona border, 2010 February 02 Workers inspecting concrete during Mike O'Callaghan-Pat Tillman Memorial Bridge construction, Nevada-Arizona border, 2010 February 02 Ironworkers in a manbasket being transported over the Mike O'Callaghan-Pat Tillman Memorial Bridge during construction, Nevada border, 2010 February 02 Ironworkers being transported in a manbasket over the Mike O'Callaghan-Pat Tillman Memorial Bridge during construction, Nevada border, 2010 February 02 Center tub girders used during construction of the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada-Arizona border, 2010 February 02 Mike O'Callaghan-Pat Tillman Memorial Bridge being constructed, Nevada-Arizona border, 2010 February 02 Tub girders used during construction of the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada border, 2010 February 02 End of a tub girder used during construction of the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada border, 2010 February 02 Hoover Dam and the Mike O'Callaghan-Pat Tillman Memorial Bridge during construction, Nevada-Arizona border, 2010 February 03 Mike O'Callaghan-Pat Tillman Memorial Bridge arch and girder, Nevada-Arizona border, 2010 February 03 Mike O'Callaghan-Pat Tillman Memorial Bridge arch and girder, Nevada-Arizona border, 2010 February 03 Piers or columns used to construct the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada border, 2010 February 03 Ironworker near the arch and girder of the Mike O'Callaghan-Pat Tillman Memorial Bridge during the construction phase, Nevada-Arizona border, 2010 February 03 Arch and twelve installed central girders for the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada-Arizona border, 2010 February 03 Aerial view of the twelve central girders installed to support the Mike O'Callaghan-Pat Tillman Memorial Bridge deck, Nevada-Arizona border, 2010 February 03 Aerial view of the twelve central girders installed to support the Mike O'Callaghan-Pat Tillman Memorial Bridge deck, Nevada-Arizona border, 2010 February 03 Aerial view of the twelve central girders installed to support the Mike O'Callaghan-Pat Tillman Memorial Bridge deck, Nevada-Arizona border, 2010 February 03 Aerial view of the twelve central girders installed to support the Mike O'Callaghan-Pat Tillman Memorial Bridge deck, Nevada-Arizona border, 2010 February 03 Line of floats crossing Lake Mead to set a boundary for boats nearing Hoover Dam, 2010 February 03 Aerial view of the Hoover Dam bypass highway intersecting with the original road leading to the dam, Arizona border, 2010 February 03 Aerial view of Black Canyon and the Colorado River, downstream from Hoover Dam and the Mike O'Callaghan-Pat Tillman Memorial Bridge, Nevada-Arizona border, 2010 February 03 Aerial view of the original winding road descending to Hoover Dam with the new bypass road under construction in the upper right, Arizona border, 2010 February 03 Colorado River and Black Canyon, Nevada-Arizona border, 2010 February 03 Load More