2831 x 4256 px | 24 x 36 cm | 9,4 x 14,2 inches | 300dpi
Data acquisizione:
7 settembre 2009
Ubicazione:
Straits of Mackinac, Michigan, USA
Altre informazioni:
Thousands walk the 5 mile across Mackinac Bridge every year on Labor Day in the USA The Mackinac Bridge is currently the third longest suspension bridge in the world. In 1998, the Akashi Kaikyo Bridge in Japan became the longest with a total suspension of 12, 826 feet. The Great Belt Bridge in Halsskov-Sprogoe, Denmark, which also opened in 1998, is the second longest suspension bridge in the world with a total suspension of 8, 921 feet. The Mackinac Bridge is the longest suspension bridge in the western hemisphere. The total length of the Mackinac Bridge is 26, 372 feet. The length of the suspension bridge (including anchorages) is 8, 614 feet. The length from cable bent pier to cable bent pier is 7, 400 feet. Length of main span (between towers) is 3, 800 feet. The five-mile bridge, including approaches, and the world’s longest suspension bridge between cable anchorages, had been designed by the great engineer Dr. David B. Steinman. Merritt-Chapman & Scott Corporation’s $25, 735, 600 agreement to build all the foundations led to the mobilization of the largest bridge construction fleet ever assembled. The American Bridge Division of United States Steel Corporation, awarded a $44, 532, 900 contract to build this superstructure, began its work of planning and assembly. In U.S. Steel’s mills the various shapes, plates, bars, wire and cables of steel necessary for the superstructure and for the caissons and cofferdams of the foundation, were prepared. The bridge was officially begun amid proper ceremonies on May 7 & 8, 1954, at St. Ignace and Mackinaw City. Photography by Jeffrey Wickett, NorthLight Photography llc, http://www. northlightlc. com/
