East Towers 1 (foreground, with workers) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
East Towers 1 (foreground, with workers) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (foreground) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (center right) and 2 (far right) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
East Towers 2 (far left) and 1 (center), and South Tower 1 (right) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
Workers grind diaphgrams of the South Towers 1 and 2 of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (foreground) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (foreground) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (foreground) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
South Towers 1 (foreground) and 2 (background) of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
Workers walk pass a 'rotisserie' used to turn the South Towers 1 and 2 of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank
Workers watch as a crane lifts pieces of the South Towers 1 and 2 of Self-Anchored Suspension (SAS) bridge in the workshops of Shanghai Zhenhua Port Machinery Co. Ltd. (ZPMC), on Changxing Island, Shanghai, on January 12, 2009. Photo by Lucas Schifres/Pictobank