Wikipedia:<br>The viaduct of the Northern bypass of Rottweil is a 2002 finished crossing of the Bundesstraße 27 over the Neckar about one kilometer North of Rottweil with a total length of 295 metres. It consists of five fields with the width of 45 m, 50 m, 58 m, 72 m and 70 m. End of July 1999 was begun with the construction of the bridge over the Neckar Valley, the bridge should be originally completed in August 2001. Spanning the Neckar Valley, four pillars are required. The construction of the bridge cost 11 million DM.
 
 The built was used for the construction of the bridge body, were retracted by the Western bridgehead of individual prefabricated hollow. Each 30 meters of the roadway were concreted in the built. The stem Bill itself had a length of 42 meters and weighed 160 tons. The prestressing steel is not within the concrete of the bridge, but in the cavity of the body of the bridge.
 
 On November 30, 2001, a large temporary help pillar of the new bridge was blown up. 15: 00 Exploded four kilograms of nitroglycerine and brought the 300-ton concrete pillar to overturn. The pillar of aid was needed in the construction of the bridge, to overcome the span between the actual pillars (72 meters).<br><br>Rottweils new Northern bypass was officially opened on Friday, 18 October 2002. The height above ground is 58 m.