DOT (graph description language) DOT is a plain text graph description language. DOT graphs are typically files with the file extension gv or dot. The extension gv is preferred to avoid confusion with the extension dot used by early (pre-2007) versions of Microsoft Word. Various programs can process DOT files.
The Lake Pontchartrain Causeway, or the Causeway, consists of two parallel bridges crossing Lake Pontchartrain in southern Louisiana, United States. The longer of the two bridges is 23.83 miles (38.35 km) long. It is the longest bridge in the world that runs continuously over water.
The world's longest bridge is the DanyangâKunshan Grand Bridge in China, part of the Beijing-Shanghai High-Speed Railway. The bridge, which opened in June 2011, spans 102.4 miles (165 kilometers). Another part of that train line, the 70.8-mile (114-km) long LangfangâQingxian viaduct, is the second longest bridge in the world. China constructed the DanyangâKunshan Grand Bridge in just 4 years, employing 10,000 workers, at a cost of about $8.5 million.