When people think of rail travel they think of trains. They do not think about the infrastructure of the train network. This consists of countless bridges, viaducts, embankments, cuttings and tunnels. Background to Network Rail Independent companies built the first railways in the 19th century. From midnight on 31st December 1947 the government took control of the railway industry and British Rail ran it. In 1994 the railway industry was privatised and its services franchised to train operating companies such as Virgin and First Group….