How often do rails on a railroad line need to be replaced?
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http://www.youtube.com/watch?v=3QfdaqZ9jxQ This Video explains in detail the railway system in Mumbai,India and how and when the railroads are replaced on a railway line. read more
The railroad I work for also has main line, but there's also several branch lines where the traffic is slower and often lighter. There, ties can last 30 to 50 years and on straight track, the rails can go for a very long time. One branch line was originally built in 1869. It was put down with 56 pound rail (56 pounds per yard). read more
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