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Can anyone tell me what is the heaviest rail currently in use? My interest is mainly steam era but I've been having a discussion with a pal who tells me the UP in Weber Canyon uses an extremely heavy rail section. To my (probably outdated) knowledge, 132 pounds per yard is considered heavy but has been used more often over the past generation due to increased car weights. The heaviest rail I know of was 156 pounds per yard, developed by the Pennsy (per 1948 RY ENGINEERING & MAINTENANCE CYCLOPEDIA). Is there a heavier section in use today? If so, what weight & how high is it (distance from bottom flat surface to top of railhead) & where used? Thanx to those more knowledgeable if they can provide answer.
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