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Reply to "Norfolk Southern Hassles Boaters on Lake Erie"

KOOLjock1 posted:
...

With the exception of swing bridges, most of these bridges operate on extraordinarily low horsepower, and they are very carefully balanced.  ...

sort of OT, but i remember a line from the PBS show on the Panama Canal claiming that the multi-ton lock gates were so well engineered, a motor the size of a VW engine was all that was needed to operate them.

i only caught it a few times but there was a Bascule Bridge on the Jersey Shore Line that was great fun to watch operate.  the counterweight was huge.

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