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I climbed into the swing mechanism of a 1904 railroad swing bridge. Superior, WI. More photos in comments [4000X3000] [OC] also posted to /r/abandonedporn : r/MachinePorn
Gear Mechanism Of The Turning Span Of An Asymmetric Swing Bridge Stock Video - Download Video Clip Now - iStock
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Locking mechanism gears on a 1904 railroad swing bridge. Superior, WI [5100X3400] [OC] : r/MachinePorn
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The mechanism of Hawarden rail swing bridge over the river Dee near Shotton Flintshire, north Wales, UK Stock Photo - Alamy
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American Swing Bridges 1797 to 1907 | Practice Periodical on Structural Design and Construction | Vol 16, No 4
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