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This form of canal drawbridge can be seen on the Caldon Canal in North Staffordshire. Sometimes the canal cuts across a farmer’s fields, and a drawbridge like this serves as a connecting link between the fields concerned. The bridge is too low for canal boats to pass under, so it can be raised using a winch. The wooden beams at the top are weighted at one end to serve as a counterweight so that it is relatively easy to raise and lower the bridge as required.