Guthrie rolling bridge

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For the London bridge, see The Rolling Bridge.

A Guthrie rolling bridge was a Victorian era kind of retractable bridge, an 18th century version of the drawbridge. It was commonly installed as the access across the narrow steep sided ditches chracteristic of the polygonal forts of this era.

Rolling bridges were unhinged, and remained horizontal as they were retracted within the gates of a fortification.[1]

Two such bridges are installed at Fort Nelson, Portsmouth, United Kingdom.

[edit] External links

• Information on Fort Nelson