It was built in February 1912 by David Rowell & Co., who were prolific builders of many similar steel suspension footbridges. Unusually for the genre, it has been considered worthy of a Grade II Listing, although the website linked below has it by the wrong name.
A sign on the bridge states that "swinging or jumping on this bridge is strictly forbidden", suggesting a liveliness that I don't recall noticing.
I'm conscious that I know very little of the bridge's history, and as for its appearance, can only state that I am a huge fan of unpretentious, lightweight suspension footbridges such as this. So enough verbiage, here are some photos!