Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,018 pages of information and 229,346 images on early companies, their products and the people who designed and built them.
in Newhaven Harbour, Sussex.
This was the second of three movable bridges crossing the River Ouse in the harbour, and carried road and rail traffic. It was turned manually by a large capstan at the centre of the bridge.
A good overview may be found here.