Wilmington Swing Bridge
at Sculcoates, Kingston-upon-Hull
The first swing bridge was erected by Thomas Cabry in 1853, to carry the Victoria, or East Dock, Railway over the River Hull.[1]
The above source, and this link, show photographs of the first and second bridges. The first bridge had relatively shallow plate girders, but with bracing using king posts.
1907 Second bridge opened.
1968 Closed to rail traffic
The bridge was designed by J. Triffitt, under the superintendence of W. J. Cudworth of the North Eastern Railway. Mr W McD. Malt was the resident engineer on the work, and Harold Bruff assisted in the preparation of drawings and in the superintendence of the work. The chief contractors for the work were Harman and Langton, of Hull, and the subcontractors for the steelwork were John Butler and Co of Stanningley, Leeds, who entrusted the erection to R Woods, of Westminster.
The machinery for turning the bridge and withdrawing the wedges was designed by Mr Wilson Worsdell, whose contractors were Cowans, Sheldon and Co. The signalling and overhead masts were supplied by McKenzie and Holland, Worcester. 'In order to facilitate the withdrawal of the wedges by hand when required, by taking the weight off the wedges, two hydraulic rams are provided at each end of the bridge. These rams are capable of lifting 50 tons.
The above information, together with excellent photos and drawings, is taken from the 'Forgotten Relics' website[2], being transcribed from Engineering 1908/01/31 and Engineering 1908/02/21.
Two of many Geograph entries here and here.
Historic England listing here.