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Wansford Bridge
Wansford, Cambridgeshire
associated engineer
Sir Owen Williams
date  1925 - 1928
era  Modern  |  category  Bridge  |  reference  TL075994
ICE reference number  HEW 51
A mass concrete bridge built to carry the A1 across the River Nene at Wansford, and similar in scale and structure to Williams's Spey Bridge, built in the same period.
The valley is 330ft wide and 30ft deep. The bridge consists of three arches, of which the central spans the Nene. It is 109ft wide, with flanking arches of 50ft each between abutments. All rise 15ft so that the central, wider arch is markedly flatter.
As with the Spey Bridge, prominent expansion joints emphasise the bridge's structure. Hollowed arches in the spandrels lighten the sense of mass: two in each haunch of the main arch, and on at each end of the side arches. The emphatic, angled piers are also hollowed.
During construction, each arch was given three temporary steel hinges to allow the unreinforced concrete to settle. These were grouted up once the bridge was fully loaded.
Consultant Architect: Maxwell Ayrton
reference sources   LG/SJ

Wansford Bridge