It was built as part of the first section of the M56 North Cheshire Motorway, also initially known as the Cheshire East-West Motorway, five miles from junctions 14
Hapsford Interchange to 12 at the
A557. The contract was given in early March 1968, to be finished by September 1970, to the
Christiani-
Shand consortium (its headquarters were at Romney House, on
Marsham Street in London) for £3,146,387.
Design It was designed from 1964 to 1967. It was designed by Husband and Company Consulting Engineers of
Sheffield.
Construction Work started on the viaduct on 1 April 1968. Work began on the eight-mile motorway in December 1968. The bridge crosses a flood plain. The foundations had 2,376
reinforced concrete piles. Thirty two 125-foot concrete 100-tonne beams were put into place in July 1970; the concrete beams were made by Matthews & Mumby of Windmill Lane,
Denton, Greater Manchester. The project manager for Christiani-Shand was Mr A.K. Robertson. 31-year-old Harry Russon was killed instantly on the bridge construction on Wednesday 6 August 1969. The construction of the five-mile motorway was completed in December 1970. The five-mile motorway opened for traffic at 11am on Sunday 21 February 1971; the viaduct would open with hard shoulders; the
Thelwall Viaduct on the
M6 was not originally built with a
hard shoulder. The section to
Preston Brook at junction 11 opened on Thursday 23 September 1971. ==Structure==