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Grade II listed railway viaduct

Client:	Network Rail
Location:	Littleborough, near Rochdale
Reference No:	CS009

Designed by George Stephenson and completed in 1839, this historically significant viaduct is Grade II listed and carries railway lines over the busy A58 intersection at Littleborough.

Defects

Due to long-term effects of normal wear and tear, compounded by a shallow depth of fill above, this seven span viaduct was showing a variety of structural faults.
The principle arch had developed five longitudinal cracks creating a series of arches and further weakening the structure.
Vehicle impact damage to the barrel and stonework voussoirs on the spandrel walls.

A number of solutions were considered by English Heritage, Network Rail and its framework contractor, Edmund Nuttall, but none could solve the technical problems without adversely affecting the appearance.

Helifix Solution

A systematic bespoke approach using a combination of concealed Helibeam bed joint reinforcement and pinning, using grouted CemTies, to reinstate full structural integrity.
Specialist masonry repairs to improve damaged stonework.
Rail services totally unaffected.
All works completed on schedule and to budget.
Viaduct sympathetically restored both structurally and visually.