Harringworth Viaduct is the longest masonry viaduct in the UK. Opened in 1878, the viaduct is 1,275 yards long and consists of 82 arches each 60’ high with a span of 40’. The Grade 2 listed viaduct carries the Oakham to Kettering line over the River Welland in Northamptonshire. Built from bricks which were manufactured on site, the viaduct has suffered from extensive weathering over its 140 year history.
For more than a decade Network Rail have been undertaking a programme of repair works. Initially work was carried out on the most seriously damaged areas of the viaduct, now contractor AMCO are working to complete all necessary repairs to the historic structure.
Stainless UK has been supplying products for use in repair and renovation work on the Harringworth Viaduct for the past 10 years. Initially stainless steel Grip-Bar tie bars and pattress plates were used to secure the structure. Now, in order to control vertical cracking in the brickwork 6mm stainless steel ribbed bars are being used as stitch bars in the structure. To control the horizontal cracking, 20mm stainless steel ribbed bars are being grouted into brickwork.
Work on the project is scheduled for completion in Spring 2017.