Reconstruction of Viaduct

Project Background Reconstruction of Arnside Viaduct Arnside Viaduct is a 51 span structure carrying the Carnforth and Client Whitehaven Line over the estuary of the River Kent immediately UK Department for Transport to the west of Arnside Station. Location Originally constructed in 1856 as a single line viaduct, the structure , North West , UK was extended to twin track in 1863. After 150 years of service, Start Date it was in need of renewal. Over the years the viaduct had deteriorated, 2010 resulting in the bridge’s load capacity being reduced and a speed

restriction being enforced. End Date 2011 The viaduct is located in a site of Special Scientific Interest within

a Protected National Park, which is also an area of outstanding Duration natural beauty. This challenging project has completed on time and on 12 months budget. Contract Value £11m

Services Provided Structures (bridges, tunnels and earthworks), programme management, feasibility design

For more information please visit www.networkrailconsulting.com Scope of Works Key Project Outputs The works comprised the renewal The main works were successfully of the entire 51 span superstructure delivered within a 16 week line with prefabricated deck girder units closure. (each averaging 24 tonnes in weight), Working on one line at a time, the together with the replacement of the railway tracks were removed to expose jointed track with continuous rails the viaduct decks, which were cut into directly fastened to the deck and sections, lifted out by special road/ refurbishment of the abutments. rail machines and taken away. Gantry Working on one line at a time, the cranes were then erected which moved railway tracks were removed to expose along the viaduct lifting the new the viaduct decks, which were cut into decks into position, before base plates sections, lifted out by special road/ were bolted in place to take the new rail machines and taken away. Gantry continuously welded track. cranes were then erected which moved The upgrade has delivered major along the viaduct lifting the new structural improvements to the viaduct decks into position, before base plates and benefits to passengers by way of were bolted in place to take the new a smoother, quieter and faster ride continuously welded track. across the Estuary. Line speeds over the viaduct will be substantially increased delivering passenger time savings.

For more information please visit www.networkrailconsulting.com