Huntspill Viaduct Refurbishment
Client
Morgan Sindall / Network Rail
Project Description
Huntspill Viaduct is a five span railway viaduct located in the Western Region. The structure comprises four concrete spans and one steel span. The steel span (span 3) comprises steel main girders, steel cross girders, steel railbearers and steel deck plates. The concrete spans (Spans 1, 2, 4 & 5) comprise reinforced concrete slabs with reinforced concrete upstands and are continuous over central piers. The substructure comprises mass concrete piers and abutments with brickwork facing, these are believed to be piled based on the likely ground conditions.
Cass Hayward Role(s)
- Develop concrete repairs to superstructure (spans 1,2,4 and 5).
- Develop Condition Led Steelwork Repairs (span 3)
- Develop Repairs to substructure
- Repair and improve retention along ballast walls
- Develop waterproofing detail across all five spans
- Carry out advanced assessment to concrete fans that had previously been found to not achieve route availability.
- Develop strengthening scheme to railbearer to span 3 to meet capability requirements
- Design handrail replacement throughout
- Design scour protection works to reduce scour risk Grit blast and paint span 3
Project Statistics
- Contract Value circa £1.73M.
- Spans approximately 18m each.
Special Features
- More analysis showed that concrete spans and existing railbearers achieved rout availability without the need for strengthening.
- BaFix system specified to replace ballast walls. This product would outlast any repair/height increase work carried out using brickwork and easier to transport and handle.
- Developed galvanic anode protection scheme and concrete repairs to prolong life of concrete spans.