Murphy installed a pedestrian link from Bolton train station to the newly constructed bus interchange through a 102m long, fully-encapsulated footbridge. The project was part of the upgrade of Bolton transport infrastructure by Transport for Greater Manchester (TfGM).
Due to the town centre location and surrounding construction works, the project involved a large amount of interaction with transport bodies, designers, councils and other contractors.
The project had a small window of opportunity to install both the foundations and the bridge span, due to the modifications of track and platforms, as well as the installation of overhead lines happening below the bridge at Bolton Station, as part of the North West Electrification Project. These unique circumstances presented a challenge to us, which the team worked tirelessly to overcome and ultimately deliver the scheme on time.
The structure of the bridge was made up of four concrete piers with steel support columns, one being a collision pier adjacent to existing rail lines. The bridge was fabricated to a truss design, using box sections with the main cords being 400mm by 300mm by 16mm RHS. The bridge was constructed in four spans. Two of these were 32m long by 4m wide and 3.8m high. The other two spans were 17m and 21m long. Sections were fabricated at the Murphy Yard in Newbridge, Co. Kildare and transported to the UK for painting. They were then taken to site for cladding and installation.
The bridge is fully encapsulated and clad in a number of high specification materials including Kalzip, Kalwall, curtain walling and louvers with stainless steel balustrades. The inside of the bridge received stainless steel handrails, specialist flooring, suspended ceiling and lighting. A security and public announcement system was also installed.
The enhancement project was part of the upgrade of the Bolton transport infrastructure and the electrification of the MVE lines.
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