Murphy was remitted with the removal and reconstruction of two life expired assets which share the same substructure. The bridge was designed with a number of key development issues including water management problems, non-compliant ballast depths, the requirement for improved headroom and advanced procurement due to the tight implementation dates established by the client.
In conjunction with our design team, Arcadis, we developed a combined water management system that looked to ensure drainage was taken to the far ends of the bridges through falls in the bridge decks. A central concrete slab was used to fall water away from the pier, along with bespoke bearing and waterproofing details to all ends of the bridges. The pway team needed to develop approx. 200mm lift alignment over the bridge to give compliant ballast depths and improve headroom to the canal and road. The advance procurement requirements for steel work added extra pressure to the design team to establish early engagement with the fabricator who was developing and building the bridge alongside the design teams drawing development.