Network Rail’s bridge replacement programme is advancing with cutting-edge designs.
- The AVA bridge, a notable addition, is set for installation at Stowmarket station in 2025.
- Efforts are focused on producing standard designs to enhance accessibility and reduce costs.
- The AVA project prioritises modern construction methods to improve efficiency and minimise impact.
- Challenges such as the pandemic have delayed projects, but progress continues
Network Rail’s footbridge replacement programme is making significant strides in modernising infrastructure across the UK. A key development is the AVA bridge, highlighted in the updated Footbridges & Subways Design Manual. It represents a major shift towards introducing innovative and efficient designs to replace outdated structures. Set for its inaugural installation at Stowmarket station in 2025, the AVA bridge exemplifies the forward-thinking focus of Network Rail’s efforts.
The necessity for a new approach to footbridge construction emerged due to the incompatibility of traditional designs with modern requirements for accessibility, especially the inclusion of lifts. Network Rail, overseeing more than 2,400 station and non-station footbridges, aims to significantly increase the replacement rate of these structures. By implementing a catalogue of approved standard designs, they aspire to achieve greater efficiency and cost-effectiveness, moving beyond the limited scope of previous methodologies.
The development of the AVA bridge stems from a collaborative effort between Network Rail and diverse engineering and architectural experts. This partnership sought to apply modern construction techniques that would maximise off-site manufacturing and preassembly. The aim is to not only save time and costs during installation but also to ensure minimal disruption to station operations. The project, which faced delays due to the COVID-19 pandemic and logistical challenges, has resumed with renewed momentum.
Chris Wise from Expedition Engineering explains that the AVA bridge’s name reflects its design, featuring two stable ends and a central spanning element, forming a prismatic shape. This innovative approach focuses on modularity, allowing for easy adaptation to various settings while maintaining a consistent aesthetic. The bridge is built with bead-blasted stainless steel, minimising maintenance and enhancing durability with a 120-year design life.
Despite setbacks such as the pandemic and changes in contractors, the AVA bridge project has reached a stage where it’s ready to be showcased to the public. Its reduced installation time and advanced lift systems demonstrate a significant leap in efficiency and cost-effectiveness. The lift modules, designed by ARX, arrive ready-assembled and are quickly installed, underscoring the project’s emphasis on streamlining processes.
The AVA bridge signifies a broader shift towards a manufacturing-led approach rather than traditional fabrication, aiming for higher industrialisation in construction. While its official recognition within Network Rail’s standard design catalogue is pending, its innovative features could potentially define future infrastructure projects across the network.
Network Rail’s innovative bridge designs mark a pivotal step towards modernising and streamlining UK rail infrastructure.
