Network Rail is spearheading an initiative to modernise footbridge designs, focusing on efficiency and reduced costs.
- The AVA bridge, a pivotal element, is scheduled for installation at Stowmarket station in 2025.
- A design competition attracted innovative global entries, resulting in diverse bridge concepts including Frame, Ribbon, Beacon, and AVA.
- The AVA project, although delayed by challenges, promises reduced installation times and maintenance costs.
- Technological integration like modular lifts from ARX enhances the AVA’s functionality.
Network Rail is focusing on replacing outdated footbridge designs with the introduction of the AVA bridge, set to be installed at Stowmarket station in May 2025 by Walker Construction. This initiative aims to streamline production and enhance accessibility through the Access for All programme, tackling previous design incompatibilities with lifts.
The design journey commenced with a 2018 Royal Institute of British Architects competition, drawing 121 global submissions and resulting in innovative designs like the Frame, Ribbon, Beacon, and AVA bridges. The launch of the Footbridges & Subways Design Manual in 2020 cemented Network Rail’s commitment to transforming footbridge manufacturing processes.
Despite delays from the pandemic and supplier issues, the AVA consortium—comprising Walker Construction, Expedition Engineering, and Hawkins/Brown—persisted in advancing modular construction techniques. As of July 2024, the AVA bridge prototype was completed, showcasing advanced stainless steel cladding and modular design that is still pending standard Network Rail design status.
The AVA bridge’s key advantage lies in its rapid installation, requiring merely a 36-hour line possession, potentially reducing to 27 hours. Its low-maintenance stainless steel structure ensures long-term cost efficiency, supported by a 120-year design life.
Technologically, the AVA incorporates an innovative lift system by ARX, designed to maximise functionality in railway settings. Each lift module arrives fully assembled, facilitating quick installation and maintenance. However, the project aims for further cost reductions through bulk manufacturing efficiencies.
Phil Webb, managing director of Walker Construction, emphasises the benefits of the factory-made approach, primarily hinging on enhanced productivity and reduced financial outlay. Network Rail’s regional purchasing structure, however, limits the potential for large-volume orders that could maximise the strategy’s efficacy.
The AVA project embodies a forward-thinking strategy to utilise modern manufacturing techniques within the railway infrastructure sector, moving towards Industry 4.0 methodologies. While other bridge designs, such as the Ribbon, Beacon, and non-station Flow, are in various stages of deployment, the AVA stands as a symbol of the potential inherent in embracing contemporary design and construction innovations.
Network Rail’s ambitious project epitomises the transformative potential of modern construction methods in infrastructure.
