"Under the Viaduct: Neglected Spaces No Longer" - Research Overview
Foreword
The concept of transforming underutilized viaduct spaces originated from discussions between Arup and the New South Wales Roads and Maritime Services (RMS) regarding the potential for collaboration and leveraging differing perspectives. The initial focus was on revitalizing the 80-year-old Sydney Harbour Bridge viaduct undercroft space, which has since been transformed into a state-of-the-art office space for RMS, enhancing security, saving costs, and contributing to the local economy.
Executive Summary
"Under the Viaduct: Neglected Space No Longer" is a comprehensive study initiated by Arup in partnership with RMS. It explores the potential for innovative reuse of underpasses beneath elevated road and rail structures worldwide. The research aims to:
- Identify International Case Studies: Gather insights from successful global examples where viaduct undercroft spaces have been repurposed.
- Categorize Viaduct Types: Divide elevated transport infrastructure into distinct categories for detailed examination.
- Demonstrate Creative Potential: Through design exercises, showcase the versatility of undercroft activation.
- Address Technical, Institutional, and Policy Challenges: Highlight obstacles and opportunities in implementing viaduct activation.
- Capture Stakeholder Insights: Engage with experts and stakeholders to understand practical considerations.
- Evaluate Benefits: Assess the social, environmental, and economic advantages of viaduct activation.
- Identify Design Opportunities: Pinpoint specific sites suitable for activation.
- Develop Delivery Recommendations: Offer strategies for implementing viaduct activation projects effectively.
Key Findings
- Innovative Use of Infrastructure: Viaduct spaces offer unique opportunities for creative reuse beyond conventional transportation purposes.
- Value Creation: Activation can contribute to community benefit, enhance project viability, and improve investment returns.
- Process Guidelines: Recommendations for integrating viaduct activation into project lifecycles, emphasizing community engagement, flexibility, and public value demonstration.
- Challenges and Solutions: Identification of key hurdles and strategies to overcome them, including planning, design, and operational considerations.
Methodology
The study employed an "enquiry-by-design" approach, involving deep dives into seven international case studies to analyze challenges and opportunities for transformation. This method facilitated a thorough understanding of best practices and potential adaptations.
Recommendations for Further Research
- Strengthening Evidence Base: Conduct more detailed research to validate findings and expand the scope of potential applications.
- Business Case Preparation: Develop frameworks for effectively preparing business cases that highlight the benefits of viaduct activation.
- Regulatory Frameworks: Advocate for policies that facilitate rather than constrain the activation of underpasses.
- Structural Design for Adaptability: Explore design principles that ensure structures can accommodate future changes.
- Planning for Flexibility: Implement strategies that allow for dynamic use of viaduct spaces.
- Community Involvement: Enhance collaboration with local communities to ensure activation aligns with their needs and aspirations.
This research serves as a foundational guide for urban planners, policymakers, and infrastructure developers seeking to maximize the potential of existing and future viaduct infrastructure, contributing to sustainable and livable cities.
