Kiama to Bomaderry Rail Upgrade Final Business Case

The Challenge

Transport for NSW oversaw the Kiama to Bomaderry (K2B) rail upgrade to improve regional connectivity and support the NSW Government’s fast rail vision. The project delivered 8 km of new track with a passing loop near Toolijooa, a second platform and upgraded signalling at Bomaderry, improved crew facilities, and new stabling options. These upgrades increased network capacity, enabled service redesign, and laid the foundation for a future fast rail link between Sydney and Bomaderry.

The Action

Polis Partners in association with Iceni undertook the following actions to deliver the Final Business Case:

• Investment Logic Mapping: Conducted investment logic mapping to align the project with strategic goals, ensuring the K2B rail upgrade meets the needs of both passengers and freight operations.
• Options Development: Developed multiple infrastructure and operational options for government consideration, including a comprehensive analysis of rail and non-rail public transport options to identify the best solution.
• Cost Benefit Analysis: Performed a detailed cost-benefit analysis to evaluate the economic impact of each option, demonstrating the value and potential returns of the K2B rail upgrade.
• Benefit Realisation: Analyzed and projected the benefits of the preferred option to ensure alignment with government priorities, highlighting the long-term positive impact on transport connectivity and regional development.
• Gateway Process: Guided the business case through the INSW Gateway Review process for approval, addressing critical recommendations and ensuring compliance with best practice guidelines.

The Results

The Final Business Case was completed in line with NSW Government best practice guidelines and submitted to NSW Treasury. The comprehensive analysis and strategic alignment ensured that the project met the necessary criteria for funding and approval.