Tarban Creek Bridge is on Burns Bay Road, spanning Tarban Creek from Hunters Hill to Huntleys Point. It forms part of the northern approaches to the Gladesville Bridge.
The bridge is an iconic structure in the harbour of Sydney. The main arch of this bridge is a complex and distinctive structure, spanning approximately 90 metres. The bridge was opened to traffic in 1965.
Tarban Creek Bridge needs to be rehabilitated to address two issues:
- The durability of a repair system installed in 1970.
- The deteriorated condition of cross girders and bearings located at the half joints, identified during an inspection in 2008.
The NSW Government has fully funded this project to ensure the bridge performs well in the future.
The importance of design
RMS recognises the high value scenic quality of this bridge and its setting in Sydney Harbour. It is important to waterway users, residents and people that appreciate design.
RMS investigated a range of potential options to strengthen and maintain the bridge. Full details are provided in the Options report (PDF, 5MB).
As a result of this investigation, RMS shortlisted three feasible options.
Engineers and designers worked closely on all options. An urban design and visual impact assessment was also prepared. It forms Attachment A (PDF, 7MB) to the Options report .
RMS reached a view as to an option that we felt best suited the bridge aesthetically. However, the community's views are just as important.
To ensure that the most appropriate design option was selected, RMS sought the community's views on options for this rehabilitation. For details of this community consultation, see the June 2012 Community update (PDF, 5MB).
RMS examined all submissions made during the consultation period and published a Community issues report (PDF, 900KB) which identified the issues raised in submissions.
A clear majority of submissions (83%) indicated a preference for Option one – portal frame with rectangular tapered piers located outside the existing arches. RMS took this preference into account as it finalised the detailed design for the work.
Review of environmental factors
Following community consultation and environmental assessment and investigations, RMS has published the Review of environmental factors (REF) (PDF, 4MB) and determined its preferred option for the rehabilitation of Tarban Creek Bridge in Hunters Hill.
The REF describes and assesses the potential impacts of the proposal on the environment.
The report identifies Option one (portal frame with rectangular tapered piers located outside the existing arches) as the RMS preferred option with the neutral coloured new piers. This decision takes into account community feedback and, environmental and design issues.
Option one is considered to best meet the project's objectives. In comparison to the other options, Option one provides an effective repair and has been designed to be relatively open in structure minimising the visual impact. This preferred option is also buildable and maintainable.
Tenders to construct this option were invited in April 2013 and closed on 5 June 2013. The tender for the $14 million construction contract was awarded to VSL Australia Pty Ltd. Work is planned to start in September 2013 and will take up to 15 months to complete, weather permitting. The local community will be kept informed on the progress of work throughout the project.