What have we done to date?
Last year the NZ Transport Agency launched an investigation of the Wairau and Opawa Bridges to improve travel on State Highway 1 north of Blenheim. The investigation of these bridges was identified as part of the Government’s Accelerated Regional Roading Package, which provided funding to progress a selection of regionally important state highway projects to address economic efficiency, safety, and resilience issues on our regional transport networks.
We considered strengthening, replacing or duplicating both bridges. Following an earlier investigation, the Wairau Bridge was found to be in serviceable condition. It has been certified to carry heavier vehicles and can be effectively maintained. Replacement of this bridge may be considered in the future. The Opawa Bridge, however, was identified for replacement. Upgrading it is a high priority for the Marlborough District Council and residents.
From 11 May to 9 June we asked for feedback from the community on the proposal. We received more than 170 feedback forms and met with about 90 residents during two public information sessions in Blenheim. The feedback is being collated, analysed, and will contribute to a revised proposal.
What are the problems and benefits?
Early investigation of the Opawa Bridge confirmed it is too narrow for some vehicles, large freight vehicles in particular. We have also learned the bridge is vulnerable in an earthquake and is susceptible to damage from heavy floods.
At the heart of our investigation work is our key objective to keep people and goods moving along State Highway 1 between Blenheim and Picton. We want to:
- make journey times more reliable
- make sure freight moves efficiently
- make the region more resilient to natural disasters and
- support State Highway 1 as a strategic freight route between Picton and Christchurch.
The specific benefits of investing to address the Opawa Bridge’s identified problems (including weightings) are:
- Benefit 1 (70%): Increased throughput of freight and light vehicles and greater certainty of state highway journey
- Benefit 2 (30%): Greater structural resilience to natural hazard events, resulting in increased availability and access.
Were other options considered for the investigation?
Yes, as part of our investigations, we developed a long list of all possible options to address the two problems. Thirteen separate options were investigated and assessed, including a do-nothing option, using a variety of criteria. You can read more about all of the options and the detailed analysis in the ‘Consideration of Options’ Report
How will public feedback be used from engagement on the PBC?
We will refine the preferred bridge replacement proposal, taking on board the feedback received.
What will the bridge look like?
We are asking for your feedback now on what elements you’d like us to consider in the new bridge structure or design so we can include them in our planning. We expect to share draft drawings of the bridge once designs have been prepared so the community can contribute to its appearance.
Will there be further opportunities to be involved in the project?
Will there be further opportunities to be involved in the project?
Yes, on the bridge design we expect to share draft drawings of the bridge once designs have been prepared so the community can contribute to its appearance.
What are the next steps?
We are now refining the preferred bridge replacement proposal, taking on board the feedback received. We are continuing to work with key stakeholders, potentially affected landowners, and the local community and seek input on the potential design of the replacement bridge.
We aim to seek Resource Management Act consents early in 2017. Should consents be granted, we expect construction would start in 2018.
After the engagement period has ended, we will refine the preferred bridge replacement proposal taking on board the feedback received. We aim to seek Resource Management Act consents early in 2017.
In the meantime, we will continue to work with key stakeholders, potentially affected landowners, and the local community and seek input on the potential design of the replacement bridge. Should consents be granted, we expect construction would start in 2018.