A grade separated interchange, or flyover, with roundabouts on either side was identified as the preferred option for the Jervis Bay Road and Princes Highway intersection upgrade in November 2020.
This decision followed a thorough planning, investigation and development process including a value management workshop attended by key stakeholders and technical specialists. It was determined the preferred option would achieve the proposal objectives, was the safest option and would provide the best results for congestion, resilience and connectivity compared to other options assessed.
A review of environment factors has now been produced and is available for viewing by the public. Community submissions on the review of environment factors is open until Sunday 18 July 2021.
An upgrade of the Jervis Bay Road and Princes Highway intersection has been identified as a priority project under the Princes Highway upgrade program.
The Jervis Bay Road intersection is a key gateway along the Princes Highway corridor providing the main east-west link to the coastal villages of Huskisson, Vincentia, Hyams Beach and Jervis Bay.
The intersection has the highest volume of vehicle movements on the Princes Highway between Nowra in the north and the Victorian border in the south. Vehicle movements are about 23,070 vehicles per day on the Princes Highway and about 9,830 vehicles per day on Jervis Bay Road. This traffic volume results in significant delays and queuing on Jervis Bay Road, particularly during weekday and holiday peaks.
The existing intersection performs poorly in terms of road safety with 26 crashes recorded in the 10 years to March 2019 and a score of two out of five stars against the Australian Road Assessment Program road safety risk analysis.
The proposed intersection upgrade would:
- Improve safety for all transport users
- Reduce congestion
- Improve resilience
- Support pedestrians, cyclists and public transport users
- Grow regional economies including tourism and freight
- Improve access to local roads
A safer and more reliable intersection would help to deliver on Transport’s 20 year vision for the Princes Highway as a safe, reliable, efficient and connected transport network.
The concept design includes the following features:
- A new intersection between Jervis Bay Road and the Princes Highway, incorporating:
- Realignment of the existing Princes Highway, including widening from two lanes to a four-lane divided highway (two lanes in each direction), with median separation using flexible safety barriers, providing an uninterrupted through alignment for the Princes Highway
- An overpass bridge over Jervis Bay Road
- An unsignalised single-lane at-grade double roundabout interchange providing:
- Direct access from Jervis Bay Road and Old Princes Highway to the Princes Highway
- Direct access from the Princes Highway to Jervis Bay Road and Old Princes Highway
- Direct connection to existing properties and businesses at the Old Princes Highway
- A connection from Willowgreen Road to Old Princes Highway
- Tie-ins with the Old Princes Highway and with Jervis Bay Road
- The new highway corridor would be east of the existing highway to provide space for the western entry and exit lanes and the roundabout connecting to the Old Princes Highway. This will also improve ease of construction and reduce traffic impacts while it’s being built.
Transport for NSW has a statutory responsibility to consider the impacts of its activities on the environment.
To do this we carry out a number of environmental impact assessments and studies when planning transport infrastructure projects. This assessment is often documented in a review of environmental factors (REF).
The REF assesses the impacts of a proposal on the environment and outlines how these impacts would be eliminated, minimised, mitigated or offset both during and after construction.
About 18 hectares of land outside the existing road corridor would be directly impacted by the proposal. This includes the temporary lease of land and the full or partial acquisition of some properties.
All acquisitions are being undertaken in consultation with landowners and in accordance with the Land Acquisition (Just Terms Compensation) Act 1991 and the Transport for NSW Land Acquisition Information Guide.
The upgraded intersection would require about 15.7 hectares of native vegetation including some threatened ecological communities, to be cleared. The proposal would not significantly impact threatened species, populations or ecological communities or their habitats according to the Biodiversity Conservation Act 2016 or the Environment Protection and Biodiversity Conservation Act 1999. Biodiversity offsets would be delivered in accordance with the Transport for NSW Biodiversity Offset Guidelines.
The proposal would impact the surrounding bushland and rural residential landscape character and views due to vegetation clearing, earthworks and the introduction of new infrastructure.
The urban design and landscaping strategy for the proposal incorporates the use of materials that respond to the existing rural context and revegetation of disturbed areas with local native plant communities. Embankments would be integrated into the natural landform and setting, where practicable, with gentle slopes and consistent planting with the adjoining landscape.
Minor delays may be experienced while the intersection is being upgraded. This is due to necessary speed limit restrictions and temporary traffic diversions. Access to nearby properties may change during construction but will be maintained at all times.
There would be noise impacts associated with the construction of the intersection upgrade, affecting residences near the proposal area. There will be more information on these impacts as the proposal progresses. Construction noise impacts would be managed in accordance with the Transport for NSW Construction Noise and Vibration Guideline.
When completed, the upgraded intersection would not substantially change traffic noise in most locations. In accordance with the Transport for NSW Noise Mitigation Guideline, some properties would be considered for measures to manage operational noise impacts. At-property noise treatments are likely to be considered to mitigate operational noise impacts as the project progresses for properties that exceed the criteria for operational road traffic noise set by the NSW Road Noise Policy (DECCW, 2011). The project team will be in contact with affected residents as the project progresses.
Consultation has been carried out with registered Aboriginal parties in accordance with the Transport for NSW Procedure for Aboriginal Cultural Heritage Consultation and Investigation. The intersection upgrade would impact one known Aboriginal heritage site. An Aboriginal heritage impact permit would be sought for the proposal construction footprint in accordance with the National Parks and Wildlife Act 1974.
The proposal would improve the resilience of the intersection and increase the adaptive capacity and resilience of local communities. It would improve network reliability and safe access during emergencies including bushfire and flood.
The proposal would provide additional traffic capacity, including three-metre wide shoulders on the highway that could be used for emergency access and provide a buffer to adjacent vegetation in a bushfire scenario. The proposal would also enable movement in all directions between the highway and local roads, including turn-around capability during an incident or emergency. The proposal would provide flood immunity for the Princes Highway and Jervis Bay Road in a 1 in 100 year flood event.
The proposal supports an increase in walking and cycling and the use of public transport by:
- Providing a bus bay adjacent to the interchange, including kiss and ride spots
- Providing shared user paths along Jervis Bay Road, connecting the new bus bay and the Jervis Bay Road and Old Princes Highway road shoulders
- Setting aside space for the provision of a multimodal transport facility in the future.
The review of environmental factors identifies comprehensive safeguards and management measures that would be implemented to avoid, manage, mitigate, offset and/or monitor impacts during construction and operation of the proposal. These include best practice environmental planning and management techniques, including (but not limited to) the implementation of a construction environmental management plan and a community and stakeholder engagement plan.
Transport for NSW will collate and consider the submissions received during the public display of the REF and prepare a submissions report.
Feedback received will help further refine the design of the proposal and we will keep the community updated as the proposal progresses. Early work is on track to start in late 2022.
Content coming soon...
Contact the team
1800 570 562
Attention: Jervis Bay Road and
Princes Highway intersection Project Manager,
PO Box 477 Wollongong NSW 2500