Delivering better and more reliable journeys.
The Berry to Bomaderry Upgrade transformed a critical section of the Princes Highway, enhancing connectivity for local communities and regional businesses. Commissioned by Transport for NSW (TfNSW), the project delivered a safer, higher-capacity road designed to support future growth.
The project upgraded over 10 km of highway from two to four lanes, with a wide central median allowing for future expansion to six lanes. Completed in 2022, the upgrade improved traffic flow, enhanced safety, and modernised infrastructure for long-term regional development.
Key construction works were staged on live roads, requiring sophisticated traffic management, while major structural works included 14 bridges and underpasses, long-span interchanges, and significant utility relocations. The upgrade also featured vehicle breakdown bays, heavy vehicle inspection bays, and a 300m cutting.
The project ensured the environment and local communities were supported throughout construction and beyond project completion. Innovative soil remediation reduced off-site disposal, fauna crossings protected local wildlife and upgraded ITS systems improved traffic efficiency.
The project actively supported local employment, including First Nations participation, and exceeded targets for workforce diversity and skills development.
Scope
The Berry to Bomaderry upgrade encompassed extensive road, bridge, and civil works to transform a 10.3 km section of the Princes Highway, enhancing safety, capacity, and connectivity for the region.
- Upgraded 10.3km of the Princes Highway from two to four lanes, including a wide central median.
- Constructed two grade-separated interchanges with long-span weathering steel girder bridges.
- Staged construction of 10 new bridges, demolition and reconstruction of existing bridges and major culverts.
- Built major cuttings, drainage and flood mitigation structures, and heavy vehicle inspection bays.
- Modified highway geometry to reduce noise and visual impacts.
- Installed an updated Intelligent Transportation System.
10
Constructed 10 new bridges.
$5.5m
$5.5 million invested in First Nations procurement and capability building.
300,000
300,000 hours achieved without serious injury.
8.7%
8.7% First Nations participation, exceeding contract requirements.
10km
Over 10 km of road upgrades from two to four lanes.
3
Constructed three fauna crossings.
Social impact
The Berry to Bomaderry project provided social and economic benefits by focusing on workforce diversity, community and First Nations support and training opportunities:
- First Nations engagement: Over $5.5 million spent on procurement and partnerships to enhance local capabilities.
- Workforce diversity: 8.7% First Nations workforce participation.
- Safety: More than 300,000 person hours without serious injury.
- Environmental protection: Fauna crossings at Flying Fox, Jaspers Brush, and Wileys Creeks to enable safer wildlife movement.
This project was delivered by the Downer Transport Projects business which operated from December 2014 – June 2023 as part of Downer EDI Works Pty Ltd. In June 2023, DT Infrastructure Pty Ltd acquired the assets of the Downer Transport Projects business, including the transfer of approximately 1,200 employees, intellectual property rights, plant and equipment and other assets, and the novation of a number of projects which were ongoing at the time of the acquisition.