Caboolture–Bribie Island Road, Bribie Island bridge, planning

The department has completed a business case for the construction of a new bridge to Bribie Island.

The existing Bribie Island bridge was constructed in 1963 and consists of 2 traffic lanes and a narrow pedestrian pathway. The proposal for a new bridge forms part of the Queensland Government's broader strategy to upgrade the Caboolture-Bribie Island Road to a 4-lane standard.

The business case draws on previous studies and incorporates insights from technical investigations and community consultations. Download the business case summary. This has led to the proposal of a concept design for a new bridge.

The new bridge will feature 2 eastbound traffic lanes and a dedicated active transport path for bicycle riders, pedestrians, and users of mobility devices. The active transport path on the northern side of the bridge will improve safety and useability, and offer uninterrupted views of the iconic Glass House Mountains.

A detailed assessment found the existing bridge structure to be performing well and will sustain traffic for the foreseeable future. The concept design proposes to fully utilise the existing bridge as a traffic asset for 2 westbound traffic lanes.

Also part of the plan is to widen the Caboolture-Bribie Island Road to 4 lanes, between Bestmann Road East and Benabrow Avenue, as well as realigning the Sylvan Beach Esplanade intersection.

The concept design optimises cost, sustainability, and flexibility. It uses the existing bridge as a long-term operational traffic asset and is a sustainable approach to managing the transport network. This reduces the width, cost, and impact associated with constructing a new bridge.

The concept design aligns with the future vision of 4 lanes on Caboolture-Bribie Island Road. By delaying the need to provide a wider bridge until the existing bridge has reached its service life, it provides a flexible and cost-effective approach to investment.

Benefits

Improves safety
Better road access
Accessibility
Reduces travel time
Contributes to economy
Contributes to regional growth
Better active transport
Improves network efficiency

Key features

New 2-lane, eastbound traffic bridge with road shoulders and separated active transport path.
Existing bridge to provide 2 westbound traffic lanes.
Crossing points on the roads that approach the bridges to transfer traffic between the bridges if required.
Improved resilience due to the ability to manage incidents or maintenance by running 2-way traffic on either bridge if required.
Sylvan Beach Esplanade intersection realigned to provide safer turns.
Widening Caboolture-Bribie Island Road to 4 lanes from Bestmann Road East to Benabrow Avenue.
Traffic signals at Sandstone Point Hotel access.
Active transport path connections on the island and the mainland.
Pelican perches that overhang the water on both bridges.

Funding

This project was fully funded by the Queensland Government.

Investment ID: 1862714

Total investment: ^$5.2 million

Queensland Government: ^$5.2 million

Current status

The business case was completed in December 2024. The department undertook technical investigations and community consultation as part of the project assessment.

We received over 4,000 responses from our 2-phase community consultation.

Phase 1 community consultation was held between January and February 2023. Download the 2023 consultation report for more information.
Phase 2 was held between January and March 2024. Download the 2024 consultation report for more information.

The Queensland Government will now consider the business case and timeframes for funding, design, and construction.