Youngs Crossing upgrade, Joyner

Youngs Crossing Road closed due to flooding

Moreton Bay Regional Council is working to upgrade Youngs Crossing Road at Joyner where it crosses the North Pine River to improve its flood immunity, safety and vehicle carrying capacity given forecast growth in population, development and traffic volumes.

With the Youngs Crossing Road transport corridor being a critical link to the South East Queensland road network, this upgrade is one of the biggest road infrastructure projects to be delivered by Council.

In September 2020, Council sought community feedback on two proposed route alignment options for the upgrade and received an overwhelming response and high level of community interest in the project.

Based on the outcomes of this consultation, funding considerations and further technical assessments, Council has now formally resolved to proceed with the upgrade option that largely follows the existing Youngs Crossing Road alignment (Option 1) at its 12 November 2020 General Meeting

Option 1 - Youngs Crossing Road alignment

The upgrade will involve constructing a new four-lane bridge and associated road works (approximately 940m in length including a 160m bridge) that generally follows the existing alignment of Youngs Crossing Road.

The new bridge will be elevated approximately 10 metres to provide long-term flood protection.

The upgrade is expected to be constructed in several sections with some road clorsures and temporary detours required. The construction program will be developed during detail design.

State Government-controlled Dayboro Road will need upgrading to four lanes between Youngs Crossing Road and Beeville Road at some stage in future to cater for increased traffic volumes. This upgrade has been estimated to cost $18 million and will be the responsibility of the Department of Transport and Main Roads.  Council will continue to advocate for additional funding from the state and federal governments, including funding from the state government for the intersection in Dayboro. 

Decision-making process

A comprehensive report(PDF, 109MB) was developed for Council’s consideration at the General Meeting, recommending Option 1 for the Youngs Crossing Road upgrade.

Council’s project team made this recommendation based on evaluating the following key factors:

  • Cost/funding - the $14.35 million cost difference to Council between the two options, due to the Federal Government’s $7.75 million funding contribution being intended only for Option 1, is a major factor and aligns in favour of Option 1.
  • Community and stakeholder feedback - community consultation undertaken by Council showed strong community preference for Option 1. State and Federal Government local members also expressed their preference for Option 1.
  • Environment - an additional ecological survey and arborist investigation have provided better understanding of the environmental impacts associated with Option 1 and reassurance they can be significantly reduced by adopting appropriate mitigation measures.
  • Technical considerations - engineering assessments of factors such as transport and traffic modelling, flood modelling and immunity levels, asset maintenance, issues and constraints identified in the concept design phase, and constructability have informed the recommendation.

Council’s strategic plans and policies, results of a multi-criteria assessment (MCA) process and the project’s history were also considered by Council’s project team in forming the recommendation contained in the report to Council’s General Meeting.

Community consultation

Council sought community feedback on the proposed upgrade options between 2 September and 2 October 2020.

With over 4,300 responses, the community engagement progress gave insights into preferences and concerns about the anticipated impacts of each option. The community expressed a clear preference for Option 1, with 66 per cent of respondents favouring this option.

A consultation report(PDF, 11MB) outlines the outcomes and information about the engagement process.

Council would like to thank the community for the extensive level of feedback received throughout the consultation period.

The detailed feedback and issues raised will also help inform future stages of the project design and solutions development process. 

Next steps

The preferred option will now progress to detailed design.

More in-depth planning and design will be undertaken during this next phase including detailed environmental and cultural heritage assessments, bridge capacity and road formation design, visual amenity considerations, constructability, noise abatement measures, and traffic and road safety assessments.

As the project progresses, the project team will continue to engage with the community and stakeholders to refine the final alignment, work through concerns, and share the latest information and designs.

See FAQs for more information.

Minimising environmental impacts

The significance of koala populations and native flora and fauna in and around the project area are key considerations for Council.

This project will affect some areas of environmental significance, mostly through the clearing of vegetation to accommodate the new bridge and its roadway approaches. To achieve the best outcome, Council is working to reduce these impacts as much as possible.

Specialist environmental consultants have been engaged to assess the impacts and advise mitigation measures. Environment assessments undertaken so far include:

  • a preliminary environmental and cultural heritage assessment
  • impact assessments to identify plant and animal species of national significance
  • ecological survey of the vegetation in the vicinity of Option 1
  • tree transplanting feasibility study.

Some of the mitigation measures Council will be exploring in more depth during the detailed design phase include the use of koala exclusion fencing and other wildlife movement infrastructure, replanting and propagating trees and vegetation, erosion/sediment controls and timing major works to occur outside koala breeding season.

Environmental impacts and cultural heritage assessments will be managed in line with Commonwealth and State legislation in addition to Council’s environment management framework.

Project funding

Based on the concept design, the current cost estimate of the upgrade is $49.5 million.

The Australian Government’s $7.75 million funding contribution through the Urban Congestion Fund for this alignment option means that at this early stage, the cost to Council is forecast to be $41.75 million.

More detailed cost estimations will be undertaken during the detailed design stage as the road alignment and bridge design is refined.

Council has budgeted $40 million towards the project and will continue to advocate on behalf of the community to seek further funding from the State and Federal Governments for this important regional road corridor.

Project background information

Youngs Crossing Road is an important north-south arterial road connecting the Moreton Bay Region with Brisbane City.

The road is used by approximately 20,000 vehicles every day, and traffic is forecast to increase to 22,500 vehicles by 2026 and 27,500 vehicles by 2036.

Council has been progressively upgrading sections of Youngs Crossing Road to four lanes to cater for this growth.

Council began preliminary planning and design work in late 2019 to upgrade the road where it crosses the North Pine River at Youngs Crossing.

Youngs Crossing Road has low flood immunity and since 2010 has closed an average of 4.5 days a year following rain events and water releases from North Pine Dam, causing delays, congestion on local roads and economic impacts.

Council developed concept designs for two proposed upgrade options as part of the project’s early planning and design phase and sought community feedback on these options:

Option 1 – Youngs Crossing Road existing alignment

Option 2 – Andrew Petrie Drive alignment

Council made a formal decision to select Option 1 (Youngs Crossing Road alignment) at the General Meeting held on the 12 November 2020. You can view the Council briefing reports for more information about the project:


Youngs Crossing Road, Joyner 4500  View map

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