A design and construct alliance between TMR, SWC and Arup. This project involved a pedestrian and cycle link between the existing route north of College Road and Roma Street Parklands and the Normanby Bus Station The scope of works included a jacked underpass below College Road, segmental retaining walls, reinforced concrete retaining walls, an elevated walkway, CCTV, lighting and various links to existing pathways.

The steep and constrained site between Queensland Rail, the Department of Public Works and the Brisbane Grammar School, as well as the impact of other stakeholders contributed to the complexity of the project.

This project saw several significant innovative solutions which contributed to a more aesthetic, a safer and environmentally sustainable final product.

The original cut and cover underpass beneath the busy College Road was changed to a jacked underpass where precast concrete box units were ‘pushed’ from one side of the road (with large hydraulic rams pushing off a purpose built ‘temporary’ thrust block) while an excavator removed the spoil from inside a steel cutting shield at the front of the units. There were no traffic interruptions and no disruptions to services.

Other innovations, design changes and value adding solutions included:

• Lengthening of the footbridge to decrease the scope of work to retaining walls, improve aesthetics and improve safety by removing ‘dark’ areas;
• Re-alignment of pathways to avoid tree removals and to reduce requirements for retaining walls;
• Redesign of stormwater system to improve safety and minimize risk during construction and to ensure all stormwater collected on the site is diverted via an existing gross pollutant trap to the Roma Street Parkland lake

A design and construct alliance between TMR, SWC and Arup. This project involved a pedestrian and cycle link between the existing route north of College Road and Roma Street Parklands and the Normanby Bus Station The scope of works included a jacked underpass below College Road, segmental retaining walls, reinforced concrete retaining walls, an elevated walkway, CCTV, lighting and various links to existing pathways.

The steep and constrained site between Queensland Rail, the Department of Public Works and the Brisbane Grammar School, as well as the impact of other stakeholders contributed to the complexity of the project.

This project saw several significant innovative solutions which contributed to a more aesthetic, a safer and environmentally sustainable final product.

The original cut and cover underpass beneath the busy College Road was changed to a jacked underpass where precast concrete box units were ‘pushed’ from one side of the road (with large hydraulic rams pushing off a purpose built ‘temporary’ thrust block) while an excavator removed the spoil from inside a steel cutting shield at the front of the units. There were no traffic interruptions and no disruptions to services.

Other innovations, design changes and value adding solutions included:

• Lengthening of the footbridge to decrease the scope of work to retaining walls, improve aesthetics and improve safety by removing ‘dark’ areas;
• Re-alignment of pathways to avoid tree removals and to reduce requirements for retaining walls;
• Redesign of stormwater system to improve safety and minimize risk during construction and to ensure all stormwater collected on the site is diverted via an existing gross pollutant trap to the Roma Street Parkland lake