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Kangaroo Point Green Bridge

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Kangaroo Point Green Bridge
Bridge under construction in July 2024
CarriesPedestrians and cyclists
CrossesBrisbane River
LocaleBrisbane, Queensland, Australia
Other name(s)Alice Street Bridge
Characteristics
DesignSteel cable stayed bridge
Total length470 metres (1,540 ft)
Width6.8 metres (22 ft)
Clearance below11.4 metres (37 ft)-12.7 metres (42 ft) from high water level to the bridge deck

The Kangaroo Point Green Bridge is an under-construction pedestrian and cyclist bridge across the Brisbane River in Brisbane, Australia. The bridge will connect the suburb of Kangaroo Point with the Brisbane CBD.[1]

The design concept for the bridge is a single-mast cable stayed structure which will align the Alice Street–Edward Street intersection in the City with Scott Street, Kangaroo Point north from the Thornton Street ferry wharf. Construction was awarded in 2021 to BESIX Group's Australian subsidiary, BESIX Watpac.[2]

The bridge's construction cost was initially expected to be $190 million.[3] In September 2023, it was announced the bridge would cost $299 million.[4] 30 boat moorings on the Brisbane River were removed for the bridge's construction.[5]

Design

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The reference design for the bridge was completed by Cox and Arup.[6] The single-mast cable stayed structure has a length of 470 metres (1,540 feet) with a width of 6.8 metres (22 feet) reaching a height of 11.4 to 12.7 metres (37 to 42 feet) from high water level to the bridge deck, which is the same height as Victoria and Captain Cook bridges. The final design and documentation was developed by Blight Rayner Architecture and Dissing + Weitling  as part of Connect Brisbane consortium with Besix Watpac as Managing Contractor. The redesign includes the  optimisation of the 4 pronged mast by introducing a cruciform mast tie, refining the original sketch  and making it more structurally efficient. The redesign of the Kangaroo Point pier, opens up to C.T. White Park and employs a curated selection of angular  geometries to create a cohesive design.  The new design also incorporates the addition of a boutique restaurant over the river and a cafe at the city end.[3]

History

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The bridge construction was included in the Brisbane City Master Plan 2014 as a priority project. It was expected that the construction of the bridge would be completed within five years.[7] On 31 October 2016, council commenced geotechnical investigative works.[8]

In August 2018, the state government offered funding to the city council to develop a business case.[9] In November 2020, the Brisbane City Council released Draft Reference Design Consultation Report for the bridge. A preliminary business case for the project was expected in late 2021.[10]

Construction of the bridge began in 2021 and was expected to be completed in 2023.[11] This date was later delayed until 15th of December 2024.[4][12]

Integration and Connectivity

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The Kangaroo Point Green Bridge significantly enhancesBike path connectivity between the Brisbane CBD and Kangaroo Point. It integrates seamlessly with existing and planned public transport services, facilitating easier movement between the city and eastern suburbs.

Project Features

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  • Length and Structure.

The bridge spans approximately 460 metres with an elegant single-mast cable-stayed design, minimizing visual impact while complementing the city skyline.

  • Dedicated Paths.

Includes dedicated pedestrian and cycle paths, with a minimum width of 6.8 metres.

  • High-Quality Landings.

Features high-quality landing points that connect and activate communities on either side of the Brisbane River, including upgraded public realms and enhanced connectivity for pedestrians and cyclists.

  • Maintenance Access.

Safetylyne’s advanced ladder cable system and Canopy Horizontal Lifelines and Static Lines play a crucial role in protecting maintenance staff responsible for the bridge's ongoing upkeep. These systems are designed to facilitate safe access while supporting Brisbane City Council’s long-term maintenance objectives, helping to preserve the landmark’s condition and potentially extending its lifespan. [13]


Environmental and Social Impact

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  • Green Features.

Incorporates design elements like solar panels, cooling vegetation, and shade cover along the length of the bridge.

  • Community Hub.

The bridge features unique dining venues such as an above-water restaurant and bar, and a riverside café, creating new social spaces for residents and visitors.

Offers panoramic views of the river and city, with rest nodes for seating and shade.

  • Signalized Crossing.

A new signalized crossing at Edward and Alice Streets provides safe, continuous access between the bridge and the city center.

See also

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References

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  1. ^ Kim Stephens (16 September 2013). "New bridge for Brisbane?". Brisbane Times. Fairfax Media. Retrieved 24 November 2014.
  2. ^ "Besix to build half-kilometre-long pedestrian bridge in Brisbane". Global Construction Review. 30 June 2021. Retrieved 11 May 2022.
  3. ^ a b Stone, Lucy (29 June 2021). "Brisbane's $190m Kangaroo Point green bridge to host restaurant and bar". ABC News. Australian Broadcasting Corporation. Retrieved 1 June 2023.
  4. ^ a b Dennien, Matt (9 September 2023). "Kangaroo Point bridge build hits halfway mark – and $100m cost overrun". Brisbane Times. Retrieved 11 September 2023.
  5. ^ Stone, Lucy (11 August 2021). "Inner Brisbane River moorings removed for Kangaroo Point green bridge construction". ABC News. Retrieved 27 November 2023.
  6. ^ "Kangaroo Point Green Bridge". coxarchitecture.com.au. Retrieved 1 June 2023.
  7. ^ Kim Stephens (6 November 2013). "Brisbane City Council to fund Kangaroo Point to CBD bridge". Brisbane Times. Fairfax Media. Retrieved 24 November 2014.
  8. ^ "Alice Street Bridge bikeway investigation works". Brisbane City Council. Retrieved 31 October 2016.
  9. ^ "Kangaroo Point bridge plans to progress with new QLD government funding". Archived from the original on 20 August 2018. Retrieved 15 November 2018.
  10. ^ "Kangaroo Point Green Bridge". Brisbane City Council. Retrieved 7 February 2021.
  11. ^ "Inner Brisbane River moorings removed for Kangaroo Point green bridge construction". ABC News. 10 August 2021. Retrieved 1 June 2023.
  12. ^ "Kangaroo Point Green Bridge". Brisbane City Council. Retrieved 4 November 2021.
  13. ^ "Kangaroo Point Bridge Height Safety Maintenance Access Systems". Safetylyne. Retrieved 4 November 2024.
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