Brady Marine & Civil (Brady) recently completed the construction of an elegant pedestrian bridge in Brisbane, Australia
Site constraints necessitated an innovative delivery solution, which Brady developed in consultation with their repeat client Brisbane City Council (BCC), BCC designer SMEC and Brady joint venture partner Georgiou Group.
The scope of works included:
-
- An 80m span, highly skewed, tied steel arch structure with vertical hangers and an insitu concrete deck. Total weight approx. 300 tonnes
- 175m of elevated approach structure consisting of a 7m wide insitu concrete deck on large diameter marine bored piles
- Minor earthworks, retaining walls and demolition of existing paths in the Newstead House gardens
- Reconfiguration of traffic lanes over approx. 1km of existing roads to provide separate bike lanes.
- Landscaping works consistent with a well-established, heritage garden
Special Features
A number of constraints to construction activities had to be overcome including restrictions on lane closures and night works, maintaining pedestrian access through the site, minimising impacts on the adjacent Newstead Park including heritage protected trees and vegetation, and maintaining marine access in Breakfast Creek.
The last of these posed the most significant challenge, with original plans for bridge construction proposing a 3 month shut-down of the waterway to enable in situ “stick-building” of the main arch.
In response to this challenge, Brady proposed an innovative solution to complete the main span fabrication off-site, transport the arch to site by barge supported on SPMT modules, then rotate and lower the bridge into place on a suitable high tide. This solution required only a 1 week closure of the river as well as overall time savings, better quality control and enhanced safety.
More information on the project can be found at https://www.brisbane.qld.gov.au/traffic-and-transport/roads-infrastructure-and-bikeways/bridges-for-brisbane/breakfast-creek-yowoggera-bridge
Our latest projects
