OUR PROJECTS

Providing the Complex Infrastructure Needed to Build Better Communities

Mariners Reach Riverwalk Remediation Aerial

Mariners Reach Riverwalk Remediation Crane

Mariners Reach Riverwalk Remediation

Abergeldie and Brisbane City Council continue their close, collaborative relationship working together to deliver complex, above water infrastructure. The 440m superstructure Mariners Reach Walk Riverwalk, constructed in 1907, needed remediation to repair its degraded structure. Abergeldie delivered partial demolition and reconstruction, structural remediation and repairs to the boardwalk and pathway at Newstead along the banks of Brisbane River ensuring continued safe use.

Client

Brisbane City Council

Year

2019

Region

QLD

Surveying Technology Used

-t

Supply Barge Used

Year Old Structure Rehabilitated

Scope of Works

Demolition of and off-site disposal of existing reinforced concrete (RC) desk structure, precast deck slabs and headstocks
Condition assessment of and repairs to remaining concrete structural elements, including RC piles, RC abutments and headstocks not demolished
Condition assessment of and repairs to existing timber structural elements
Repairs and/or removal/re-erection of existing timber section of the Riverwalk at southern (upstream) extent, including bearers, joists and deck plants
Replacement of corroded steel bolts and fasteners with equivalent stainless-steel fasteners
Construction of a rock gabion cut-off wall along the landward side of the Riverwalk and associated stabilisation works to the river revetment
Supply and installation of fibre reinforced plastic modular desk structure
Removal, storage and re-erection of balustrades, light poles, drinking fountains, electrical and water services, seating, commemorative plaques and flagpoles
Landscaping

Complexity

Mobilisation to site was delayed by Council to reconsider construction methodology, noise controls and temporary traffic management arrangements to address concerns of potential for disturbance of amenity to residents in the immediate vicinity of the works.

Immediately upon granting of site possession, Abergeldie carried out a detailed survey of the site as a 3D scan. This process picked up the precise positions of the existing piles to inform specification and dimensions for procurement of the FRP materials for the headstocks, joists and decking. The 3D survey also captured the positions of the existing handrail and stanchions, which were superimposed onto the new design to document the precise positions of joists under each stanchion. This enabled the headstocks to be marked-up accurately when they were set out on site.

Community Benefits

The existing Riverwalk, constructed in 1997, comprises of a timber deck with concrete paving on the ground, and piles of timber and concrete with concrete headstocks. Ongoing use reduced its structural capacity, making it unsafe for public use.

Used daily by pedestrians and cyclists, the Mariners Reach Riverwalk stretches 440m along Brisbane River adjacent to a luxurious and popular residential area. Enhancing its life, strengthening the structure, and remediating its regenerative structure was to the benefit of the local community and daily pedestrians, cyclists and tourists.