Burchills are currently engaged by the City of Gold Coast to provide specialist engineering services to support a footbridge upgrade Planning and Options Assessment. Burchills have undertaken site investigations, hydraulic study, civil and structural assessment, options analysis, construction costing, with the final deliverable being a Planning Report for the replacement of Coplick pedestrian bridge.
The bridge traverses the Tallebudgera Creek as Scotty Logan Lane, Tallebudgera Valley, and in 2017 the City determined that the structure had reached the end of its serviceable life and replacement was required.
Burchills undertook a detailed hydraulic impact assessment of 6 possible design options for the bridge, including possible refurbishment of the existing structure. 1D/2D coupled hydraulic modelling (TUFLOW) was used to test the impacts of the various design options, with 1D HEC-RAS modelling also undertaken to verify the study and gain an initial understanding of the hydraulic behavior of the bridges.
The hydraulic study was then packaged within a planning investigation that included a whole of life cycle costing analysis as well as a cost benefit investigation. The study was used by the City to inform their bridge replacement program, and is envisaged to form part of a Design and Construct tender package in 2019. Our scope also covered bridge engineering services to support a footbridge upgrade option assessment. Burchills undertook investigations, structural design concepts, options analysis, design costings, and a structural planning report for the replacement of Coplick pedestrian bridge.