Department of State Growth (DSG)
The Department of State Growth (DSG) seek to understand the load capacity of bridges on the Tasmanian highway network. Where the capacity of a bridge is not in accordance with contemporary vehicle loads, strengthening options will be proposed. Blythe River Bridge (westbound) is a 3 span continuous beam bridge spanning the Blythe River on the Bass Highway near Heybridge. Structural assessments have identified that the beams are significantly deficient in shear and longitudinal shear for all reference vehicle load cases assessed.
The designer requested Bellwether to undertake a constructability review of elements of the concept design for the tensioned stainless steel hangers and concrete web infill shear strengthening options, and strengthening of the halving joints.
The completion of a first principles cost estimate was required to assess all options within the proposed upgrade works, providing DSG with a greater understanding of all project components to allow an informed decision.
Bellwether investigated all components as supplied by DSG and carried out a first principles cost estimate.
Bellwether’s experience operating in highly sensitive environments and the team’s proactive approach to problem solving resulted in a good outcome for the client and the surrounding community.