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Peninsula Link: Frankston Stony Point Railway Bridge
The Frankston Stony Point Rail Bridge crosses over the Peninsula Link Freeway, located on Victoria’s Mornington Peninsula. In this location the Frankston Stony Point rail line comprises a single bi-directional broad gauge track carrying regional…
Managing Risks of Excavation Adjacent to Bridges for New Construction
The RTA Bridge Engineering Branch and Asset management Section routinely assess proposals by external developers that involve deep excavations for new infrastructure construction located adjacent to its bridge structures. These excavations have the…
High Level Bridge - Extending the Useful Life of Heritage Bridges
Described as being 'one of the finest pieces of architectural iron-work in the world', the High Level Bridge in the UK recently underwent a major programme of investigation, assessment, strengthening and refurbishment. Constructed in 1849, the two-…
Seaford Rail Viaduct - Launching a Kilometre
The Seaford Rail Extension Project, currently under construction to the south of Adelaide, South Australia, requires a 1.125km long viaduct to cross the Onkaparinga Valley and River. The solution chosen is an incrementally launched, concrete box…
Capacity of Compression Members in RTA Timber Truss Bridges
Since the introduction of the limit state design method for Australian bridge design in the Austroads Bridge Design Code in 1992, there has not been an associated limit states timber bridge design code. The last applicable code was the working…
Robotic Grit-blasting - Engineering Challenges
Infrastructure shortage and aging are worldwide issues. Australia, in particular, faces unique challenges in maintaining infrastructures such as roadways and bridges. Corrosion is the primary cause of failure in steel bridges, and is minimised by…
Kawarau Steel Arch Bridge Repair
The Kawarau River Bridge in New Zealand has presented some challenges to address design shortcomings identified after more than 40 years of service.
Testing and Specifying Chloride Resistance of Concrete
A wide range of test methods has been used to measure the resistance of concrete to chloride penetration. Each method is purported to measure the property of concrete central to the chloride transport mechanism into concrete. They include water…
Observations on the Design and Refurbishment of Modular Expansion Joints
Modular bridge expansion joints (MBEJs) are utilised when the movement range at a bridge expansion gap exceeds around 300 mm, with the largest MBEJ installed to date accommodating a movement range in excess of 2100 mm. Traditionally MBEJs have been…
RTA Bridge Inspection Records For Sustainability
All the existing bridges require a maintenance regime to enable the structure to sustain the current traffic loads. The defects in the structure can be identified through regular inspections. There should be a defined inspection procedure not to…