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Improved Bridge Deterioration Models, Predictive Tools and Costs
The management of Australia and New Zealand’s bridge stock involves the development of forward works programs for periods up to, and longer than, ten years into the future. The scheduling of maintenance, rehabilitation and replacement, forms part of…
Review of Axle Spacing Mass Schedules and Future Framework for Assessment of Heavy Vehicle Access Applications
A key component to improving freight productivity in Australia is to improve access to the network for heavy vehicle operators. Assessment of bridge capacity is perceived to be critical to this aim.
Review of AS 5100.7 Rating of Existing Bridges and the Bridge Assessment Group Guidelines
There is significant pressure in Australia to improve freight productivity through the national reform agenda. A key component of the reform plan is to improve access to the road network for heavy vehicle operators. Assessment of bridge capacity is…
Review of Definition of Modified Granular Materials and Bound Materials

This report investigates the origins of the current Unconfined Compressive Strength (UCS) criteria that differentiates modified granular materials from bound materials. Based on the review, a number of changes to the UCS design criteria are…

Development of Marginal Costs for Heavy Vehicle Bridge Usage
This report develops approaches that estimate the marginal cost (MC) of bridge wear for heavy vehicle usage and estimates the availability and reliability of the data needed to use these approaches. Two approaches were examined. The first was an…
Design Rules for Bridge Bearings and Expansion Joints
In modern bridge structures, bridge bearings and expansion joints are commonly the source of most maintenance and performance issues. In some situations their performance can lead to the closure/failure of major structures and their maintenance can…
Investigating the Development of a Bridge Assessment Tool for Determining Access for High Productivity Freight Vehicles
This report deals with the first component of the bridge assessment tool and is a scoping study to determine whether there is sufficient data, and whether there exists suitable engineering models, to develop robust and nationally uniform technical…
Assessment of Rut-resistance of Granular Bases using the Repeated Load Triaxial Test
Over the last decade a considerable amount of research effort has been focussed on the development of a repeated load triaxial (RLT) test procedure to assist practitioners in the use of natural and marginal unbound base/subbase materials in road…
Guidelines for Bridge Management: Structure Information
This document is the combined output of two projects commissioned by Austroads to support improved consistency in Australia and New Zealand in inventory and condition data for road bridges, by developing a minimum set of inventory items, condition…
Concrete Durability: Development of Models to Predict and extend the Service Life of Concrete Bridges
Concrete durability is of great interest to State Road Authorities (SRA's), who are responsible for over 8,000 concrete bridges and in excess of 16,000 major culverts, with a replacement value exceeding $8.5 billion. Many of these concrete…