ABSTRACT
The Queensland Department of Transport and Main Roads (TMR) manages 286 timber bridges, some of which do not have bridge barriers or are substandard. Whilst the current Australian Standard indicates that bridge barriers are not required in certain road scenarios, the enhancement and elevation of safety measures remains a factor to consider. This project investigated the feasibility and prioritisation of installing bridge barriers on timber bridges. First, a literature review was conducted, followed by the identification of. barrier installation options as well as commercially available proprietary systems. A risk-based multi-criteria analysis was developed to identify suitable bridge barrier candidates on low-volume roads. This methodology was used to quantify crash risks and calculate a risk score for each location. The analysis identified 138 sites that are recommended to be investigated for safety barrier installation. This process can be extended to bridge networks across Australia.
