2018-08-07 S&O Agenda - Att 1 to Item 1 - Draft Bridges Asset Management Plan

3. Future Demand
3.1    Demand Drivers
There is currently an ad hoc approach of demand management applied to the management of the
bridges through the monitoring of the asset conditions and traffic volumes. Load limits are a key
demand driver on the current and future levels of serviceability for bridges. Significant changes in
the monitoring of these activities should act as an indicator to reviewing demand management for a
specific bridge. It is Council practice that any change in the level of service due to demand is reported
to Council in accordance with current guidelines and practices. The major drivers of capital upgrade
for bridges will be:
     changes in legislative/statutory requirements,
     changes to load limits,
     Changes to traffic volumes,
     external funding opportunities,
     Improvements to trunk networks,
     risk management,
     climate change adaptation,
     Flood mitigation,
     changes in technologies or impacts on operational and maintenance activities.

The current bridge inspection program will act as a trigger for any need to improve on preventative
maintenance activities to preserve the life of the assets.


3.2    Demand Impacts on Assets
The most significant impact on assets from demand relate to periods of scheduled closures for asset
repairs/refurbishment or maintenance works. These scheduled activities should ideally be
undertaken outside of the peak traffic periods (Christmas to Easter) where vehicle movements on
our road network is most prevalent. Where practical, night works for scheduled maintenance may
be necessary to reduce the impacts on parts of the road transport network.


3.3    Climate Change Adaptation
Responding to changing natural hazard risks due to climate change will be another demand driver
that will affect bridge assets across the local government area. Consideration of impacts from
increases in the terrestrial areas subject to and intensity of natural hazards such as catchment
flooding, storm tide inundation, coastal erosion and shoreline recession, periodic tidal inundation,
and increased atmospheric temperatures must be taken into consideration for future upgrades for
those affected assets.

Those assets potentially affected by coastal hazards and catchment flooding can be identified within
the flooding and coastal hazard layers, which are viewable using Intramaps. These hazard layers
are located in the Emergency module and Development Assessment module, respectively.

Consultation with Council’s Program Coordinator, Climate Change Adaptation should be undertaken
for any assets within these zones. Council is currently pursuing more detailed and actionable
information regarding future climate conditions, including increased atmospheric temperatures, for
the local government area. Once obtained, this information should be considered as part of asset
design and maintenance.




Asset Management Plan: Road Bridges                                                               Page 7