Flood Recovery

​Background of the event

A series of rainfall events across the State during February 2017 caused wide-spread flooding throughout the Great Southern Region.

The preliminary estimate of damages to State Government assets is $26.5 million, with over 60 per cent of WA’s oldest road network in the Great Southern Region sustaining damage.

Immediate temporary restoration works were undertaken on sections of the network that were closed or impassable and network connectivity was completed in March 2017.

General damage caused

The region’s east was impacted most and incurred the following major damage:

  • Phillips River Bridge and approaches on South Coast Highway were destroyed
  • East approach on the Jerdacuttup Bridge on South Coast Highway destroyed
  • Warperup Bridge Albany Lake Grace Road scouring of abutments
  • Bandalup Creek South Coast Highway road washed away
  • Gnowangerup Creek Bridge Broomehill Jerramungup Road scouring of abutments
  • Over 320 km combination of shoulder and drainage damage
  • 270+ blocked culverts
  • Estimated $1.5 million damage to culvert/drainage infrastructure
  • Estimated $1.5 million damage to road pavement infrastructure

 

Current situation and planned works

In establishing permanent restoration works on damaged sections of the network, the following works have been undertaken:

Phillips River Bridge on South Coast Highway - completed and opened to traffic on 11 February 2018

  • A brief ceremony was held on Wednesday 7 February to mark the completion of the new Phillips River Bridge. 

 Click to enlarge

Image: Phillips River Bridge completion ceremony

  • The new structure has been built to withstand a one in 100 year flood event, such as that which destroyed the previous timber bridge in February 2017.
  • The bridge has been constructed to current engineering standards and has a larger waterway area than the previous structure that was designed in the late 1960’s.

 Click to enlarge

Image: Phillips River Bridge waterway area

 

Click to enlarge 

Image: Phillips River Bridge completed and open

 

Jerdacuttup Bridge on South Coast Highway

  • Side-track open to traffic
  • Repair works are expected to be completed end of February 2018

 

Warperup Bridge on Chester Pass Road (Albany Lake Grace Road) - completed

 

Bandalup Creek on South Coast Highway

  • Embankment and pavement repaired, and temporarily sealed for opening
  • Pavement to be re-worked and sealed
  • Culvert outlet headwall/apron/wing-walls to be repaired


Gnowangerup Creek Bridge on Broomehill Jerramungup Road - completed

 

Contracts have been awarded to reinstate damaged pavement, shoulder and drainage infrastructure.  Works are expected to take one year to complete.

Modified: 13 Feb 2018