The Washpool Flood Mitigation.

The Washpool Flood Mitigation

The NSW Government is providing $7.1 million to improve flood immunity on the Gwydir Highway at The Washpool, east of Moree.

Project information

The project will raise and rebuild a section of the Gwydir Highway at Washpool to ensure the road is better able to cope during and after flood events; a welcome improvement to local residents, tourists and freight operators who are often cut off after heavy rainfall. 

Works will include replacing an existing three cell box culvert with a 20 cell culvert structure which will reduce the duration of road closures by up to one day. The highway will also be raised and widened with the addition of 1.5m wide sealed shoulders as well as upgrading roadside drainage, improving safety for motorists and reducing ongoing maintenance costs.

Work commenced on 12 October 2020 and is expected to be complete by December 2021

A two-way sealed side-track has been constructed on the southern side of the highway to maintain traffic flow around the project site whilst construction works are underway. We will keep the community updated as the project progresses.

Main construction works on the Gwydir Highway at the Washpool are expected to commence in January 2021, and will include:

  • Replacing the existing culverts with a larger structure and raising the existing road level on both sides
  • Providing a wider and more durable road formation above the new culverts;
  • Improving drainage at the site by reshaping the table drains;
  • Providing standard scour protection measures upstream and downstream of the new culvert structure; and

Maintaining the existing clear zone and carrying out localised vegetation control including trimming or weed removal (if required).

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