Galston Gorge Closure Transport for NSW

Unprecedented ongoing rainfall this year has led to eight slippage sites along Galston Road between Hornsby Heights and Galston.

In May 2022, we advised that Galston Road will be reclosing to complete further remediation works at slippage site 3.

These works are now scheduled to be carried out from Monday 8 August, taking up to two months to complete, weather permitting.

Works to be completed
We will be carrying out remediation of slippage site 3, this will involve stabilisation of the existing dry-stone retaining wall.

The stabilisation work will strengthen the retaining wall and is a preventative measure to reduce the chances of road closures in the future.

Maintenance coordination
ConnectSydney will be utilising the closure of Galston Gorge to carry out additional routine maintenance to reduce the impact on the community.

Works completed to date
We have remediated seven slippage sites. This has included the removal of approximately 1,600 tonnes of rock from the slopes including some large boulders, the installation of rock bolts and application of shotcrete to stabilise rock faces, the scaling of slope surfaces and completion of drainage improvements.

How will our affect you?
Large machinery is required, and workers will be placed in a high-risk zone, so a partial opening of the road during this phase of the work is not possible for safety reasons.

Traffic changes
There will be a full road closure of Galston Road between Hornsby Heights and Galston from 8 August 2022 for a period of up to two months to ensure the work zone is safe for our workers.

Our work will be weather dependent, and detours will be in place throughout the closure. Visual messaging signage will show detours and any changed conditions.

Please allow extra time for travel and follow the direction of signage and keep to speed limits.

For the latest traffic updates, call 132 701, visit or download the Live Traffic NSW App.

Higher School Certificate
We are committed to reducing our work impacts during the HSC. If for any reason we have not completed works in time for the exams, we will temporarily cease work and revert to a partial reopening of the road similar to the arrangements during the month of June.