Improvements on Galston Road, Hornsby Heights to Galston

Roads and Maritime Services is improving Galston Road to improve safety and maintain efficiency on the state road network.

Galston Gorge, Hornsby Heights, Galston
Galston Gorge, Hornsby Heights, Galston

Register for updates

Please sign up to receive email updates so you get all our Galston Gorge news. We’ll contact you about road closures, any work in the area and changes to help stop over length vehicles blocking the road.

By signing up, I have read and agree to the Privacy Policy and Terms of Use of Roads and Maritime Services.


Galston Road passes through Galston Gorge which is notorious for its steep inclines and multiple hairpin bends. Because of this, heavy vehicles and buses that are 7.5 metres in length or more are prohibited from entering Galston Gorge and considered overlength.

Heavy vehicles and buses that are 7.5 metres in length are subject to enforcement action under the Road Transport (Driver Licensing) Regulation 2008 Rule 104 and 106(2).

Light vehicle combinations that include cars carrying trailers, boats or horse floats that exceed 7.5 metres are permitted to enter Galston Gorge. However, light vehicle combinations are reminded that vehicle combinations above 11 metres are unlikely to be able to navigating the tight bends in the Gorge based on recent surveys.

Safety improvements

An increasing number of incidents over the past few years have resulted in Roads and Maritime Services implementing several measures to improve safety on Galston Road and deter over length heavy vehicles and buses from entering the Gorge.

Multiple signs have been installed on both sides of the Gorge along with a vehicle detection system and vehicle activated variable message signs (VMS). These signs will be updated to advise motorists that light vehicle combinations over 7.5 metres are not affected.

These measures have helped to substantially lower the number of overlength heavy vehicles and buses using the corridor to avoid Pennant Hills Road.

Additional improvements are being implemented for both sides of Galston Gorge. This will build on previous work to improve the road for motorists and the community.

Heavy vehicle warning signage at Galston Gorge

Key upgrades

Galston Road upgrades include:

  • Improving and supplementing the existing infrastructure at both ends of Galston Gorge by installing a camera based detection system
  • Providing a safe U-turn bay on the eastern side of the Gorge, between Ryan Trail and Evans Road
  • Slope and drain improvements on Galston Road between Calderwood Road and Berowra Creek
  • Safety improvements at the bend of Galston Road, starting 150 metres west of Montview Parade.


The key benefits to the community include:

  • Minimise the number of overlength heavy vehicles and buses entering the Gorge and getting stuck
  • Improve safe turning options for overlength vehicles
  • Minimising closures of the Gorge while stuck overlength heavy vehicles and buses are cleared
  • Improved safety for all road users on the approach to Galston Gorge in Hornsby Heights.
Share this page: