Putty Road

One sandstone slope around 452 metres long at Colo (about 190 metres north of McDougall Drive) will require removal of six trees causing root jacking/slope instability, cleaning of drainage along the top, installation of steel mesh reinforcement and targeted application of shotcrete.

This work will prevent runoff from seeping into the slope, stopping further failure.

Some traffic changes will be required to allow the positioning of steel and concreting plant and equipment. No excavation will be needed.

We plan to perform this work between mid to late August 2023, weather and site conditions permitting.

Our working hours will be between 6.30am to 5.00pm, Monday to Saturday. No work will occur on public holidays.

A second slope around 310 metres long at Colo (about 518 metres west of McDougall Drive) will require the removal of eight trees causing root jacking/slope instability, three shrubs and other vegetation.

A large excavator will be used to remove or scale back boulders and loose material. The excavator will also break boulders into smaller pieces. This will be transported offsite to a licensed facility or approved stockpile.

Rock bolts will be installed to stabilise the slope.

We plan to perform this work between mid to late August, 2023, weather and site conditions permitting. Our working hours will be between 6.30am to 5.00pm, Monday to Saturday. No work will occur on public holidays.

We will be working to repair another slope on Putty Road about 200m south of the Colo River Bridge. This work will take place from early October 2023 to early January 2024, weather permitting.

This slope is about 30 metres long and work will involve tree and vegetation removal and removal of this material from the site. Additional drainage and soil stabilisation anchors will then be installed, followed by restoration work. To improve road safety, we will also carry out relining of the existing culverts.

During this work, traffic control will be in place for the safety of our workers and other motorists. Traffic stops will also occur to allow the safe positioning and storage of plant and equipment.

Over the next six months, Transport's road maintenance service provider for Western Sydney, Ventia, will deliver:

• 19 slope stabilisation repairs beginning with work at Slope south of Wheelbarrow Ridge Road, Colo Heights
• Road resurfacing patches to fixing reoccurring potholes
• Drainage, shoulder and other repairs along Putty Road in the Hawkesbury Local Government Area.

 We will deliver the repairs along Putty Road in project zones. Weather and worksite conditions pending, we will operate crews in up to three zones at the same time. Our traffic control will be staggered to avoid inconvenience to road users.

By grouping nearby projects into zones, we can work under one traffic control set up and complete activity specific work e.g. removal of rock and debris, which needs to be carried out by specialist contractors.

Grouping the repairs into project stages is more efficient and will help minimise our impact on the local community and road users.

See map below for more information about our work areas.

We plan to perform this work between mid to late August 2023, weather and site conditions permitting. Our working hours will be between 6.30am to 5.00pm, Monday to Saturday. No work will occur on public holidays. Two more Putty Road slopes needing remediation work at Colo Heights, are currently in the planning stages. We aim to start this construction in January 2024 and finish all slope repair work in the first quarter of next year.

Please allow plenty of extra travel time while we are working and expect delays.

• Work to repair flood damaged sections of Putty Road is progressing (PDF, 479.96 KB)
• Safer journeys for motorists along Putty road (PDF, 575.09 KB)