Sealed Pavement Rehabilitation - Kergunyah Road

About this project

Each year, we undertake a number of sealed road maintenance and improvement programs, including:

• Major Patching
• Sealed Pavement Rehabilitation
• Annual Resurfacing

Our Sealed Pavement Rehabilitation program targets roads that have numerous failures and significant roughness and require full-width reconstructions.

Roads identified for this level of works have generally reached a condition where our other sealed road renewal programs are not sufficient to bring the road back to an acceptable standard.

Why was this project undertaken?

The ‘pavement’ of a sealed road refers to the various layers of crushed rock, gravels and natural material which exist under the black sealed surface. This sandwich of compacted materials provides the structural base of the road that supports the traffic while the thin bitumen surface acts as the waterproofing layer to prevent the pavement from getting excessively wet and falling apart.

Over a road's life, traffic slowly breaks down the pavement materials until they can no longer support the traffic loads, which causes them to deform and ultimately fail.

What happened and when?

A large proportion of this years’ budget funded the rehabilitation of approximately 1.1km of Kergunyah Road, made up from five different segments of varying length along its 3km stretch. The scope involved a variety of rehabilitation treatments including, in-situ cement and lime stabilisation, recycling or replacement of existing gravel pavements, new gravel overlays, seal reinstatement and some associated drainage clearing works.

This road had been subject to numerous pavement failures and had been ‘patched’ over many years using a combination of asphalt and stabilising treatments. The sections of road in the scope of these works has continued to fail which prompted this larger scale rehabilitation treatment proposal rather than more patching.

These larger scale works were scheduled to occur in the warmer drier spring/summer months when weather conditions are more suitable for road construction activities.

The tender for these works was awarded by Council at its September 2024 meeting, with works commencing in October and completed in early November.

What is the impact of these works?

These works were a significant upgrade of the road and greatly improved driving conditions for the community.