Council has a total of 590 kilometres of sealed road throughout the district that it is responsible for managing including the ongoing maintenance and renewal and rehabilitation.
Council undertakes a detailed assessment of its road network every five years that looks in detail at the seal (surface bitumen) and the pavement (the underlying crushed rock base of the road).
The rating system determines the life remaining in both the seal and pavement by quantifying a number of visible features such as:
Depending on the rating score for the seal and pavement, Council annually assesses the ratings scores and determines the best treatment action for the roadway to extend its life.
For a seal at or near the end of its life there are a number of treatment options, however when a pavement is at the end of its life this will generally mean the road requires a full reconstruction.
For seals Council undertakes an annual resealing program that reseals roughly 25 to 30 roads and restores the seal of the road to 'brand new'.
Details on the different types of treatments for seals Council undertakes can be seen below:
The reconstruction of a road to replace a failed pavement is a much more costly and time consuming process and Council annually undertakes 3 to 4 full road reconstructions. The two different types of reconstructions consist of:
Granular Pavement reconstruction (local/rural roads)
Deep Life Full Asphalt reconstruction (major roads - similar construction to DTEI main roads)
Details can be seen below: