The surface on a road is like paint on your house – it keeps water out of the structure underneath. Like paint, the seal breaks down over time and starts to let water in.
The ideal time to reseal is just before any deterioration occurs, so your road may still look to be in good condition before we complete a resurface.
Before we resurface a road, we undertake prior works to ensure the road is in reasonable condition. These pre-reseal repairs happen after winter and include repairs to the road structure and surface, drainage, and kerb and channel, and also raising service lids so that they’ll be level with the new surface. This is why it looks like we come to the site multiple times.
A letter drop will be undertaken 5-10 days before your road is resurfaced.
We routinely inspect the network to identify faults and condition ratings. Condition, age, usage and traffic volumes are then input into a model to prioritise work. The model only looks at these factors and does not prioritise any area in the district. NPDC has 1137km of sealed roads and we resurface about 63km (5.5 per cent) per annum.
We use a combination of asphalt and chip seal road surfaces across New Plymouth District, with asphalt costing more than five times the price of chip seal. Asphalt tends to be used on roads that have high volumes of traffic or high turning stress (for example, cul-de-sac heads and certain T junctions). NPDC chooses the road surface type based on traffic counts, road function and other factors.
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Page last updated: 01:29PM Sun 24 October 2021