Sealing and Widening of Roads
Road seal widening
We carry out around three kilometres of 'widening' on sealed roads each year.
Widening provides what's officially called a 'recovery margin' for vehicles so if they veer out of control there is enough space for the safety of pedestrians and cyclists. Widening may also be done to provide for parking. For information on how we set the width of roads in the district please check out our Development Code.
New work on roads is usually done to meet required widths, however there is a backlog of roads that do not meet the requirements, We've got these roads ranked in order of priority and our aim is to upgrade these as funding becomes available.
Road seal extensions
There are 1,061km of local roads in the Western Bay District. Of the total, 172km remain unsealed with 53 lengths totalling 85km having more than 50 vehicle movements per day.
Roads with less than 50 vehicle movements per day do not qualify for Council funded seal extension works under the Seal Extension policy.
The sealing of unsealed roads in the District is determined in order of priority by an assessment of each road under the following criteria:
- The volume of traffic the road carries - 40%
- The dust exposure to residents living on the road - 25%
- The degree of benefit gained relative to the cost of sealing the road - 20%
- The impact on earnings any dust may have (such as dust on crops like kiwifruit) - 15%
On Thursday, 7 July 2016, Council's Operations Committee adopted the revised criteria above. Under the new criteria 23 unsealed roads have been prioritised for seal extensions over the next four to five years, from 2016-2021, totalling 30km.
The indicative cost to undertake seal extension works on low volume roads is around $260,000-$300,000 per km. The costs are influenced by land purchase requirements, land use and expected vehicle loadings, the existing alignments and topography, service relocations, consent conditions, drainage requirements, entranceway numbers and intersections.