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Kaipara District Council is working on opening slip-affected Mangawhai Road to two-way traffic before Christmas as a temporary measure, and its contractors will begin this week to clear trees and vegetation at the site.
They will then reinstate the road and complete metalling, sealing and the relocation of power poles, before removing the temporary traffic lights and opening the road to allow two-way traffic flow.
“We continue to work with geotechnical engineers on repairing the deep seated slip failure, which will require a significant engineering solution,” a council spokesperson says.
Earlier, council announced that more than half of 71 slips still affecting roads in the district, following severe weather events earlier this year, should be repaired by the middle of next year.
Almost 250 of the 300 slips caused by storms and cyclones since February have already been repaired.
Seventy-one of the most complex slips required detailed inspections by engineers, often hampered by ongoing instability caused by continued wet weather.
Repairs to 43 sites should be completed this financial year. That work will reinstate roads to the condition they were in before the bad weather, and each is estimated to cost $100,000 or less. The remaining 28 complex slip sites will cost more than $100,000 each to repair, and require formal procurement processes. Some could take up three years to complete.
A list of the slips and their current status is available at www.kaipara.govt.nz/road-repairs
