Sealing SH1 north & south of the Waimakariri Bridge
We are ready to stabilise and re-seal SH1 north and south of the Waimakariri Bridge. From Sunday night 18 October and continuing until late November, north and southbound traffic on SH1 will be reduced to one lane each night.
Work starts on the north and southbound right-hand lanes and will then move to the middle lanes and finally the left-hand lanes.
A 60km/h speed limit will be in place on this part of SH1 during the night work and while there is loose chip on the road. This work should not create any significant delays overnight. Northbound lane reduction times are 7pm to 7am. Southbound lane reduction times are 6pm to 5.30am
What are we doing? We start with foam bitumen stabilisation, which creates a strong but flexible base layer. (This is done using a train made up of a bitumen tanker, a milling machine and a water cart.) We will then chip seal the road. In between the foaming and chip sealing, the surface needs to harden for several days.
The final stage of sealing the road is laying the asphalt surface. In some areas this will need to wait until the chip seal has been down for about a year.