The NZ Transport Agency wishes to advise motorists the maintenance work currently underway on the twin tunnels at Johnstone's Hill has been extend to take advantage of good working conditions and low traffic volumes.
The Southbound tunnel will be closed tomorrow, Thursday 12 August, from 6am and 6pm, and two-way traffic will be diverted through the northbound one.
Speed restrictions will be in place and drivers should be aware of lane changes diverting them into the opposite tunnel. People not wanting to drive on the toll road can use the SH17 alternative route between Silverdale, Orewa and Puhoi.
This maintenance work is necessary to help ensure the safety of people using the toll road.