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NZTA advises toll road closing for tunnel safety check


The NZ Transport Agency is reminding drivers that the Northern Gateway Toll Road (State Highway 1) will be closed for 90 minutes tomorrow morning (Thursday, 17 February) because of necessary work connected with the maintenance of the Johnstones Hill tunnels.

The highway will be closed between 10am and 11.30am.  Northbound drivers will be diverted from the Silverdale interchange on the Northern Motorway (SH1) along the Hibiscus Coast Highway (SH17) through Orewa and Waiwera to Puhoi.  Southbound drivers will be diverted onto SH17 at Puhoi through Orewa to Silverdale.  Drivers also have the choice of using SH16 between west Auckland and Wellsford as an alternative route. 

The NZTA’s State Highways Manager for Auckland and Northland, Tommy Parker, says the closure has been planned for the time of day when traffic volumes on the toll road are low.

“People should allow an extra 10-15 minutes for their journeys because of the closure,” says Mr Parker. ‘The NZTA regrets any inconvenience to drivers, but the annual maintenance and safety check is necessary to ensure that all the equipment we have installed in the tunnels remains in perfect working order to deal with any emergency that may arise.”  

State Highway updates are available on, link).

For more information please contact:

Ewart Barnsley
Auckland Media Manager
NZ Transport Agency
T    +64 9 928 8720
M   +64 27 213 7616