If you are driving between the Hibiscus Coast and Warkworth next week, expect night closures and detours on SH1.

From Monday, December 15 to Thursday, December 18, crews will be working between the Silverdale and Warkworth interchanges.

On Monday, December 15, between 9pm and 5am, northbound lanes from Silverdale to Warkworth will be closed.

The Silverdale, Millwater, Orewa and Puhoi northbound ramps and Johnstones Hill Tunnels will also shut, with detours via Hibiscus Coast Highway and Old SH1.

Work on the SH1 Orewa overbridge will be managed with traffic control at the Grand Drive roundabout.

On Tuesday, December 16, between 8pm and 5am, the southbound side from Warkworth to Silverdale will close, including Puhoi, Orewa, Millwater and Silverdale southbound ramps and the tunnels.

Traffic will again be sent along Old SH1 and Hibiscus Coast Highway.

On Wednesday, December 17 and Thursday, December 18, between 9pm and 5am, the Millwater southbound on-ramp will be closed and SH1 will have lane restrictions.

Drivers should use the Orewa or Silverdale southbound on-ramps instead.

Vehicles over 3.5 tonnes cannot use Grand Drive.

On Thursday, December 18, there will also be a full southbound closure from Orewa to Silverdale, with local detours through Grand Drive, West Hoe Road, Florence Ave, Centreway Road and Twin Coast Discovery Highway.

Heavy vehicles must leave SH1 at Pohuehue Road, Warkworth and follow Old SH1 to Twin Coast Discovery Highway.

All work depends on the weather. Nearby residents may notice increased noise during the night shifts.

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