At the Southern Connection extended overnight closures are planned at Johnstones Hill Tunnels both directions during February and March 2023 to complete the final road surfacing, chip sealing, barrier installation, line marking and signage.

Northbound SH1 closures between Silverdale to Johnstones Hill Tunnels (JHT). Detours will be in place via Hibiscus Coast Highway, from 9pm to 5am.

• Sunday 12 to Thursday 16 February

• Sunday 19 to Thursday 23 February

• Sunday 26 February to Thursday 2 March

• Sunday 5 to Thursday 9 March

While the northbound closure is in place, traffic will detour along Hibiscus Coast Highway (HCH). A stop/go operation will be in place on HCH to manage traffic safely.

Over Dimension vehicles will be assisted through the site via our traffic management team. Heavy vehicles are advised to take State Highway 16.

Southbound SH1 closure between Pūhoi to the JHT. Detours will be in place via Hibiscus Coast Highway, from 9pm to 5am.

• Wednesday 15 February and Thursday 16 February

• Sunday 19 to Thursday 23 February

• Sunday 26 February to Thursday 2 March

• Sunday 5 to Thursday 9 March

• Sunday 12 to Thursday 16 March

Additional to these night-time road closures, there may be new road layout changes needed in the south to complete the final tie-in works around the JHT. We will update you once we have more information.

These works are being coordinated alongside closures at Dome Valley for maintenance as both teams are again working together to get as much work done with the least possible disruption.

As the Dome Valley works will close SH1 from Hudson Road, Warkworth through to Wellsford (Wed 8 Feb to Thu 23 Feb) our Northern Connection team will be working a few nights within their two-week closure to complete paving and other finishing works.