Update: Slip and tree fall blocking State Highway 20 – Auckland Southwestern motorway - OPEN

Final update 3:00pm 

All lanes have now been cleared and are OPEN between Queenstown Road off-ramp and Queenstown Road bridge on State Highway 20. 

The right lane of the Queenstown Road off-ramp will remain closed until further notice. 

NZTA thanks motorists for their patience as traffic returns to normal. 

Update 2:15pm

One lane is now OPEN between the Queenstown Road off-ramp and the Queenstown Road bridge on State Highway 20 following a slip and tree fall which closed three northbound lanes on the motorway this morning. 

Crews remain working as quickly as possible to open the remaining two lanes. An update will be provided once the road is fully reopened. 

NZTA thanks motorists for their patience as we work to clear the slip and safely re-open the road. 

Updates on the highway’s status can be found on the NZTA/Waka Kotahi website: 

• Highway Conditions - Auckland(external link)

9.48am

Auckland drivers can expect detours and delays as road crews clear a slip and tree fall affecting State Highway 20 this morning. 

The slip and treefall near the Queenstown offramp mean State Highway 20 is closed between Neilson St offramp and Hillsborough Rd on-ramp. The incident was reported shortly before 1:30 this morning.

Contractors are on-site and working hard to reopen the highway as quickly as possible.

Tree fall and slip, SH20, southwestern motorway.

Drivers must use available detours and can expect delays when travelling through the area. 

Detour route

• Neilson St Off-ramp, left onto Onehunga Harbour Rd, straight through onto Onehunga Mall Rd, left at Princes St, right to Beachcroft Ave, right at Queenstown Rd, left at Herd Rd, left onto Hillsborough Rd and right onto SH20 Hillsborough on-ramp northbound. 

Updates on the highway’s status can be found on the NZTA/Waka Kotahi website:

• Highway Conditions - Auckland(external link)