Four people have been injured after a two car crash in the Dome Valley (File photo).
Four people have been left injured, one critically, after a two car crash in the Dome Valley, north Auckland.
Emergency services were called to the scene of the crash near Waiwhiu Conical Peak Rd about 11.30am on Wednesday.
St John spokeswoman Beverley Tse said three helicopters had been dispatched to the crash site – one from Northland and two from Auckland.
She said St John was assessing one patient in a critical condition and was treating two people in a serious condition, and one in a moderate condition.
A spokesman for Fire and Emergency NZ said people were trapped in the vehicles.
There are significant roadworks underway on SH1 from Puhoi through to Wellsford, as part of the Ara Tūhono motorway construction and NZTA’s project to make the journey through the Dome Valley safer.
Much of the road is down to a single lane in each direction, with speed limited to 50 kilometres per hour.
State Highway 1 has been closed between Warkworth and Wellsford as a result of the crash.
Police have set up diversion on SH1 at Kaipara Flats Rd to the south, and Wayby Valley Rd to the north.
Motorists travelling between Wellsford and Auckland are advised to take the alternative route via SH16 to avoid these diversions.
Otherwise, motorists can expect delays with diversions expected to remain in place for some time.