State Highway 1 north of Wellington is set to close around 9.30am to clear a truck which crashed this morning.

A 40-tonne B-train tuck and trailer rolled onto its side at the Paremata roundabout and is blocking the left hand northbound lane of SH1

Police said a crane has been organised and is expected on site at 9.30am to right the vehicle.

SH1 at Paremata is expected to be closed for two hours from 9.30am.

Motorists are advised to avoid the area if at all possible.

Meanwhile police are advising caution around SH1 between Taupo and Rotorua and the back road SH33, between Rotorua and Tauranga following a number of accidents this morning due to ice on the road.

- NZ Herald staff