A milk spill on SH73 near Parapet Rock, between Lake Pearson and Castle Hill, means that road users are being asked to stop on demand. Photo: Supplied / NZTA via RNZMotorists are being warned that a milk spill is affecting traffic on State Highway 73 in Canterbury. It comes after an oil spill closed Porters Pass for several hours this morning, after a vehicle towing a fuel tank became stuck on the one-lane Porter River Bridge. Fire and Emergency NZ sent crews from Springfield and Sheffield, who assisted with road control. Waka Kotahi NZ said the milk spill occurred near Parapet Rock, between Lake Pearson and Castle Hill.

Source: Otago Daily Times March 23, 2026 00:34 UTC