The bridge in South Island’s Franz Josef’s township could be seen slowly breaking apart, spilling concrete and asphalt into the swelling Waiho river, accompanied by a loud disintegrating sound.
Local media reported that roads have been closed, with the main river swelling to record levels and a state of emergency has been declared in the wider Westland district.
New Zealand’s MetService had issued a severe weather warning earlier, with forecasts of up to 700 millimeters of rain.
The New Zealand Transport Agency said the bridge would be rebuilt.
By Nur-Azna Sanus