And given the battering the NSW North Coast has taken over the past few days, it's no surprise it's now closed.

George Botfield captured this amazing video from the cabin of his truck earlier today.

Waterfall Way, on Dorrigo Mountain, is closed in both directions between Little North Arm Road and Maynards Plains Rd due to flooding.

The Gwydir and Oxley highways can be used as alternative routes to travel between the Pacific and New England highways, authorities advise. Motorists can expect an extra two hours travel time.

The situation is even more dire further north as residents around the northern NSW town of Murwillumbah have been ordered to evacuate.

The State Emergency Service has ordered anyone from Condong to Tumbulgum and surrounding areas to leave via the Tweed Valley Way.