The main road linking Western Australia to the Northern Territory has reopened several days after the route was cut due to flooding.

It has been almost a week since floodwaters surged above a crucial bridge on Victoria Highway in the territory, completely isolating East Kimberley from the rest of the country.

The region was already isolated to the west after record flooding in January severed the Great Northern Highway at Fitzroy Crossing.

Supermarket shelves have been empty for days and military assistance has seen non-perishable and fresh goods ferried and flown into the region.

However, authorities in the territory have today given the green light for road traffic to resume along Victoria Highway.