Hundreds of roads linking small communities in parts of south-east Queensland have been damaged by landslips and flooding during severe weather events across the past two years.

But the vital infrastructure in isolated parts of the Gold Coast hinterland and the Scenic Rim is unlikely to be repaired before the third La Niña hits because constant rain has hindered busy work schedules.

Residents fear the impacts of another big wet on roads that are already struggling to cope.

Getting hold of materials and contractors to do the job has also posed another challenge -- with pipes for repairs coming from as far away as Western Australia.

"As you get a series of these events in quick succession, you see damage to road networks and infrastructure at a pace and [that] ongoing process becomes exhausting to try to respond to," Scenic Rim Regional Council Mayor Greg Christensen said. 

"You can't lay a road down where there is still water coming up from underneath, you can only do temporary works until the water table, the aquifer, recedes enough to allow you to have stable footings." 

Mr Christensen said temporary repairs were the only option in some areas until conditions allowed for a more thorough fix. 

"Our crews are diverted from our capital works project, our normal scheduled works, they're throwing themselves onto emergency repairs," he said.

Impact on community

In February, Illinbah residents made a flying fox to access food and medical supplies after the causeway at Flying Fox Road was washed away. 

A new bridge has since been installed, but many other roads are yet to be repaired. 

Major works are needed along Head Road at Carneys Creek and Price Creek Road, which remain closed, while Shelf Road remains open to light vehicles only.