"There needs to be an inspection of infrastructure in the region fairly quickly," he told AAP on Monday.
"We haven't got a figure yet but it will be in the millions of dollars."
Sunshine Coast traffic was in chaos on Monday when the busy David Low Way between Coolum and the Peregian roundabout was closed.
A section of the road about four metres long and more than two metres deep collapsed because of erosion on Sunday night.
Mr Abbott says the council is considering whether a bypass can be hurriedly built to service traffic on that section.
"There is alternative access out along the Sunshine Coast motorway but it's quite congested already so there will be some extensive problems there.
"The project could be up to four weeks but they are trying to work on a bypass during construction."
Floodwaters have cut the Bruce Highway to most vehicles at Lethebrook, near Proserpine, in north Queensland. Only four wheel drives and trucks are permitted to cross.
Further south, motorists were stranded either side of Gympie on the weekend after torrential rain caused the Mary River to peak at 15.44 metres. Five businesses were also inundated.
The highway was open at Gympie on Monday, say police.
Even though the Mary River is slowly receding there is still some inconvenience with a number of road closures in and around Gympie.
Police say there were no further emergency calls on Sunday and residents were on Monday cleaning up after the weekend's flooding.
- AAP
