A temporary route to a central Queensland coastal town is now open, meaning about 2,000 residents are no longer stranded.
The only road to Agnes Water, south of Gladstone, has been closed due to flood damage, which was causing it to collapse.
Gladstone council staff worked through the night to build a temporary gravel detour.
Gladstone Mayor Gail Sellers says it was necessary to close the road.
"It's a two barrelled Bebo Arch, it's been down to one lane for the last few days and one of the footings on the arch was undermined and we've been trying to stabilise this footing by pumping concrete under it and we're still pumping concrete into it," she said.
"It was noticed that the road had dropped and that cracking was observed in the pavement so there was no other option but to close the road."
School students have been walking across the closed section to buses on the other side.
Councillor Sellers says the detour could become more permanent.
"They are isolated, the children are getting through, it's hoped it'll be open in the morning, if the sidetrack is going to be used for a length of time we will seal it," she said.
Motorists are being warned to expect delays.
© ABC 2013
17:37 EDT Much of western New South Wales has begun a heat wave, reaching at least five degrees above average for at least five days, averaging a maximum of 35 degrees or more.