HERITAGE has been lost after two railway bridges washed away in the flood.
Reids Creek Railway Bridge and the Burnett River Bridge at Mt Lawless have both received extensive damage, as a recent aerial survey revealed.
The steel and cast iron bridge at Reids Creek ended up in mangled pieces more than 100m from its pylons.
The 294m wooden bridge near Mt Lawless has large sections destroyed and a significant amount of debris built up.
The two bridges were among seven significant and heritage-listed bridges between Muan and Philpott Creek.
Gayndah resident and history buff John Mellor said two concrete pylons from Reids Creek Bridge were no longer there.
"Just the sheer force of (the water), there must have been an awful lot of logs," he said.
Building began on the bridge in 1911 and the structure had survived intact until the power of Reids Creek ripped steel spans clear from the pylons.
"They're just tossed around like matchsticks," Mr Mellor said.
Burnett River Bridge construction began in 1906 and it was the second-longest extant timber trestle rail bridge in Queensland.
Architectural historian Andrew Ward wrote that the bridge had "extensive flood bracing".
"That was a big, strong bridge and she survived many floods," Mr Mellor said.
"I used to walk over there; I don't think I'll ever walk over there again."