TRAFFIC on the Bruce Highway through Gympie ground to a stop this afternoon when the highway again went underwater near Kybong.
The Inglewood Hill bridge had already cut off the main highway route with traffic redirected through via Pengellys Bridge, but that came with a number of problems for travellers.
As many people cut their holidays short, vehicles towing caravans, trailers and boats were mingled with heavy transport vehicles.
At leat two loaded semi-trailers coming to a halt on the detour route caused even more traffic gridlock until the road was cleared.
Intersections in the town were locked and it was taking up to an hour to pass through the city as the road network became grid-locked.
Gympie Regional Council work crews have been working around the clock to keep roads open where possible, carrying out repairs on washouts and attempting to patch badly pot-holed roads.
Crews have also been working across the region putting up road closed signs as soon as possible as the flood waters have shut off roadways.
People are again reminded not to enter flooded roadways or attempt to drive across any flood roads as the force of the water flow has caused major washouts in some areas.
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