The longest Rocla M-Lock® bridge in Australia, a 456-metre flood plain crossing near Carnarvon in WA, underwent a baptism by flood in January and came out looking as good as new.
The Bibbawarra Road crossing replaced a gravel road across the dry bed of the Gascoyne River. The road was washed out every time the river flowed, closing the road for up to five months of the year.
The 456-metre long bridge is 8.4 metres wide, with 38 spans of 12 metres. It is supported on a total of 156 Rocla Duraspun® concrete piles, each 12 metres long and 585mm in diameter.