Under-boring works begin on Rossiters Hill for new water pipeline


Higher quality water for Ayr and Brandon residents is a step closer with the commencement of under-boring operations at Rossiters Hill.

Burdekin Shire Council Mayor Bill Lowis said Council’s contractor, Bothar Boring and Tunnelling, had established themselves on site and began under-bore operations on the new 4km Ayr-Brandon water supply pipeline late last week.

“Bothar is contracted to under bore the Bruce Highway and Queensland Rail main line,” he said.

“We are under boring the road and rail for a distance of 146m from Rossiters Hill towards Mirrigan Road in an effort to reduce the impact of the works on road and rail traffic.

“Bothar are using micro-tunnelling technology which uses a laser-guided cutting head accurate to plus or minus 10mm vertical and horizontal tolerance over the bore distance.

“This technology ensures the bore is constantly supported by hydraulically jacking 675mm diameter concrete jacking pipes immediately following the bore head.

“The bore will maintain a depth of 2.7m clearance below the Queensland Rail line ballast.

“Bothar also have been contracted to install the 450mm diameter water main, which is enveloped in concrete pipe, in this particular section of the new pipeline.

Cr Lowis said Council had already completed the installation of the 450mm water main from the South Ayr Treatment Plant to the Plantation Creek Crossing.

“There is another Council team was working on installing water mains pipe from Plantation Creek toward Rossiters Hill,” he said.

Cr Lowis said these works were due to be completed by March 5.

“Once construction is finished in early March, the line will be tested before being commissioned by March 31,” he said.

Cr Lowis said the $2.225 million project would end the problems caused by high levels of iron and manganese.


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