Cam­paspe siphons get over­due upgrade

Campaspe News - - NEWS -

GOUL­BURN-MUR­RAY Wa­ter have be­gun up­grad­ing two key siphons in the Cam­paspe re­gion this win­ter.

The project will see im­por­tant im­prove­ments made to the Cam­paspe River Siphon and Bulls Siphon un­til Au­gust 6.

The work sites are lo­cated along one of GMW’s main car­rier chan­nels, the Waranga Western Channel and are about 5km apart.

Project man­ager Jar­rod O’Brien said work on the Cam­paspe River Siphon will see the ex­ist­ing siphon re­lined with fibre-re­in­forced con­crete to en­sure the his­toric as­set con­tin­ues to op­er­ate and pro­vide service to both Rochester and Lod­don Val­ley Ir­ri­ga­tion Districts.

“The siphon was built in the early 1900s and is near­ing the end of its ser­vice­able life, which is why it’s im­por­tant these works take place,” he said. “It features three bar­rels which al­low wa­ter from the Waranga Western Channel to pass un­der the Cam­paspe River with­out in­ter­fer­ence.

“On­go­ing patch works have taken place in pre­vi­ous years but this will be the first time since con­struc­tion that sig­nif­i­cant upgrade works have taken place.”

The re-lin­ing work will be car­ried out by con­trac­tor Downer Pipetech and will cost about $3.7 mil­lion — sig­nif­i­cantly less than if the whole struc­ture were re­placed, which would be in the vicin­ity of $12 mil­lion.

The newly lined siphon will pro­vide a sim­i­lar life­span to a full replacement op­tion.

Work on nearby Bulls Siphon will in­volve re­mov­ing the old struc­ture and re­plac­ing with a new four bar­rel three- me­tre diameter re­in­forced con­crete struc­ture.

“Bulls Siphon has ex­pe­ri­enced sig­nif­i­cant de­te­ri­o­ra­tion and has ex­pe­ri­enced con­sid­er­ably more fail­ures com­pared to Cam­paspe,” Mr O’Brien said.

“The resid­ual strength in the orig­i­nal struc­ture is much less which is why we adopted the replacement op­tion.

“GMW will carry out the de­sign and con­struc­tion work on Bulls Siphon, which is es­ti­mated to cost $2.7 mil­lion.

“By car­ry­ing out these works it will re­move the risk of fail­ure and en­sure we can con­tinue to pro­vide a re­li­able service to our cus­tomers.

“Zegelin Road be­tween Mur­doch and Tasker roads will be closed for the du­ra­tion of the works at Bulls Siphon.

“Driv­ers are asked to take care on lo­cal roads as there will be trucks and heavy ma­chin­ery mov­ing through the area.”

VIN­TAGE UPDATE — GMW man­ag­ing di­rec­tor Pat Len­non, left, with project man­ager Jar­rod O’Brien check­ing the Cam­paspe and Bulls Siphon projects.

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