MTBM completes major microtunnelling works under Melbourne

After 10 weeks of boring, the microtunnel boring machine (MTBM) excavating City West Water’s Spencer Street Sewer Upgrade has finished major microtunnelling works on the project.

The 9 m long, 1.5 m diameter MTBM has been installing more than 700 m of new sewer main under Melbourne’s CBD between Lonsdale Street to Flinders Lane.

The new sewer will connect with an existing pipeline to support the population growth in city over the next 35 years.

Quinn Civil is the Principal Contractor of the project, with microtunnelling operations subcontracted to Bothar Boring.

An in-depth article on the City West Water project was featured in the June edition of Trenchless Australasia. To view the digital edition of the magazine.

For more information visit the City West Water website.

If you have news that you would like included in Trenchless Australasia contact Assistant Editor Chloe Jenkins at

Image courtesy of Quinn Civil

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