Microtunnelling expert Rob Carr has won the design and construction contract for the next stage of Greater Western Water’s CBD wastewater expansion project, which will focus on Elizabeth Street in central Melbourne. The new contract follows the successful delivery of the previous work package for the project by the contractor on adjacent Lonsdale Street.
The Elizabeth Street Sewer Upgrade is the third stage in Greater Western Water’s four-tier, $ 80 million program to expand the Melbourne CBD’s sewer network capacity. A new pipeline is being built to connect to the new sewers under Lonsdale and Spencer Streets which were completed in previous projects in November 2020 and December 2018, respectively.
The 723 m long pipeline is made of glass fiber reinforced pipes (GRP) OD 820, which are microtunnelled between 6 m and 9 m below Elizabeth Street. In addition, eight GRP shafts will be built along the route.
The street is one of the busiest in the city and connects the historic Flinders Street Station with the Queen Victoria Markets and accommodates three busy tram lines. As a result, the project requires complex traffic management and planning to ensure the project remains operational continuously and disruption to the community is minimized.
Justin Croucamp, Rob Carr’s East Coast Operations Manager, says the team looks forward to working closely with design partner SMEC and Greater Western Water to provide this vital infrastructure for Melbourne.
Maree Lang, Managing Director of Greater Western Water, spoke last November about the completion of the Lonsdale Street phase of the CBD Sewer Augmentation Project and called the completion of the project a significant step towards ensuring service reliability for the future.
“As the existing sewer is over 120 years old, the new sewer pipe will help meet the growing demands of the Melbourne CBD now and in the future,” says Ms. Lang.
“We sincerely thank the thousands of townspeople, workers and commuters who adapted to the changing conditions during the construction work along Lonsdale Street. Your patience and understanding enabled us to provide this important infrastructure for Melbourne’s CBD. ”
Work on the Elizabeth Street phase of the project is expected to begin in early 2022 and be completed by early 2023.
Please visit the Rob Carr website for more information.
This article was featured in the December 2021 issue of Trenchless Australasia. To view the digital magazine, click here.