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Why Diona
Vision & Values
HSEQ
Community
A Calibre Group Company
Industry Associations and Accreditations
Markets
Gas
Power
Water & Sewer
Transport - Rail and Roads
Services
Design and Construct
Construction
Plant & Labour Hire
Testing & Commissioning
Trenchless Construction
Projects
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News & Announcements
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Opportunities
Life at Diona
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Why Diona
Vision & Values
HSEQ
Community
A Calibre Group Company
Industry Associations and Accreditations
Markets
Gas
Power
Water & Sewer
Transport - Rail and Roads
Services
Design and Construct
Building better communities
Construction
Plant & Labour Hire
Whatever the asset - Diona delivers!
Testing & Commissioning
Delivering results for over 35 years
Trenchless Construction
Projects
Murrarie Looping Project
Peakhurst Substation
St Marys Wastewater Central Precinct
Pennant Hills Road & Marsden Road Intersection Upgrade
Great Western Highway Safety Upgrade: Blackheath
Beecroft and Carlingford Roads Intersection Upgrade
Bilpin Overtaking Lane
Marsden Park Pressure Sewer
Parramatta Light Rail (Enabling Works)
Hay Street Substation
Sydney Light Rail
Hayes Hill Branch Gravity Sewer
Rochedale Water Infrastructure Upgrade
Refresh Woolloomooloo
Strategic Infrastructure Delivery Partner Agreement - Unitywater
Ausgrid Substation Oil Containment Infrastructure Upgrade
Chetwynd Street Lift Pump Station Civil & Mechanical Works
Logan Reserve 110kV
Sydney Park to Haymarket 330kV Cable Circuits
Brunswick Area Sewer Augmentation
Singleton Sewage Treatment Plant – Ultraviolet Disinfection System
North West Growth Centre Wastewater Transmission
Albert Street Gas Insertion
Colongra Lateral Pipeline
Lilydale Gas Pipeline
Marburg Range Repair Project
Chambers Flat Pump Station
Greenhill Road Gas Pipeline
North Sydney Desalination Pipeline
Tarro to Shortland - Trunk Watermain
Kilcoy Water Main Augmentation
Mudgeeraba Water Treatment Plant – Pipework Reconfiguration
Northern Beaches B-Line Program – Water & Sewer
Bromelton Trunk Water Main
Elara Estate: Western & Northern Gravity Sewer Lead-Ins & Sewer System Works
Roma to Brisbane Pipeline (RBP) Dig Ups – Stage 2
South West Priority Land Release Area (SWPLRA) – Water Infrastructure
Eastern Creek Gravity Sewer Extension
Canterbury Town Centre – Water & Sewer Infrastructure
Singleton Town Centre Upgrade
Gresford Road Bridge Over Glendon Brook
Picnic Point to Haymarket – 330kV cables
Adelaide Central Reinforcement Project
Bald Hills to Carseldine 275kV Cable Upgrade
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