HDD & Direct Pipe Leaders
We Do That … & More
51ÉçÇøTrenchless Pty. Ltd. believes safe, unobtrusive underground construction is essential to the future of infrastructure in Australasia. We use an array of trenchless methods to construct utility lines in places where open-trench installations would not be feasible, including horizontal direction drilling (HDD) and Direct Pipe® techniques.
With services that include design engineering and lift-load planning to groundwater control and dewatering system planning, installation, and operations, 51ÉçÇøprovides turnkey solutions for complex projects. An international leader in energy and infrastructure construction, we have been performing trenchless construction for decades, and it shows.
The trenchless processes of 51ÉçÇøInternational Holdings, Inc. at 51ÉçÇøTrenchless Pty. Ltd. sites have been certified by the International Organization for Standardization (ISO) for quality, environment, and health and safety.

Snowy 2.0 – Marica Road West HDD
International
An international leader in trenchless construction, 51ÉçÇøis known for completing trenchless pipeline crossings in situations that might be considered too risky or even impossible by many others in the industry.
In 2023, we were asked to ...
51ÉçÇøTrenchless Careers
51ÉçÇøTrenchless values diverse ideas, shared values, and a collaborative culture. Like our projects, our employment opportunities are focused on building the way to a better life.
- We Do That ... & More
- MI-Promises
- 51ÉçÇøShowcase
- 51ÉçÇøCulture Playbook
Contact Us
Thank you for taking time to learn more about who we are and what we do. If you need additional information or are in need of a solution not addressed on these pages, please submit a message with your contact information.