Built on Strong Foundations.
Bachy Soletanche Australia provides high-quality, efficient, and cost-effective solutions to the building and engineering industries. We have roots in Australia tracing back 40 years, having established the diaphragm wall technique in Australia.
Forming lasting relationships, we've developed schemes and achieved cost efficiencies through quality geotechnical engineering, collaborative working, and ensuring that safety is at the forefront of all of our operations.
Discover our range of geotechnical technologies, enabling cost-effective, durable, and quality engineering solutions.
Our Solutions

Foundation Design
State of the art complex foundational design, including retaining walls and anchoring.

Retaining Wall
State of the art complex foundational design, including retaining walls and anchoring.

Pile Testing
State of the art complex foundational design, including retaining walls and anchoring.

Diaphragm Wall
State of the art complex foundational design, including retaining walls and anchoring.

Why Us?
Experienced
Bachy Soletanche Australia combines dedicated design and project engineers with experienced and well trained piling crews. Together, these teams have successfully completed contract works for some of Australia's largest infrastructure and building projects.
Success
We have successfully executed design, construct and pile testing projects. In recent years, we have worked on major infrastructure projects across Australia including the Epping to Chatswood Rail Link, Barangaroo, Kurnell Desalination Plant and Pacific Highway upgrades.
Safety
We are 100% committed to protecting the health and safety of everyone involved in, or affected by, our operations.
We strive to create a culture of world-class safety through visible leadership, clear expectations, streamlined systems and robust risk management.
Innovation
Innovation is in our DNA. Driven by an ambitious R&D policy and the skills of our dedicated engineers, innovation enables us to develop new processes, equipment and materials. The effort and investment we put into innovation have resulted in some of the major breakthroughs in our sector.


SABRE Stage II, Port Botany
Our BG40 has been back to work in CFA mode constructing 900mm CFA piles to RMS specifications. The piles are 15m deep with full depth reinforcement placed to align the “L” starter bars with the crane rail capping beam.
Moonee Bridge, Coffs Harbour
BSA has constructed the piled foundations for the bridge crossing Moonee Creek to 18m depth using temporary casings. Our crew were fortunate to mobilise to site just before the Covid-19 restrictions began to affect construction in the greater Sydney region.
Bombaderry Creek Bridge, Nowra
Our crews are successfully constructing bridge piles using permanent steel casings with column extensions up to 5m above ground. This technique is being adopted at the pier piles to eliminate the need for the column extensions to be constructed after the piles are built saving both time and cost for the project.
Botany Rd, Zetland
BSA are constructing a Secant Pile retaining wall using the Cased CFA method to ensure pile verticality and interlock. We have provided a design and construct solution to suit our client’s basement requirements.