From major sewer and water projects across Victoria and New South Wales to bespoke machine development and refined trenchless capabilities, the company consistently displayed the kind of versatility that clients value and competitors respect.
One of the year’s signature achievements was the delivery of more than 1200m of trenchless installation for both Kemps Creek dual pressure mains and Bonds Creek carrier extension projects in Sydney.
This work was done in collaboration with its valued and trusted partner, Quickway.
This project saw Bothar use a comprehensive range of trenchless construction techniques and equipment, including auger boring, a laser-guided vacuum system, ‘Bothar Built’ EPB-TBMs and an AVN600 microtunnelling machine.
This diverse methodology, together with their vast portfolio of ‘on-hand’ equipment allowed Bothar to effectively navigate varying and challenging ground conditions across the project. Further south, Bothar commenced works to relocate a sewer at Doncaster Road as part of the Eastern Freeway upgrade: Burke to Tram Road.
This project in Victoria includes major road and bridge upgrades and an interchange connecting the Eastern Freeway to the North East Link tunnels.
Bothar’s scope of (early works) on the Doncaster package included the construction of specialist secant piled shafts, relocation of approximately 860m of new sewer mains, installation of sewer maintenance holes and decommissioning of redundant sewer assets.
The company also strengthened its arsenal with the acquisition of a Herrenknecht AVN400 microtunnelling machine.
The AVN400 is a versatile, slurry-supported microtunnelling machine designed for safe tunnelling in diameters starting from 400mm. It has full-face excavation capabilities, combined with remote-controlled operation, which make it suitable for a wide range of ground conditions, including silt, clay and incohesive soils.
This coupled with Bothar’s internal transfer of varying trenchless equipment from its Canadian operation marks a significant boost to the company’s delivery capacity across key sectors, from water and sewer to utilities and energy infrastructure.
As 2026 unfolds, Bothar’s leadership approaches the year with a blend of ambition and strategic focus.
Internally, investments in talent and technology have positioned the company to respond rapidly to evolving infrastructure demands.
Externally, Bothar continues to deliver strong, reliable results that asset owners have come to depend on.
The coming year will be defined by consolidation and extension – building on 2025’s successes with deeper client alliances, a broader project footprint and continued enhancement of its toolkit.
For more information, visit botharboring.com