Microtunneling
Tackling the underground mahi others won’t, since 2014.
Precision tunneling solutions for complex civil projects across New Zealand.
1000+ km
Tunneling drilled
Up to 2.5m
Pipe capacity
NZ
Nationwide projects
300+
Projects delivered safely
Specialist trenchless drilling
Delivering complex underground infrastructure with precision.
United Tunneling specialises in microtunneling and underground pipeline installation for projects where traditional excavation isn’t practical. Working with pipe diameters from 150mm through to 3.0 metres, the team is often brought in when projects become too deep, too complex, or require a more precise approach.
From busy urban environments to challenging ground conditions, United Tunneling delivers solutions that minimise surface disruption while maintaining accuracy and efficiency. With extensive experience across infrastructure, drainage, and utility installations, the team supports contractors, engineers, councils, and developers on projects that require specialised tunnelling expertise.
Our tunneling capabilities
How we deliver the work others call upon us to do.
When projects become too deep, too complex, or too disruptive for traditional excavation, our trenchless methods provide the solution. These are the techniques we rely on to deliver underground infrastructure safely and precisely.
Microtunneling
Precision-guided microtunneling allows us to install small- to medium-diameter pipelines with minimal surface disruption. Perfect for urban areas, busy streets, or sensitive environments where traditional excavation isn’t practical. Our team ensures accuracy, efficiency, and safety on every project.
Pipe Jacking
Pipe jacking involves hydraulically pushing pipes through the ground for medium-length runs, maintaining precise alignment while reducing excavation. It’s ideal for projects where surface access is limited or disruption must be minimised. We handle everything from setup to completion with industry-leading expertise.
Auger Boring
Auger boring uses a rotating cutting head to install larger diameter or longer pipelines underground. This method is perfect for projects requiring deeper or extended runs beneath roads, rail, or other infrastructure. Our skilled team ensures reliable, accurate results while keeping surface impact to a minimum.
Pipe Ramming
Pipe ramming is a fast, cost-effective method for installing steel or concrete pipes under roads, embankments, or restricted areas. Ideal for short crossings, this method delivers precision and efficiency for projects others may avoid. We specialise in delivering solutions in challenging ground conditions.
A different perspective on complex tunneling.
Every project has its own challenges — from tricky ground conditions to working deep underground in busy urban areas. We bring a different perspective to each job, finding the smartest, safest way to get it done.
Our team combines experience, practical solutions, and the right trenchless methods to deliver projects efficiently and reliably.
Plan
We begin by assessing the project requirements, ground conditions, and site constraints to determine the most effective trenchless approach.
Drill
Using specialised equipment and experienced operators, we carry out precision tunneling and pipe installation with minimal disruption to the surface.
Deliver
Working closely with contractors, engineers, and project managers, we ensure every stage of the job runs smoothly and meets the required standards.
Reinstate
Once installation is complete, we ensure the site is left safe, clean, and ready for the next stage of the project.
We’ve worked with the team at United Tunneling on several challenging installs. Their experience and equipment make a real difference when the ground conditions get difficult. They’re the crew you call when the job needs to be done right.
— Infrastructure Contractor
United Tunneling came in when a section of our project became too complex for traditional excavation. Their team delivered a precise trenchless solution with minimal disruption and kept the job moving on schedule. Professional and reliable from start to finish.
— Civil Project Manager
Tough jobs, done well.
Looking after our people in the same waka.
Health and safety is at the heart of everything we do. Our crew are highly trained, experienced, and committed to maintaining safe worksites on every project.
We follow strict industry standards and procedures to protect our team, our clients, and the public.
At the end of the day, our goal is simple — to make sure our whole whānau comes home safe to their families.
Got a tricky underground job coming up?
We’re here to answer your questions and get things drilling.
