Horizontal Directional Drilling
Hydro Excavation
Plowing & Trenching
Traffic Control
Concrete & Asphalt
Montana's Turnkey Drilling Solution
At Four O Six, we provide quality commercial boring installation at competitive prices.
Four O Six Underground in Helena, Montana, is renowned for being a leader in today’s underground trenchless technologies. Trenchless technology allows our technicians to reach underground infrastructure without disrupting the flow of vehicular or foot traffic.
We provide boring and horizontal drilling services that utilize advanced trenchless technologies. In addition, trenchless drilling allows us to easily provide services to underground utilities, like water sewer, power, telecom, and fiber communications. Being on the cutting edge of drilling technologies, we specialize in telecommunications and directional drilling. We also provide services in small-scale asphalt and concrete work, traffic control, hydro excavating, and commercial landscaping clean up and restoration.
WHAT IS DIRECTIONAL DRILLING?
The best way to explain it is to show you. Here is a video that shows what we do.
In addition to Montana, we provide a variety of services to the areas of Wyoming, Colorado, Idaho, North Dakota, and New Mexico.
With over 15 years of experience, Four O Six Underground works hard to provide quality services in a timely manner. Our method is effective because we use innovative technology on every job. We take into consideration the specific needs every job requires. Not only is our goal to provide quality workmanship, but we also want to create lasting relationships with our customers.
Licensed and insured, we are ready to handle any job that comes our way. We are dedicated to safely and effectively completing every job. Customer satisfaction is always guaranteed because we go above your expectations each time. With Four O Six Underground, we provide free estimates for our customers upon completing an inspection of their proposed project. To obtain more information, call us today!

TESTIMONIALS
Four O Six Underground Inc., is my primary boring company when directional boring is required. They have addressed my needs time and again by completing the projects as requested. The word no is not on their vocabulary and they strive to accommodate the customer 100 percent. I really do appreciate all they have done on past projects and hope to keep working with them on future projects as well. Thanks for everything!
Four O Six Underground have set themselves aside from other boring contractors by being dedicated to their clients and projects, large or small. The crews not only provide accurate bores, but also take responsibility for their actions and clean up after themselves without being asked when leaving a jobsite. Four O Six is also proactive in locating utility crossings, and have helped homeowners locate sewer laterals, for example. The company’s management have been very easy to work with: responding immediately to issues and also providing simple and easy to understand invoices. Montana owned and operated, this company has a family touch to it and it shows in their desire to do a good job at a minimal cost.