A Tunneling Contractor You Can Rely On

Avoid the headaches, difficulties, and extended timelines with a total trenchless construction company that’s been executing best-in-class service for over 40 years. When you need reliable, innovative technology to safely complete your next project on time and within budget, Pacific Boring is the obvious choice. We’re your team of experts with all the resources to get every project done the right way.

Work begins at the entrance of a pipe jacking tunnel under Highway 1 near Big Sur, CA

Pipe Jacking

Tunnel construction using hydraulic jacks to directly install pipe by pushing the pipe through the ground behind a tunnel boring machine or shield.


Constructing ground support systems near the excavation point, inside the tunnel, and behind the shield or TBM to erect man-sized tunnels.

Auger Boring

Installing steel casing by means of a rotating cutting head. Spoil is removed back to the drive shaft by helical wound auger flights rotating in the steel casing.

Akkerman Earth Pressure Balance Machine (EPBM)

Akkerman Earth Pressure Balance Machine (EPBM)

Akkerman Tunnel Boring Machine System

Largest Fleet Of Boring Machines At Your Command

Pacific Boring owns a vast fleet of boring machines so your project can achieve success faster and overcome any unexpected difficulties which may arise when boring underground. Plus, we have more experienced and expert crews who pilot your project with both speed and safety.


Unexpected & Difficult Projects

When things go sideways, as they sometimes do, Pacific Boring is that trusted specialist with the ingenuity to think outside the box and the knowledge to act fast in overcoming any obstacle.


Get It Done Fast & Right

Unfortunately, the world does not stop and time is more valuable than ever. It’s crucial to have a contractor like Pacific Boring who can tend to every detail and keep everyone safe while meeting deadlines.


More Than The Status Quo

Finding a company with enough availability and real world experience behind them, can be frustrating. That is why Pacific Boring has more crews to assign who have gained 40 years of experience completing the most dynamic projects.

No Project Too Big Or Too Small

Because tunneling is such a specialized industry, finding a company that can scale to complete any sized project can be disappointing. You may be thinking your project is too big or too small… but we think it’s just right. 

Since we started in 1982, tunneling, pipe jacking, and auger boring have been our sole focus of work. Pacific Boring has successfully completed thousands of projects throughout the Western United States. From large 168″ diameter tunnels in poor soil conditions to precision 8″ auger bores.

Pacific Boring’s fleet of equipment and technical experience are unique and hard to find. Any scope of work you require we can do: accurate installation of reinforced concrete pipe, steel casing, fiberglass reinforced pipe, tunnel liner, and trenchless crossings in ground conditions ranging from wet unstable soils to soft rock formations.

You’ll find our reputation for innovation and hard work is well-earned. A reliable tunneling contractor who completes every project safely, on time and within budget.

Let’s Talk About Your Project

Together we have completed thousands of projects throughout the western United States. A few have been the most monumental endeavors in Pacific Boring’s legacy.

Take a closer look below.

Big Sur & Highway 1

In January 2021, due to fires and flash floods, a section of Highway 1 collapsed and slid down the steep cliffs into the ocean below in Big Sur…

Avenue 45

More than a mile of tunneling was needed along the old Pasadena freeway, north of Dodgers stadium to install a relief sewer…

Contractors Say It Best

“Over the years we have had the opportunity to work with many underground tunneling contractors on a multitude of challenging projects. With Pacific Boring we are always ensured that the pipe jacking/tunneling operations will be completed safely and on time. Their record of success is a tribute to their resourceful and highly trained crews and ongoing investment in the most modern tools equipment available.”

Lee Roesner

Vice President of Operations, Mladen Buntich Construction, Inc.

“Pacific Boring has always got the job done, no matter how difficult the job was. They take the extra steps to make sure the job is done correctly and safely.  It has been a pleasure to work with them over the last 15 years!”

Roger Williamson

Executive Vice President, Mountain Cascade, Inc.

“Pacific Boring performed their contractual obligations in a professional and expeditious manner and continually demonstrated a professionalism and working knowledge of the deep utility bores that far exceeded our expectations. Pacific Boring delivered the project ahead of schedule when the project schedule was accelerated and their project team and company represent the best in the industry.”

Jim Price

Senior Project Manager, Deep Utilities, ARB, Inc.

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