Trenchless Installation Beneath Roads, Buildings, and Infrastructure

Horizontal Directional Drilling (HDD)

Horizontal Directional Drilling (HDD) is a cornerstone of TrenchFree’s trenchless construction services. HDD allows us to install new underground utilities with pinpoint accuracy while preserving roads, parking lots, landscaping, and structures above.

Precision Underground Installation

We routinely complete HDD projects in dense commercial corridors, municipal rights-of-way, and industrial facilities where traditional trenching would be disruptive, dangerous, or impossible.

Underground tunnel

How HDD Works

Pilot Hole

A steerable drill head bores a pilot hole along a predetermined path, guided by electronic tracking.

Reaming

The bore is then enlarged (reamed) to accommodate the utility being installed.

Pullback

Finally, the new pipe or conduit is pulled back through the bore path—all without disturbing the surface.

Utilities We Install via HDD

Sewer Lines

Including precise-grade gravity sewer installations

Electrical Conduit

High-voltage and distribution systems

Communications Conduit

Fiber optic, copper, and data infrastructure

Gas Lines

PG&E OQ-certified installations

Water Mains

Potable and reclaimed water systems

Advantages

Cost-Effective

Minimal surface disruption—no torn-up streets or parking lots. Dramatically reduced restoration costs compared to open trenching.

Precision Control

Precise depth, grade, and bore-path control ensures accurate installation every time.

Faster Timelines

Faster project timelines with less traffic and business disruption mean projects complete on schedule.

Environmentally Responsible

Reduced soil disturbance and erosion protects the environment and minimizes ecological impact.

Project Environments

We tackle the most challenging installation environments with proven expertise and precision.

Busy Intersections

Arterial roads and high-traffic areas

Commercial Properties

Limited access and active facilities

Critical Infrastructure

Railways, highways, and waterways

Sensitive Areas

Environmental protection zones

Ready to Start Your Project?

Contact us today to discuss how HDD can solve your infrastructure challenges.