Our Utility Trenching Services
Electrical & Power Line Trenching
We excavate to required depths and install conduits for residential, commercial, and industrial power systems.
Water & Sewer Line Trenching
Our crews prepare trenches for domestic water, stormwater systems, and sewer laterals — all with proper bedding and backfill.
Communications & Data Conduit
We trench for fiber optic, cable, and telecom lines with precision and minimal disruption.
Stormwater & Drainage Systems
From culverts to storm drain connections, we dig and set trenches that protect your property from flooding.
Frequently Asked Questions
How deep should utility trenches be?
Depth depends on utility type — typically 18–24 inches for communications, 24–36 inches for electrical, and deeper for water/sewer. Local codes dictate exact depths.
Do you handle permits?
Yes. We coordinate with city and county offices to ensure trenching complies with regulations and is ready for inspection.
Can you trench on developed properties?
Yes. We can trench in yards, driveways, and roadways with minimal disruption, restoring surfaces after installation.
Why Choose Columbia Groundwork?
Experienced crews with modern excavation equipment
Knowledge of local soil and permitting requirements
Safety-focused trenching practices
Reliable scheduling for contractors and homeowners
Utility Trenching Services in Southwest Washington
Columbia Groundwork Inc. specializes in utility trenching for residential, commercial, and municipal projects. From power and water lines to storm drains and communications, our team ensures your trenching is accurate, safe, and code-compliant.
Why Utility Trenching Matters
Underground utilities are the backbone of any property. Poorly planned or installed trenches can lead to costly repairs, safety hazards, and failed inspections. With Columbia Groundwork, you get precise trenching that meets engineering specs and local regulations.
Safe, efficient trench excavation
Proper depth and slope for code compliance
Protection for pipes, conduits, and cables
Backfill and compaction for long-term stability
Safety & Compliance
Utility trenching requires strict attention to OSHA standards and Washington State safety codes. Columbia Groundwork maintains:
Trench safety with shoring and shielding when needed
Proper slope and benching for worker protection
Locating and marking of existing utilities before excavation
Coordination with inspectors and engineers
Service Area
We provide trenching services across:
Cowlitz County: Castle Rock, Longview, Kelso, Woodland, Kalama
Clark County: Ridgefield, La Center, Vancouver area
Lewis County: Toledo, Winlock, Chehalis, Centralia
Get a Free Utility Trenching Estimate
Ensure your utilities are installed right the first time. Contact Columbia Groundwork Inc. today for a no-obligation trenching estimate.
