Columbia Groundwork Inc. specializes in utility trenching for residential, commercial, and municipal projects. From power and water lines to storm drains and communications, we make sure your trenching is accurate, safe, and code-compliant.
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
Trenches for domestic water, stormwater systems, and sewer laterals, with proper bedding and backfill.
Communications & Data Conduit
Trenching 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.
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 us, 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
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.
Safety & Compliance
- 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
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
Service Area
Castle Rock, Longview, Kelso, Woodland, and Kalama, all of Cowlitz County.
Get a Free Utility Trenching Estimate
Ensure your utilities are installed right the first time. Call (360) 957-8847.
Get An Estimate