0 ft · Grade
Deep foundations and earth retention, built below grade.
DMI Drilling Construction is a specialty deep-foundation and excavation-support contractor working the Pacific Northwest since 1991 — drilled shafts, soldier-beam and tieback walls, soil nails and shotcrete, installed alongside the engineers who design them.
Since 1991 · 30+ years in the Pacific Northwest
- Est.1991Specialty drilling and foundation work in the Pacific Northwest.
- 30+30+ yearsDeep foundations, excavation support and earth retention.
- ACIACI-certifiedCertified nozzle personnel for shotcrete placement.
- PNWSumner, WABased in Pierce County, serving the greater Seattle area.
Capability
Four disciplines, from the surface down to competent soil
We self-perform each of these with our own fleet and crews, and bid and build them alongside your design team.
Excavation Support Systems
Temporary and permanent earth-retention systems that hold an open cut while the structure below goes in — including difficult-access sites other crews turn down.
- Soldier-beam retaining walls
- Tied-back anchor wall systems
- Soil nails
- Design/build services
- Difficult-access retaining structures
Drilled Shaft Foundations
Deep drilled-shaft and micropile foundations that carry structural load — and uplift — down to bearing, for towers, buildings and infrastructure.
- Cellular tower foundations
- Elevator shafts
- Transmission-line foundations
- Building foundations
- Uplift and tiedown anchors
- Micropile installations
Shoring and Stabilization
Shoring and slope stabilization for banks, waterfronts and remote sites, including repair and retention where the ground has already moved.
- Shoring systems
- Remote and difficult-access stabilization
- Waterfront protection
- High-bank retention
- Retaining walls
Soil Nail & Shotcrete
Soil-nail walls and shotcrete facing for cost-effective slope stabilization and earth retention, placed by certified crews.
- ACI-certified nozzle personnel
- Cost-effective soil stabilization
Everything that holds a structure up starts below the surface.
The engineer’s partner
A family-run specialty contractor that works closely with civil, structural and geotechnical engineers.
- Founded
- Sumner, WA · 1991
- Ownership
- Family-operated, the Morin family
- Fleet
- Large proprietary drilling fleet
- Approach
- Specialty installing techniques and tools
- First step
- Free site visit & project analysis
Representative work
The project types we are built for
A record of the work we take, drawn from our disciplines rather than a photo wall — the kinds of projects engineers and general contractors bring us.
Soldier-beam & tieback walls
Excavation support for open cuts beside existing structures.
Drilled soldier beams, tied-back anchors
Drilled-shaft foundations
Deep load transfer for buildings and elevator shafts.
Large-diameter drilled shafts
Cellular tower & transmission foundations
Uplift-resisting foundations for towers and power lines.
Drilled shafts, uplift and tiedown anchors
Soil-nail & shotcrete walls
Cost-effective slope stabilization and earth retention.
Soil nails, ACI-certified shotcrete facing
High-bank & waterfront stabilization
Retention and protection where the ground has moved.
Shoring systems, retaining walls
Micropile installations
Deep support on difficult-access and constrained sites.
Drilled micropiles
Get in touch
Free site visit and project analysis
Send us the project and we will come out, walk the site, and give you an accurate read on the foundation or earth-retention work it needs. Calls reach the people who do the work, not an answering service.
Request a site visit- Phone
- 253-891-1311
- After hours
- 206-793-4470
- info@dmidrilling.com
- Office
- 14211 16th St E, Unit 8, Sumner, WA 98390
- Service area
- Pacific Northwest · Seattle area