What Tri-State Drilling does

Tri-State Drilling is a privately held, family-owned specialty foundation drilling contractor founded in 1955 and headquartered in Plymouth, Minnesota. The company provides drilled foundations primarily for electrical transmission lines and utility infrastructure, operating as both a prime foundation contractor directly to investor-owned utilities (Eversource, Xcel Energy, Dominion Power, NYPA, Southern California Edison, Minnkota Power, and others) and as a preferred subcontractor to major transmission line construction firms (Michels, Par Electrical, L.E. Myers, Wilson Construction, M.J. Electric). Its geographic footprint spans 48 continental U.S. states and Alaska, with project scale ranging from a few hundred foundations up to multi-year mega-projects such as the 1,352-foundation, 250-mile Center to Grand Forks project for Minnkota Power (over $70MM total contract value).

The company's core technical capability centers on a large, specialized fleet of drilling equipment — including Watson drill rigs (co-developed with Watson Inc.), LoDrill, vibratory-hammer, cluster drill, down-hole hammer, and EMT 160 rigs — supported by in-house equipment design, manufacturing, modification, and repair. Service offerings are organized into two groups: a Transmission Group (drilled shafts, direct embedment foundations, helical micro-piles, guy anchors, utility grillage systems for transmission and utility lines) and a Specialty Group (helical piers, micropiles, driven H-piles, auger cast piles/CFA, rock drilling, sheet piling, tiebacks, soil nailing, contaminated soil remediation, and soil mixing/grouting for renewable energy, infrastructure, marine, heavy industry, agri-business, oil and gas, and commercial markets).

Tri-State generates revenue through project-based competitive bidding under fixed-price and unit-price contracts. Revenue streams include (1) prime foundation contracts with utilities, (2) subcontractor engagements on larger line construction projects, (3) specialty foundation services for renewable energy and industrial verticals, and (4) value engineering consulting where the company proposes alternative foundation methods (e.g., helical anchors) that reduce client cost and schedule. The firm has remained family-controlled across four founding families (Melcher, Riethmiller, Berthiaume, Eisele) with no institutional or private equity ownership identified, and currently operates with 51–100 employees under a next-generation executive team led by President Nick Ibach.

Name

Tri-State Drilling

Legal name

Tri-State Drilling, LLC

Website

https://tristatedrilling.com

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

51–100 employees

Short description

Tri-State Drilling is a family-owned specialty contractor, founded in 1955, providing drilled foundations for electrical transmission lines and renewable energy infrastructure across 48 U.S. states and Alaska, serving major utilities and line contractors with in-house drilling equipment design and execution.

Ownership category

akta.pro rank

Product category

Foundation Drilling Services

NAICS

Heavy and Civil Engineering Construction (237), Site Preparation Contractors (23891)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Tunneling & Underground Geotechnics (Ground Treatment, Support, NATM/SEM Interfaces) (IMAFAOAJ)

akta.pro secondary industry

Dewatering & Groundwater Control (Wellpoints, Deep Wells, Cutoff Systems) (IMAFAOAF)

Keywords

• Transmission line foundations
• Drilled pier foundations
• Helical pile installation
• Specialty foundation drilling
• Earth retention systems

Headquarters

HQ city

Plymouth

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Operations, Supply Chain, Technology or R&D

Revenue model

1. Foundation Drilling Services — Prime Contractor: Tri-State Drilling serves as a prime foundation contractor for major utilities (Eversource, Commonwealth Edison, Xcel Energy, Basin Electric, National Grid, Ottertail Power, Minnkota Power), providing drilled foundation installation for transmission lines. Revenue is earned through project-based contracts, typically with large total contract values (e.g., Center to Grand Forks project over $70MM).
2. Foundation Drilling Services — Subcontractor: Tri-State Drilling also operates as a preferred subcontractor for major line contractors including Michels, Irby, Par Electrical Contractors, Harlan Electric, Henkels & McCoy, L.E. Myers, M.J. Electric, 3-Phase Construction, IB-Abel, J.W. Didado, and others. Revenue is earned as a subcontractor on larger transmission line projects.
3. Specialty Foundation Services: Specialty deep foundation services for renewable energy, infrastructure, and industrial projects including helical piers, micropiles, drilled shafts, piling, and earth retention systems. Includes services for battery energy storage systems (BESS), solar farms, wind installations, marine construction, and contaminated soil remediation.
4. Value Engineering Consulting: Tri-State offers 'value engineering' proposals, suggesting alternative installation methods (e.g., helical anchors instead of originally specified methods) that save clients time and cost. This represents a consulting/advisory revenue aspect alongside execution.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Tri-State Drilling is a specialty foundation drilling contractor that designs and installs deep foundations for electrical transmission lines, utility lines, and renewable energy infrastructure. Services span drilled shafts, helical piers, micropiles, driven H-piles, auger cast piles, rock drilling, direct embedment, guy anchors, earth retention systems, and contaminated soil remediation, delivered as either a prime contractor to utilities or a preferred subcontractor to line construction companies.

Product overview

Tri-State Drilling is a provider of drilled foundations for electrical transmission lines and utility infrastructure, founded in 1955. The company operates two primary service groups: the Transmission Group, which provides foundation drilling for electrical transmission and utility lines (including direct embedment foundations, large diameter drilled pier foundations, helical micro-pile foundations, and guy anchor systems), and the Specialty Group, which offers deep foundation services for renewable energy, infrastructure, and industrial projects. The Specialty Group encompasses multiple foundation types (helical piers, micropiles, drilled piers, driven H-pile and pipe piles, auger cast piles, and rock drilling) and earth retention services (sheet piling, tieback and soil nail anchors, slope stabilization, contaminated soil remediation, and soil mixing and grouting). The company serves diverse markets including renewable energy (solar and wind), battery storage (BESS), power generation, infrastructure, oil and gas, heavy industry, commercial, marine, and agri-business sectors. Tri-State also provides in-house foundation engineering and design services.

Differentiator

Problem solved

Functional benefit

Products and services

• Transmission Group Services Foundation drilling services for electrical transmission lines and utility lines, including direct embedment foundations, large-diameter drilled pier foundations, helical micro-pile foundations, and guy anchor systems. Designed for investor-owned utilities, public power authorities, and electric cooperatives undertaking grid construction and modernization.
• Specialty Group Services Deep foundation services for renewable energy, infrastructure, and industrial projects including helical piers, micropiles, drilled shafts, piling, and earth retention systems. Covers solar, wind, BESS, marine, heavy industry, agri-business, oil and gas, and commercial applications.
• Helical Pier Foundations Helical pile foundations engineered with high-strength steel shafts and precision-crafted helical blades configured to site-specific conditions. Installed using torque-monitored equipment to deliver superior stability and verifiable load capacity for transmission, utility, and renewable energy structures.
• Micropile Foundations Small-diameter, high-capacity deep foundation solutions suitable for challenging soil conditions and restricted access areas. Used for sensitive retrofits, brownfield redevelopment, and locations with limited overhead clearance.
• Drilled Pier Foundations High-capacity drilled shaft foundations (caissons) designed for ultimate strength and reliability for buildings, bridges, and towers. Variable-diameter (24-240 inches) capability with non-destructive testing for concrete quality (Mini-SID, down-hole cameras).
• Driven H-Pile & Pipe Pile Solutions Robust driven pile solutions using diesel, hydraulic impact, and vibratory hammers to drive H-piles and pipe piles to specified depth and resistance. Delivers support and stability for heavy infrastructure and industrial loads.
• Auger Cast Piles (CFA) Continuous flight auger (CFA) piles installed using hollow stem augers and grout pumps to create cast-in-place piles for maximum stability and strength. Achieves depths exceeding 80 feet and diameters from 12 to 36 inches, with full quality management and per-pile logging.
• Rock Drilling Expert rock drilling using precision drilling, controlled blasting, rotary and percussive drilling, and down-the-hole (DTH) techniques for foundation support in dense bedrock and complex rock formations (up to 58,000 psi demonstrated on the Middletown-Norwalk project).
• Direct Embedment Foundations Direct embedment foundation services for transmission and utility line structures, allowing poles to be set directly into drilled holes — used extensively on projects such as Smart Path Connect (530 direct embeds).
• Guy Anchor Systems Anchor systems designed to provide lateral and tensile support for guy wires on transmission and utility structures.
• Sheet Piling Sheet piling services for soil retention and groundwater control in challenging environments, providing excavation support, waterfront structures, cofferdams, and flood protection.
• Tieback and Soil Nail Anchors Soil stabilization and earth retention systems using grouted steel bars (soil nails) and steel anchors for slope stabilization, excavation support, and retaining wall repair.
• Contaminated Soil Remediation

Quantifiable outcome

• Center to Grand Forks project: 1,352 foundations, 250 miles, over $70MM contract value — completed February 2014
• +4 more outcomes

Named customers17 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Nine partnerships are on record, tiered core and strategic.

• ADSC – The International Association of Foundation DrillingcoreStrategic or Co-development PartnerTri-State Drilling has been a long-standing member of ADSC – The International Association of Foundation Drilling. ADSC provides networking opportunities and technical and administrative assistance on industry issues including safety. Tri-State was one of the few ADSC Contractor Members in the upper Midwest. Jim Melcher served as President of ADSC from 2000 to 2001. Tri-State has been featured in ADSC publications, and Barry Morris (Director of EHST) contributed an article to ADSC on recognizing safety hazards while drilling.
• Xcel EnergycoreOthersTri-State has completed multiple projects as prime foundation contractor for Xcel Energy, including the CAPX2020 La Crosse and Rochester to Hampton transmission lines. Xcel Energy is one of Tri-State's key utility clients.
• Par Electrical ContractorscoreOthersTri-State served as subcontractor to Par Electrical Contractors on the Middletown-Norwalk project (Connecticut), installing 610 foundations for 45 miles of 345-kV transmission line.
• Wilson Construction CompanycoreOthersTri-State served as subcontractor to Wilson Construction Company on the Tehachapi Renewable Transmission Project (Segments 7 & 8, Los Angeles & San Bernardino Counties, CA), installing 1,030 foundations for a 250-mile transmission line.
• The L.E. Myers CompanycoreOthersTri-State served as subcontractor to The L.E. Myers Company on the Meadowbrook-Loudoun project (Dominion Power, 65-mile 500-kV transmission line in Virginia), installing 1,960 foundations.
• MJ ElectriccoreOthersTri-State served as subcontractor to MJ Electric on the Arrowhead-Weston project (Wisconsin Public Service), a 220-mile transmission line connecting Duluth, MN with Wausau, WI, with 1,564 structures.
• Watson Inc.strategicTechnology or IntegrationTri-State developed a strong working relationship with Watson Inc. regarding equipment capabilities. Wayne Riethmiller worked with Jack Watson to design and build the first Watson 3000 drill rig based on Tri-State's specific requirements for mobility and minimal set-up time. The two companies provided mutual technical support and business development during the evolution of the foundation drilling industry.
• New York Power Authority (NYPA)coreOthersNYPA oversees the Smart Path Connect project, one of the largest New York infrastructure projects in over 40 years. Tri-State is constructing 159 drilled shafts and 530 direct embeds as part of rebuilding two 55-mile circuits of 345KV transmission line in Northern New York.
• Minnkota PowercoreOthersTri-State served as prime foundation contractor for the Center to Grand Forks project — the largest transmission project in Tri-State's history — with a total contract value over $70MM, 1,352 foundations spanning 250 miles.

Scale indicators11 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Condon-Johnson & Associates: West Coast-headquartered geotechnical foundation contractor specializing in drilled shafts, driven piles, micropiles, and ground improvement. Competes with Tri-State in deep foundation drilling for heavy civil and infrastructure projects.
• Berkel & Company Contractors: Specialty geotechnical foundation contractor focused on drilled shafts, auger cast piles, micropiles, and earth retention. Comparable to Tri-State's Specialty Group offerings for infrastructure and industrial clients.
• Richard Goettle, Inc. Drilled shaft, micropile, helical pile, and earth retention contractor serving infrastructure, utility, and industrial clients. Comparable to Tri-State in offering a full suite of deep foundation and ground improvement methods.
• Schnabel Foundation Company: Specialty foundation and earth retention contractor offering drilled shafts, micropiles, anchors, and ground improvement. Directly comparable to Tri-State's mix of deep foundations, anchors, and earth retention for infrastructure clients.
• Subsurface Construction Company: Midwestern specialty foundation contractor specializing in drilled shafts, caissons, auger cast piles, and earth retention for infrastructure, utility, and commercial projects — directly overlapping Tri-State's Specialty Group services and regional footprint.
• Malcolm Drilling Company: One of the largest U.S. specialty deep foundation and shoring contractors, performing drilled shafts, anchors, and micropiles for major infrastructure. Closely comparable to Tri-State's deep foundation drilling portfolio across heavy civil and energy markets.
• Foundation Constructors, Inc. Specialty deep foundation contractor performing drilled shafts, driven piles, auger cast piles, and earth retention across the western U.S. Closely matches Tri-State's drilled shaft and deep foundation execution model for heavy civil work.

Broad incumbents

• Hayward Baker (Keller Group): North America's largest geotechnical specialty contractor (now part of Keller Group), offering ground improvement, deep foundations, and earth retention across virtually every heavy civil end market. Overlaps with Tri-State's deep foundation work as a much broader, public-company-owned incumbent.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/tristatedrillingllcmn
• LinkedInlinkedin.com/company/tri-state-drilling-inc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tri-State Drilling