Shannon & Wilson, Inc.

What Shannon & Wilson, Inc. does

Shannon & Wilson, Inc. is a Seattle-based geotechnical and environmental engineering consulting firm founded in 1954 by William L. Shannon and Stanley D. Wilson. The firm provides technical services spanning civil engineering, surface water, groundwater, geotechnical engineering, geology, and natural resources, organized into nine core service lines (Geotechnical Engineering, Contamination/Remediation, Geologic Hazards, Natural Resources, Water Resources, Design-Build, Tunneling/Underground, Arctic Engineering, and Construction Management) and seven specialty services (Asset Management, GIS/Database Management, Instrumentation, Laboratory, Pavement, Risk Management, and Thermal Engineering). Proprietary technical capabilities include specialized arctic/permafrost engineering, tunneling experience on more than 300 projects, comprehensive geotechnical instrumentation, and AASHTO-accredited in-house laboratory facilities for soil, concrete, asphalt, masonry, steel, and aggregate testing.

The firm serves government agencies (federal, state, and local), transportation departments, transit authorities, water utilities, municipalities, military installations, energy companies, and developers, with documented work for clients such as the US Navy, US Army Corps of Engineers, US Fish and Wildlife, Sound Transit, Oregon DOT, Ohio DOT, BNSF Railway, Alyeska Pipeline Service Company, the City of Seattle, and Metro de Panama. Revenue is generated through professional services fees billed on a project basis through competitive bidding for public-sector work and direct engagement for private clients, supported by 15 offices across the western and midwestern United States and field experience across 25 states and five countries.

Shannon & Wilson is 100% employee-owned and remains a private corporation with no parent company, external investment, or M&A history. It operates with 380+ employees and is led by President Gregory Fischer, supported by senior vice presidents covering Underground Services (Red Robinson), Earthquake Engineering (Bill Perkins), Railroad Services (Neal McCulloch), and regional offices. The firm reports over 65,000 completed projects since 1954, including landmark engagements on the Seattle First National Bank Building Tie Back Wall, Elliott Bay Seawall, Cleveland Innerbelt, Port Mann Bridge, and Panama Metro Line 2.

Name

Shannon & Wilson, Inc.

Legal name

Shannon & Wilson, Inc.

Website

https://shannonwilson.com

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

251–500 employees

Short description

Shannon & Wilson is a 100% employee-owned, Seattle-founded geotechnical and environmental engineering consulting firm serving federal, state, and local government agencies as well as private sector clients across transportation, water, federal, energy, and property development markets from 15 U.S. offices.

Ownership category

akta.pro rank

Product category

Geotechnical Engineering Consulting

NAICS

Engineering Services (54133), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

akta.pro secondary industries

Water, Wastewater & Stormwater Compliance (BPAHAJAJ), Phase II ESA & Subsurface Investigation (Soil/Groundwater Sampling) (EUAHAEAB), Brownfield Redevelopment Due Diligence & Grant Support (EUAHAEAD)

Keywords

• Geotechnical engineering
• Environmental consulting
• Civil engineering services
• Tunneling engineering
• Arctic engineering

Headquarters

HQ city

Seattle

HQ country

United States

HQ region

North America

Offices15 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Engineering Consulting Services: Shannon & Wilson generates revenue by providing geotechnical engineering, environmental consulting, and related professional engineering services on a project-by-project basis. Projects range from site investigations and assessments to full-scale design and construction observation services. Revenue is earned through professional service fees for engineering analysis, design recommendations, project management, and technical consulting.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Shannon & Wilson is a geotechnical and environmental engineering consulting firm providing site characterization, foundation design, subsurface exploration, slope stability and seismic hazard assessments, tunneling, arctic/permafrost engineering, environmental remediation, water resources, natural resources, and construction management services. The firm also operates AASHTO-accredited in-house soils and materials testing laboratories and offers specialized capabilities such as instrumentation, GIS, pavement design, risk management, and thermal engineering. Projects are delivered on a project-by-project basis through 15 offices across the United States.

Product overview

Shannon & Wilson, Inc. is a full-service geotechnical and environmental engineering firm founded in 1954, offering a comprehensive portfolio of professional engineering services rather than a software platform or product suite. The company's service offering is organized as a single integrated consulting practice with core service lines (Geotechnical Engineering, Contamination/Remediation, Geologic Hazards, Natural Resources, Water Resources, Design-Build, Tunneling/Underground Services, Arctic Engineering, and Construction Management) complemented by specialty services (Asset Management, GIS/Database Management, Instrumentation, Laboratory Services, Pavement Services, Risk Management, and Thermal Engineering). The firm serves diverse markets including transportation infrastructure (highways, ports, rail, transit), water resources (dams, levees, water supply), property development, industrial sectors, and federal clients across 15 office locations in the United States.

Differentiator

Problem solved

Functional benefit

Products and services

• Geotechnical Engineering Core engineering service providing site characterization, foundation recommendations, subsurface exploration, and geotechnical analysis for infrastructure projects including bridges, buildings, highways, and tunnels. For government agencies, transportation departments, municipalities, and private developers.
• Contamination / Remediation Environmental site assessment, hazardous waste investigation, remediation design, and cleanup services for contaminated soil and groundwater. For property owners, federal agencies, and industrial clients.
• Geologic Hazards Evaluation and mitigation of geologic hazards including landslides, rockfall, seismic hazards, and slope stability assessment for infrastructure and property owners.
• Natural Resources Environmental consulting for habitat restoration, wetland delineation, and ecological assessments supporting infrastructure projects for government and private clients.
• Water Resources Engineering services for water supply, wastewater, stormwater management, and hydraulic analysis supporting civil infrastructure for municipalities and water districts.
• Design-Build Integrated design and construction delivery method for geotechnical and environmental projects with fast-track schedules, offered to infrastructure and development clients.
• Tunneling / Underground Services Geotechnical engineering for tunnel design, trenchless construction, and underground infrastructure including microtunnels and horizontal directional drilling. For transportation, water, and utility clients.
• Arctic Engineering Specialized geotechnical services for permafrost conditions, cold regions infrastructure, and arctic construction projects in Alaska and northern climates. For federal, transportation, and energy clients in cold regions.
• Construction Management Construction observation, materials testing, quality assurance, and construction phase services for geotechnical and civil projects. For infrastructure owners, public agencies, and developers.
• Asset Management Risk-based asset management for transportation infrastructure including retaining walls, slopes, and geotechnical features. For DOTs and infrastructure owners.
• GIS / Database Management Geographic information systems and database management for geotechnical data, project documentation, and spatial analysis. For infrastructure and environmental clients.
• Instrumentation Geotechnical instrumentation installation and monitoring including inclinometers, piezometers, extensometers, and telemetry systems. For construction and infrastructure monitoring clients.
• Laboratory AASHTO-accredited soils and materials testing laboratory for geotechnical characterization and construction quality control. For infrastructure, construction, and development clients.
• Pavement Pavement design, evaluation, and rehabilitation recommendations for highways, airports, and industrial facilities. For transportation agencies and industrial operators.
• Risk Management Geotechnical risk assessment and risk management planning for complex infrastructure projects. For public agencies and large private developers.
• Thermal Engineering Thermal analysis and ground thermal management for permafrost protection and pipeline thermal design. For pipeline operators, arctic infrastructure, and energy clients.

Quantifiable outcome

• Successfully completed 65,000+ projects across 25 states and 5 countries since 1954
• +1 more outcomes

Named customers20 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• US Fish and Wildlife ServicestandardStrategic or Co-development PartnerShannon & Wilson performs geotechnical and environmental services for US Fish and Wildlife Service projects including Route 10 Jones Hole Road providing access to Jones Hole National Fish Hatchery.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• GeoEngineers: Geotechnical and environmental science consulting firm with comparable service portfolio (geotechnical engineering, tunneling, environmental services) and similar Pacific Northwest origin. Closest direct competitor in size, scope, and specialty.
• Kleinfelder: Engineering, scientific, and architectural consulting firm with strong geotechnical and environmental practice. Comparable in core offerings (site investigation, foundation design, construction observation) and federal/state DOT client base.
• Terracon: National geotechnical, environmental, construction materials, and facilities consulting firm. Direct competitor on transportation, federal, and water-resources projects across the United States, with strong in-house laboratory operations akin to Shannon & Wilson's AASHTO lab.
• Haley & Aldrich: Geotechnical and environmental engineering consulting firm focused on infrastructure and real estate development. Direct peer in site characterization, foundation engineering, and environmental site assessment, with comparable consulting-only business model.
• Geosyntec Consultants: Specialty geotechnical and environmental engineering and science consulting firm. Highly comparable specialty mix with focus on contaminated site assessment, remediation, and water-resources engineering for federal and private clients.

Broad incumbents

• AECOM: Global infrastructure consulting firm with full design and construction capabilities. Overlaps on geotechnical, tunneling, and environmental programs for transportation and water clients, particularly on large-scale megaprojects in the western U.S.
• Tetra Tech: Large-scale consulting and engineering firm with leading water, environment, and sustainable infrastructure practices. Competes for federal, water, and environmental contracts at a larger scale, including Phase II ESA and remediation work Shannon & Wilson performs.
• Stantec: Engineering, architecture, and environmental consulting firm with growing geotechnical practice, particularly in water and transportation infrastructure. Pursues state DOT and municipal contracts similar to Shannon & Wilson's portfolio.
• WSP: Global engineering professional services firm with significant transportation, environment, and tunneling practices acquired through M&A (e.g., Parsons Brinckerhoff). Competes for geotechnical scope on major DOT, transit, and water programs.

Emerging players

• Brown and Caldwell: Environmental engineering and science firm focused on water and wastewater infrastructure. Overlaps with Shannon & Wilson's water resources and environmental practices for municipal utility clients in the western United States.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/shanwil_inc
• YouTubeyoutube.com/channel/UCNGEFCLmytrrRy70w9jeZYA
• Facebookfacebook.com/shannonandwilson
• LinkedInlinkedin.com/company/shannon-&-wilson-inc-

Revenue estimate

Valuation estimate

Number of profiles

Profiles18 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 Shannon & Wilson, Inc.